Silicon Motion Technology Corporation (NASDAQ:SIMO) Q1 2019 Results Earnings Conference Call May 3, 2019 8:00 AM ET

Company Participants

Chris Chaney - Director of Investor Relations and Strategy
Wallace Kou - President and Chief Executive Officer
Riyadh Lai - Chief Financial Officer

Conference Call Participants

Karl Ackerman - Cowen & Co
Craig Ellis - B. Riley & Co., LLC
Anthony Stoss - Craig-Hallum Capital Group LLC
Mehdi Hosseini - Susquehanna Financial Group
Ari Shusterman - Needham & Company, LLC
Donnie Teng - Nomura International Limited
Charlie Chan - Morgan Stanley Research
Suji Desilva - ROTH Capital Partners
Gokul Hariharan - J.P. Morgan

Operator

Ladies and gentlemen, thank you for standing by and welcome to the Silicon Motion Technology Corporation First Quarter 2019 Earnings Conference Call. At this time, all participants are in a listen-only mode.

This conference call contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934 as amended.

Such forward-looking statements include, without limitation, statements regarding trends in the semiconductor industry and our future results of operations, financial condition and business prospects. Although such statements are based on our own information and information from other sources we believe to be reliable, you should not place undue reliance on them.

These statements involve risks and uncertainties and actual market trends and our results may differ materially from those expressed or implied in these forward-looking statements for a variety of reasons. Potential risks and uncertainties include, but are not limited to, continued competitive pressure in the semiconductor industry and the effect of such pressure on prices; unpredictable changes in technology and consumer demand for multimedia consumer electronics; the state of and any change in our relationship with our major customers; and changes in political, economic, legal and social conditions in Taiwan.

For additional discussion of these risks and uncertainties and other factors, please see the documents we file from time to time with the Securities and Exchange Commission. We assume no obligation to update any forward-looking statements, which apply only as of the date of this conference call.

[Operator Instructions]

I must advise that this conference is being recorded today Friday, 3rd of May, 2019.

And I would like to hand the conference over to your first speaker today, Mr. Chris Chaney, Director of Investor Relations and Strategy. Thank you. Please go ahead, sir.

Chris Chaney

Thank you, Amber. Good morning, everyone, and welcome to Silicon Motion’s first quarter 2019 financial results conference call and webcast.

My name is Chris Chaney, Director of Investor Relations. With me here is Wallace Kou, our President and CEO; and Riyadh Lai, our Chief Financial Officer.

Following my comments, Wallace will give a review of our key business developments and then Riyadh will discuss our first quarter results and our outlook. We’ll then conclude with a question-and-answer period.

Before we get started, I’d like to remind you of our Safe Harbor policy, which was read at the start of this call. For a comprehensive overview of the risks involved in investing in our securities, please refer to our filings with the US SEC.

For more details on our financial results, please refer to our press release, which was filed on Form 6-K after the close of market yesterday. This webcast will be available for replay on our website at www.siliconmotion.com for a limited time.

To enhance investors' understanding of our ongoing economic performance, we will discuss non-GAAP information during this call. We use non-GAAP financial measures internally to evaluate and manage our operations. We have, therefore, chosen to provide this information to enable you to perform comparisons of our operating results in a manner similar to how we analyze our own operating results. The reconciliation of the GAAP to non-GAAP financial data can be found in our earnings release issued yesterday. We ask that you review it in conjunction with this call.

With that, I will now turn the call over to Wallace.

Wallace Kou

Thank you, Chris. Hello, everyone, and thank you for joining us today. I will first update you on our business and then Riyadh will review our financials and provide outlook later on this call.

For the first quarter, our sales from continuing operation of $89million declined 23% sequentially. Including FCI, our sales were $95 million and had also declined 23% sequentially. Earnings per ADS for the quarter were $0.42.

Let me start with an update of our SSD controller. This quarter, our SSD controller sales were flat sequentially, in line with what we had communicated to you three months ago.

As previously discussed, while NAND prices have been falling sharply, which triggered an increase in demand for SSD. The reaction is not immediate, especially with OEM where design qualification and testing processes will be extensive.

Separately, when NAND prices are falling sharply, module makers face increased financial risk and so become more conservative in procuring NAND flash components and related controllers.

This situation is now changing. Procurement of controllers for our NAND Flash customers is beginning to step up as SSD for new OEM programs are starting to move into productions.

Also, procurement of controller for our module maker customer is increasing as they are now receiving NAND Flash from their supplier at more attractive terms, which is leading to a rebound in their business activity.

As we have been saying, ever since NAND supply and demand dynamic has started shifting from shortage to surplus and NAND pricing has reverted to its long-term declining trend, our business now biased [ph] toward growth, with the benefit of price elasticity of demand.

Approximately 250 million client hard disk drives are still shipping annually. And over the next few years, as NAND prices fall further, most of these client HDD will be replaced by SSD.

Our pipeline of SSD controller projects with our NAND partners expanded further this quarter. More and more importantly, interest in building SSD, especially for OEM applications and the interest in adopting more of our controller in this project from customer has increased meaningfully in recent months.

Based on current design activity, we believe our market share at all the leading PC OEM will expand meaningfully by the end of this year.

We're excited that our SSD controller order momentum has started to pick up with both NAND flash and module maker customers. In the second quarter, we expect our SSD controller sales to grow approximately 25% quarter-over-quarter.

While visibility for the balance of the year remains limited, we are expanding pipeline of SSD controller design wins, especially for SSD design for PC OEM, strongly positioning us for further growth.

Let me, however, caution that, while our near-term business momentum has improved, our sales visibility into the second half year remains limited. While many of our business partners are expecting NAND prices to be stabilized far more moderately in the second half of the year, end demand remains lackluster.

NAND Flash makers continue to hold elevated level of inventory. NAND prices remain volatile and our customer could change business direction quickly. Our order book for the second half remains unclear and the rapidly changing market conditions could affect our business, both positively and negatively.

Our enterprise-grade SSD controller remains on track to begin commercial production in the middle of the year. Commercial shipment of our enterprise SSD controller embedding our Shannon Open Channel NVMe SSD. I expect it to begin midyear.

Additionally, in the second half of this year, we are also expecting to begin initial low-volume sale of our enterprise SSD controller to our few US customers.

Turning into our eMMC plus UFS controllers, sales this quarter were down about 45% sequentially. Our eMMC and UFS controllers have high exposure to the China market.

According to the China Academy of Information and Communication Technology data, first quarter mobile phones shipment volume in China were down 30% quarter-over-quarter. Our large eMMC NAND Flash customer recently talk about their eMCP sales declining 32% in the first quarter, which is in line with the Chinese data.

Additionally, our NAND Flash customer may have exited 2018 with slightly higher controller inventory, which were consumed in the first quarter.

Based on our current order book, our eMMC plus UFS controller sales growth should be roughly flat in the second quarter. Looking into the second half of this year, we are expecting strong eMMC embedded memory build activity by Chinese module maker and strong UFS embedded memory sales by our NAND Flash customer.

We have very clear market share leadership with module maker in China for eMMC. Our module maker customer, who have been actively supporting for quite some time, have improved sourcing of NAND Flash components, specifically for building eMMC and have made good progress.

Securing design win in Chinese smartphone OEM, we believe our UFS controller sales will grow further in the second half of the year once our upgraded, higher performance UFS 2.1 controller enter production.

Now, let me discuss our SSD solution sales. In the first quarter, sales of our SSD solution fell about 40% sequentially, with both our Shannon and Ferri sales declining.

Our Ferri product declined as expected. Our Shannon product declined worse than expected as China's economy continued to soften and Internet company reduced their operation and CapEx plan. As many of you know, several leading Chinese Internet companies, including Tencent, JD.com and DiDi recently announced large layoffs.

Our Shannon customers have been reducing SSD procurement plans.

Our Open Channel SSD for both Alibaba and another BAT customer are expected to complete testing around the middle of this year and enter production in the third quarter.

For full-year 2019, we believe our SSD solution sale could fall over 10% this year due to China's softened economy and corresponding impact to its Internet ecosystems.

2019 remains a challenging year for us. Nevertheless, we feel better about our SSD controller growth outlook with strong near-term momentum and improving feedback from customers for the balance of the year.

We also feel better about our Chinese module maker customers entering into eMMC market with smartphone, further growth of our UFS controller in the second half of the year and our Open Channel SSD project for the BAT continuing to track to a midyear commercial production.

On the other hand, we are feeling less confident about SSD solutions upside opportunity this year given MICO issue in China.

Now, let me turn the call over to Riyadh to discuss our financial performance and more about outlook.

Riyadh Lai

Thank you, Wallace. And hello, everyone. I will summarize our financial results and then provide our outlook.

Before I begin, I would like to reiterate that our comments today will focus primarily on non-GAAP results unless otherwise specifically noted. Please note that our non-GAAP excludes FCI, excluded to provide transparency to the performance of our continuing operations. A reconciliation of our GAAP to non-GAAP data is included with the earnings release issued yesterday.

In Q1, revenue declined 23% sequentially. Results for our three key products are as follows. SSD controller sales were flat sequentially, and I would like to highlight that SSD controllers are now 55% of our total net sales. eMMC plus UFS controller sales declined about 45% and SSD solutions declined about 40%.

Gross margins in Q1 were flat sequentially at 50.2%. Gross margins were flat because margin upside from our higher sales mix of higher gross margin controllers were offset by meaningful decreases in gross margins for our SSD solutions and non-storage products. Controller gross margins were stable quarter-over-quarter.

Operating expenses in Q1 rose significantly to $28.6 million from $27.5 million in the previous quarter due primarily to higher R&D spending expenditures.

Operating margin in Q1 declined to 18% from 26.5% in the previous quarter due to declining sales and higher operating expenses.

Our effective tax rate in Q1 was 14% compared to 8% due to one-off tax benefits in the previous quarter.

Earnings per ADS in Q1 declined to $0.42 from $0.82 in the previous quarter. Stock-based compensation in our operating expenses, which we exclude from our non-GAAP results, were $4.1 million in Q1 compared to $11.9 million in the prior quarter due to seasonal timing of RSU awards.

We had $281 million of cash, cash equivalents, and short-term investments at the end of Q1, down $8 million from the prior quarter.

Cash flow from operations generated $13.3 million in Q1. This quarter, we had over $1 million of CapEx, primarily for routine purchases of software and design tools.

In late February, we paid $11 million of dividends to shareholders, the second $0.30 per ADS quarterly installment of our annual $1.20 per ADS dividend that was announced in October of last year. We did not repurchase any shares this quarter due to limited business visibility for the full year.

Now, let me turn to our Q2 and full-year 2019 outlook. In Q2, we expect revenue to increase 10% to 20% sequentially, driven by our SSD controllers. As discussed by Wallace, we continue to have limited sales visibility for the second half of this year. And until we see more concrete procurement forecast from customers, we do not believe it is appropriate to provide false precision implied by a quantified guidance. Until we have better business visibility, we believe that it is likely that full-year revenue could be approximately similar to last year.

Let me provide color on our key products. In Q2, we expect our SSD controller sales to grow roughly 25% sequentially. While we do not have clear order visibility for the second half of this year, we nevertheless believe it is more than likely that our SSD controller sales would continue growing strongly through the balance of the year.

We expect eMMC plus UFS controller sales growth to be roughly flat in Q2. In the second half of this year, we are expecting growth from both our China module maker eMMC sales and our flash customers' UFS sales. Our legacy Hynix eMMC programs could continue at the current level for the balance of the year.

We expect our SSD solutions sales growth to be flat in Q2 and grow in the second half as our Shannon Open Channel SSD solutions enter commercial production. For full-year 2019, we believe that our SSD solution sales could fall over 10%.

Q2 gross margin is expected to be between 48.5% and 50.5%. While our mix of higher gross margin controller sales will increase in Q2, we are expecting our controller gross margins to temporarily decline as we share some of our long-term strategic partners' current financial pain.

For the full year, if our product mix remains the same as 2018, our gross margins should remain unchanged year-over-year. Since our business is dynamic, it is likely that our product mix will change each quarter.

Q2 operating margin is expected to be between 18.6% to 21.6%. We expect Q2 operating expense to be roughly similar to the previous quarter. For the full year, we expect operating margin to remain the same as 2018 if gross margins were to remain unchanged year-over-year. We expect to continue to tightly managing operating expenses this year.

Stock-based compensation in Q2 is expected to be in the range of $0.4 million to $0.5 million and, for the full year, to be slightly less than 2018.

Tax rate in Q2 is expected to be approximately 15% and for the full year to be approximately 15%, our model tax rate.

This concludes our prepared remarks. We will now open the call to your questions.

Question-and-Answer Session

Operator

Thank you. [Operator Instructions]. Your first question comes from the line of Karl Ackerman from Cowen. Please go ahead.

Karl Ackerman

Hi. Good afternoon, everyone. Can you hear me?

Wallace Kou

Yes.

Karl Ackerman

Great. Riyadh or Wallace, if I could just go back to your full-year outlook, it doesn't seem to imply a fairly sizable ramp in the second half of 2019. You indicated how both revenue and margins would be, of course, relatively similar on a year-over-year basis assuming no product mix change, albeit you just mentioned that product mix will change on a quarterly basis from here. So, I guess, I think one of the biggest variables that impacts perhaps your overall outlook is the Open Channel and customer SSD business. So, perhaps, you could elaborate on the visibility you have with your both customer SSD and Open Channel controller opportunities to the BAT providers, not just in the June quarter, but also the trajectory in the second half given fairly depressed levels today. And, I guess, what gives you confidence that that segment's growth [indiscernible] in second half of 2019? How do we think about the progress and qualification of that program? Thank you.

Wallace Kou

So, we are working closely with two of our BAT customers in China – we have been working together for almost more than one year. The progress needed a tremendous effort from both parties and the hyperscalers need to also a tremendous software development in their side. We have a tremendous software development to fine tune for different business model and the workload, and we are on track. Currently, it's in the final stage of qualification in the real workload and we believe that will be done by end of the June or mid of June and product will be moving to production by beginning of third quarter. So, that confidence we have is all the – I think the deal is in our hand, but we have to qualify the final stage of the real workload test in their real server systems.

Karl Ackerman

Got it. That's helpful. I guess, just on my follow-up, if I may, on your mobile business, I know you're in a period of transition from growing as a US-based customer while also continuing to service your Korean customers' legacy tech nodes. At the same time, two other issues appear to be playing from the segment with their high levels of controller inventory across channel handset supply chain and perhaps the second being that Samsung wants to aggressively attack the mobile market in the second half. Given many of these moving parts, how do we think about the linearity of the smartphone controller business for the balance of 2019? Thank you.

Wallace Kou

So, let me try to answer this. Today, for smartphone, from high end to some of the mainstream, we're transitioning from eMMC to UFS. So, that portion, UFS, we're going to grow and depend on one of the major partner from NAND makers. And we believe they are already showing the momentum in last year. Now, they are, in fact, moving for UFS 2.1. That portion, we feel very comfortable.

Regarding eMMC, s eMMC is going to stay in the value line of a smartphone, also a portion of the mainstream. And it could be in China and also in India. That portion, I think we have our old partner from Korea because they are transitioning majority portion into UFS. So, that portion, I think, we were down compared to last year. However, this year, it's quite stable. However, we see great momentum regarding from China module maker, probably around six to seven customers. They are ramping now quickly for the low-end smartphone, as well as for set-top box. That portion will create great momentum for us to grow eMMC, especially from second half of this year. That's also in Huawei and Xiaomi smartphone. So, we feel very comfortable to grow with China module maker for eMMC and grow UFS with one of the NAND maker for second half this year.

Karl Ackerman

Thank you.

Operator

Thank you. Your next question comes from the line of Craig Ellis from B. Riley FBR. Please go ahead.

Craig Ellis

Yes. Thanks for taking the question. And Wallace and Riyadh, good afternoon and it's very nice to be back in touch again.

My first question was related to the SSD controller business. You were clear on outlook dynamics for the second quarter and some of the limited visibility that exists for the second half, but can you help us understand, in the second quarter, the degree to which you'd expect the OEM business to perform versus the module maker business? Do you expect them to grow equally or one materially faster than the other?

Wallace Kou

So, regarding the SSD controller rebound in the second quarter, we feel very comfortable with the high confidence we're going to have a strong rebound, about 25% or so revenue growing second quarter. The main reason, because our major project in PC OEMs start to ramp, but also the module maker, from most of it in China and Taiwan, because the NAND price is relatively stable in the second quarter, they start to procure much more NAND from NAND maker.

Since NAND is still staying in the excess inventory, demand is much bigger than – supply much bigger than demand. So, we take advantage of the NAND maker that wants to sell through their excess inventory. Because we are in a leading position, provide all the different solution for customer, that's why the demand for our side become much higher. Frankly speaking, we don't have enough resource to support all the project we can have, we can get today.

But we believe, in the second quarter, those module makers, OEM all grow. I cannot say equally 50-50 or 55-45, but both grow much stronger than first quarter.

Craig Ellis

That's helpful. And then, two follow-ups to that. First, regarding last statement about the demand that your customers are placing on you for help with the work that you have, do you expect to improve your position to meet demand in the back half of the year?

And somewhat related to that, with respect to the opportunity to convert 250 million client HDDs to NAND, how much progress do you think industry will make on that opportunity in this year? And what do you think is possible next year given where NAND flash prices are relative to HDDs now?

Wallace Kou

In our view, PC OEM really aggressively tried to replace the HDD with the SSD. I think on commercial lines, almost 80%, 90% already is SSD, but consumer line, because they have a lot of dual drives, so a lot of the consumer line with dual drive, they will keep at least one HDD and one SDD. But we also see some desktop will start to replace HDD with SSD. So, when the NAND price fall deeply deeply even 2020, we see QLC NAND really become more important. I think, from 2020, almost all NAND maker is going to offer 96-layer QLC that is going to trigger another price decline, price drop for the SSD. We believe there will be a good momentum for – we'll see the SSD moving.

For portable SSD, it's very interesting. We just start to see the momentum and a lot of customers talk about looking for solutions to replace external HDD. That portion is around 150 million units today and I think they will be taking another three to five years to replace external HDD.

And when the majority will require QLC and majority need at least a 4 terabyte for external solution, that will also help NAND maker to really allocate their excess NAND inventory for external solutions. I think that will be the momentum for the next few years to focus on and that could be a great growth potential for us to sell our controllers to NAND makers as well as to module makers.

Riyadh Lai

Craig, let me also add, when you look at client hard disk drives, they are generally in three segments, the computing segment, consumer electronics, and external storage. In the PC segment, the conversion to SSD is already pretty meaningful, but the conversion to SSDs in consumer electronics and external storage are still very low. So, we expect a lot of the replacement of hard disk drives to be happening on these two other segments, consumer electronics and external storage over the next few years.

So, when you look at our conversion by capacity on the hard disk drive side, over the last few years, it's been one capacity category SSD after another becoming cheaper than hard disk drives. First, the 128 gigabyte SSDs, then the 256 gigabyte SSDs, and today the OEM price of a 512 gigabyte SSD is already quite comparable to the price of hard disk drive.

So, even very soon, 1 terabyte SSD could be as cheap as a hard disk drive. And already, for consumers, you can go to Amazon.com and buy 1 terabyte SSDs for about $100 or a little bit more than that. And we're talking about retail price.

So, the market for SSDs will continue to grow rapidly and the pace of its growth will be largely dependent on how fast NAND prices continue to come down and at what rate hard disk drives continue to be replaced.

Craig Ellis

That's a very helpful color. And if I could ask one more, I would just inquire about the OpEx as we look through the year. My sense is that, as you presented the financial results pro forma without FCI, that all of the operating expense relative to that business is out of the forward-looking model. But is there any efficiency enhancement or optimization that would come either in the second quarter or in the back half of the year related to that divestiture? Thank you, gentlemen.

Riyadh Lai

Yes, for our divestiture of FCI, the operating expense of FCI runs roughly $4 million to $4.5 million quarterly per quarter. In Q1, it was a little higher than the normal because of project expenses and other R&D expenditures. But, on a normalized quarterly basis, our FCI operating expense is about $4 million to $4.5 million. So, once this deal is done and we expect the deal to be closed in the second quarter, we will be running our business without that. And so, the benefit would be coming through from higher operating margin, as well as improvements in our EPS.

Craig Ellis

Thank you.

Operator

Thank you. Your next question comes from the line of Anthony Stoss from Craig-Hallum. Please go ahead.

Anthony Stoss

Hi, guys. A couple of questions, Riyadh, namely your full-year guide to be approximately the same as the $530 million you did in 2018. Are you assuming nothing from FCI or just the six months that it's going to be under your wing in terms of that view of $530 million?

And then also, I'd love to hear a little bit more on the SSD and the client side design wins perhaps for the second half of the year, a percentage basis more than you had in the second half of 2018?

And then, my last question would be, you made mention of shipping embedded SSDs to a handful of US customers, low volume later on this year. Can you expand upon what the opportunity might be with US customers in 2020? Thanks.

Riyadh Lai

Let me start with the first question and turn it over to Wallace for the two other questions. In terms of our non-GAAP revenue for this year, and we're talking about – that despite our limited sales visibility for the second half of the year, until we have better visibility, it is reasonably likely that our full-year revenue could be approximately the same as last year. And we are looking at – when we're talking about this, we are talking about in apples-to-apples basis. So, this year was without FCI being our non-GAAP revenue; and for last year, we'll be also excluding our FCI revenue.

Wallace Kou

Okay. Regarding SSD business, I think, from client side, we are experiencing tremendous demand from customers right now, from both NAND partner as well as some module makers. We also have some direct requirements from PC OEMs. So, we have a pretty confident in overall client SSD development, also market trend and our product position.

Regarding we managing our enterprise SSD controller, we are going to ship low volume to a few US customers, that is correct. We cannot really name the customer because we are very confident – they've been working for almost more than one year and we know exactly what they're looking for. But they're going to try different type of storage application and we're definitely looking forward to grow the business in 2020 in both US and China markets.

Anthony Stoss

Wallace, do you think that the US opportunity is material to Silicon Motion?

Wallace Kou

I believe so. We're definitely looking for the long term in our strategy. That's why product focus have a full product roadmap to enter enterprise SSD controller business.

Anthony Stoss

And if I could just throw in one more question – also more general for you, Wallace – have you seen any material changes in your ASPs on the SSD side or any material changes in competition? I know you had highlighted you expect to actually grow share on the SSD client side. Thank you.

Wallace Kou

It's a very good question. As you know, when NAND price declined sharply, a lot of our module maker, they cannot make profit. And that's why they also become very angry if we cannot really share the pain. So, from time to time, we need to reduce our price, our ASP.

But from product mix, because new high-end products are coming, that's why we have pretty good confidence to maintain our ASP because more PCIe, also we can offer PCIe Gen 4 by end of this year. And so, more high-end product coming and we also reduce some of our ASP for low-end SATA product line. That will help to share the pain for our customers. But, overall, we think we can maintain the gross margin, maintain the ASP.

Anthony Stoss

Great. Thank you.

Operator

Thank you. Your next question comes from the line of Mehdi Hosseini from SIG. Please go ahead.

Mehdi Hosseini

Yes. Thanks for taking my question. A couple of follow-ups. Riyadh, did you say that the year-end guide that you provided excludes the divestitures?

Riyadh Lai

Our full-year revenue for our non-GAAP excludes FCI. And so, when we compare that to last year, we're also looking at it on an apples-to-apples basis, so excluding FCI. So, you can see that in our financials. As part of our 6-K earnings release, we provide our GAAP numbers as well as our non-GAAP and the reconciliation for that. There you can see how we exclude FCI for both Q1 and also the prior quarters.

Mehdi Hosseini

Sure. And then, a couple of follow-ups for Wallace. Given your rather more constructive outlook for the second half, especially for SSD solution and including Open Channel, when would you start procuring NAND, especially if you think NAND prices are going to go sideways in the second half? At what point in Q2 would you take advantage of opportunity and for Q4 your own product shipment in the second half?

Wallace Kou

Yeah. For Shannon business – so for BAT project, our procurement goes through one of SSD manufacture partner. This is one of the largest manufacture partner in the world. So, they would procure the NAND and manufacture for us. For non-BAT customer, we will procure ourselves. So, every quarter, we procure NAND from the selected NAND partner.

Mehdi Hosseini

So, in that context, would you wait till like June to take advantage of prices before they stabilize or have you already started doing?

Wallace Kou

No, we gave out the rolling forecast. Every month, we have rolling – six-month rolling forecast to our manufacture partner. The price negotiation – every three months, we have a price negotiation for the NAND price.

Riyadh Lai

So, Mehdi, to put it another way, we don't speculate – the way we manage our business is not to speculate on NAND prices going up or going down. It's more we're buying for the businesses that we have a quarter in advance.

Mehdi Hosseini

Sure, sure. Just that over the past year-and-a-half, or rather two years, due to declining NAND prices, we were speculating demand elasticity and that hasn't happened. So, how is it different now?

Wallace Kou

No. I think, in the past, the Shannon business – because it's small, it's very dynamic. Sometimes, our Shannon operation procurement make mistake. So, we have some inventory cannot sell-through. That's why they hurt our overall gross margin. And now, we believe this arrangement with the tier one manufacture partner globally, they will help us, firstly, to procure very attractive price for the NAND. Second is, we don't need to take a risk or inventory and that will help us to deal with the BAT major customer.

Mehdi Hosseini

Got it. Very clear. Thank you. And just one quick for Riyadh, I'm just trying to better understand how you plan. Let's say, in a worst case scenario, if the Open Channel or incremental opportunities were not to materialize, how are you contemplating for your cost into 2020? I'm asking this so that we could better understand a worst-case scenario, given how you have adjusted and opportunities that could present to you? So, what if they don't happen? What's the worst case scenario with OpEx?

Riyadh Lai

Well, we have our OpEx related to our controller programs. And those, we have a very clear roadmap in terms of our projects, our technology, the customers and what we need to do to deliver on those objectives from an engineering and headcount perspective. And so, that roadmap will continue. Separately, we have our business plans relating to our Shannon SSDs and headcount related to that. And so, the headcount related to that will be dependent on how our business continues to progress.

Wallace Kou

Let me add a comment. So remember, all our enterprise controller support dual mode. One is Open Channel. The other is standard NVMe. So, for our engagement with BAT, they needed both SSD solution, Open Channel as well as NVMe standard. For other customers, we also can sell the same solution and load a different firmware as a standard NVMe. So, the development really is no risk for our effort regarding headcount or the capital expense.

Mehdi Hosseini

Great. Thank you. Thanks for all the details.

Operator

Thank you. Your next question comes from the line of Ari Shusterman from Needham & Company. Please ask your question.

Ari Shusterman

Hey, guys. Thanks for taking my question. So, I just want to transition over to this megatrend. So, when it comes to 5G, how do you expect that to affect your business? Just a little bit of color on that would be appreciated.

Wallace Kou

Yeah. We don't see the 5G going to impact our business, but we do see the 5G in the leading chipset maker like Qualcomm, the Snapdragon A65, they're going to move to UFS 3.0 that demand a higher performance [indiscernible] controller is ready which is a way for any smartphone maker, they are going to take for the Qualcomm next generation more than the AP [ph].

But for the data center, they're supposed to have a really new demand for data center, change overall infrastructure to support 5G [indiscernible] higher bandwidth have more [ph] people to use the big data.

Due to the global economic slowing down and also the other factor, now we see the 5G development is a little slower than our original plan. And data center, especially hyperscale in China, they also have more conservative plan in 2019. And they're definitely going to wait for the settlement between the US and China tariff war.

So, this is a potential impacts on the ramping regarding our Shannon business, but, overall, it's really – do not impact for our business.

Ari Shusterman

Thank you. One more question. So, the company seems to be significantly exposed to two companies, SK hynix for eMMC and Micron for UFS. Do you guys plans to have another major customer in either of these two spaces in near or long term?

Wallace Kou

As I said, we do see the China module maker start to grow strongly, especially for eMMC. We have six to seven major module maker that are winning for smartphone, also set-top box and they are growing rapidly. And we believe the ramping will become more manifold. It would be from second half. And that portion will continue to grow because the eMMC is going to stay with the low-end smartphone, all the mainstream high-end for move trending [ph] to UFS. But these customers eventually also worked off UFS, so we feel more balanced for our business for mobile and we feel much comfortable. Also, I think that we have all Micron's UFS socket that we believe they're going to grow rapidly second half of this year.

Ari Shusterman

Okay. Thank you.

Operator

Thank you. Our next question comes from the line of Donnie Teng from Nomura. Please ask a question.

Donnie Teng

Hi, Wallace and Riyadh. Thank you for taking my question. My first question is regarding to the full-year outlook. Although the visibility is quite low, but as you mentioned about – it is likely [indiscernible] to approximately similar to 2018 level. And you just mentioned about the SSD solution sales to decline over 10% year-on-year this year. I am just wondering if we can really meet a similar sales level as last year. What kind of gross magnitude on client SSD controller and eMMC controllers would be? And I will have follow-ups on the different business. Thank you.

Wallace Kou

Yeah. I think, as we said, during the – China's hyperscaler have a more conservative plan for SSD solution. We believe this year we're about 10% decline compared to 2018. But for SSD controller, we have a much stronger position, although Q1 is a little disappointed, but we do see the rebound in Q2. We also will see probably even stronger rebound in the second half of this year. Because growing PC OEM, not just the NAND maker, we also assist probably three to four module maker and the PC OEM program. And that would be really ramping quickly. As we said, we have a confidence this year that PC OEM market share, we're going to see similar increase compared to 2018.

For mobile, we believe overall we'll stay flat compared to 2018, although second half may be down, but we see that's relatively similar. That's the overall we see – that's why we – if you remove the FCI portion, [indiscernible] probably barely similar to 2018.

Donnie Teng

Got it. So, for different business segments, so for client SSD controller, I do a simple math, it's like your first half client SSD controller sales will grow, like, close to 20% year-on-year. And just wondering, what kind of sales growth for the overall industry. Do you have any idea about this year and how should we expect SIMO's client SSD sales growth to be higher or lower than the industry average?

Riyadh Lai

Donnie, let me step in and provide the caution that Wallace had provided earlier in his prepared remarks. We are very confident about the programs that we have. We still have very limited concrete visibility into the second half of the year. We have all the programs, we know where our products are going to be going into with PC OEMs and to which channels. But at the same time, we are still not able to have a concrete order forecast for the second half of the year. And so, when we talk about our full-year outlook, we're not saying that we're going to be growing 0% flat. We're talking about that based on the momentum and what we're seeing right now, there's a reasonable likelihood that our sales this year could be similar to last year, without providing even more position on a quantified basis.

Donnie Teng

And for eMMC-related sales, you just mentioned about that, that it's likely to be flat as last year. So, if we make assumption behind this, like, can we assume that the Korea major customer's order is still declining, but can – 100% offset by the new customers like China module makers and maybe US customers in the second half?

Wallace Kou

Yes, I think based on current forecast, it look likes the other Chinese module makers, their eMMC demand can offset the decline from Korean customer.

Donnie Teng

Got it. Got it.

Riyadh Lai

That's for UFS business.

Craig Irwin

Got it. And my one last question is housekeeping. So, I'm not sure if I listened correctly, so you said that you will have low-volume sales on enterprise controllers to US customers, right?

Wallace Kou

Small volume, that's correct. Second half of this year.

Donnie Teng

Okay, got it. Thank you so much.

Operator

Thank you. Your next question comes from the line of Charlie Chan from Morgan Stanley. Please ask the question.

Charlie Chan

Hi, Wallace. Thanks for taking my questions. So, first of all, I want to ask about the enterprise solution business. So, you mentioned that you outsource those NAND Flash procurement to your kind of Tier 1 manufacturing partner. So, my question is whether those NAND Flash cost would be accounted in your revenue when you sell those solution to your customers?

Riyadh Lai

Charlie, the NAND Flash cost would continue to be part of our cost of sales.

Charlie Chan

Okay. Okay. So, I am wondering because you mentioned that you are confident that the Open Channel solution can be qualified by customers on time. My question is that, do you expect that solution business revenue overall can recover to previous peak of revenue? I remember it could be like $35 million to $40 million during a peak. Do you think we can get to that revenue label in third quarter this year?

Riyadh Lai

Charlie, we're a little hesitant in putting a number and attaching a number to a quarter at this point in time, given that we still have a lot of work to do. But we feel fairly confident that we're tracking towards completing our testing by mid of the year and immediately afterwards going into commercial production.

But, overall, our SSD solution this year – our SSD solution this year of our Shannon plus Ferri products will be down by at least 10% compared to last year, with the primary driver not because of our Open Channel, but because of what we're seeing in China with the softening economic conditions and our Shannon customers dialing back and postponing their procurement in order to derisk their business outlook. And so, this is leading to lower levels of procurement for the full year based on what we're seeing today.

Wallace Kou

So, Charlie, let me add one comment. I think just on the math you need to understand is that enterprise SSD, the ASP declined almost 50% compared with last year. So, even we shipped the same big growth, our 20% big growth, our revenue for SSD for enterprise solution were declining 30% the last year. Do you understand that? It doesn't mean we are losing business. It's just the total dollar decline compared with last year.

Charlie Chan

Okay, okay. Yeah, that's fair enough. So, that's a follow-on on this part of the question. So, I remember, over the past two years, there were some other dynamics. For example, those that standout, enterprise SSD price become very competitive and that kind of jeopardized your kind of customized solution. And also, do you discount the kind of a [indiscernible] CapEx in the second half or you're assuming a recovery of those China BAT, the CapEx in second half as well?

Wallace Kou

I think I can only say – I cannot speak with the China BAT. But I think Open Channel, there definitely is corporate strategy for both the -- at least two of the three BAT customers. That's why there will be long-term strategy focused on Open Channel. But, however, this year, due to various factors that China hyperscaler have become more conservative than their procurement plan compared to the original plan from late last year. Now, also, due to the ASP decline sharply, I think one of the leading NAND maker make a very aggressive pricing. That's why the – overall, the price declined sharply for enterprise SSD solution. So, even we sell the same bid amount compared to 2018, the dollar, the sales revenue will decline.

Charlie Chan

Okay, okay. Thanks. And my second question is regarding your client SSD market share. So, I think there is some news, some reports saying about competition from some Asian competitors [indiscernible] and Realtek. So, I just want to get a kind of assumption about, first of all, the client SSD industry growth for this year according to your opinion and, secondly, your market share assumption and, lastly, the ASP erosion in SATA and the PCIe, respectively?

Wallace Kou

So, first of all, as we mentioned, we are now losing market share, but we are naturally growing market share this year. Second is, from time to time, we do see competitor use very aggressive pricing to approach our customers. But from time to time, we have to consider whether we need to share the pain if the price drop is reasonable. So, based on different condition, we will discuss a total bundle package with customers. But so far, we see we maintain very, very strong positioning among our module makers and we are gaining more OEM program from the top five PC OEM customers. That's where we are.

Regarding the PCIe and SATA, I think we do see PC OEM moving toward more for the PCIe. SATA portion, it's not going away, but the total percentage is declining. And we also see in China, the retail also start to adopt PCIe. And all our new project in PC OEM, they 2are almost 95% PCIe. But for the channel with the TLC SATA demand steadily, stably from both China and US, also Europe. And I think SATA, we've got a long tail. However, PCIe is going to grow strongly for PC OEM, also as well as the retail.

Riyadh Lai

Charlie, let me also add to your question about the potential competitor that you had mentioned. Late last year, a few of our module maker customers, they had used some of our competitors' controllers. These are companies with a shorter track record and these are for projects with fairly low volume. So, what we're seeing is that some of these projects are already ramping down, and so we don't feel that this is a threat at all to our business position.

As you know, controllers are hard to do well. And in the past, we've also faced a lot of competitors who wanted to come in the space and most of them have disappeared, if not all of them because they have not been able to stay relevant year after year. As you know, our customers have a choice, can make choices. For them, it's all about do they want to buy a Yugo, or do they want a Mercedes, or a Toyota.

Charlie Chan

Okay. So, a long question short, for this year, I remember you mentioned that client SSD revenue can grow more than 20% year-on-year for 2019 and what's kind of your new assumption now?

Wallace Kou

We also have a – I think from the momentum in Q2, [indiscernible]. But we have a very low visibility for second half this year. We definitely know we can grow client SSD controller business this year because we're the only one major focused company for all NAND maker, when they want to move the excess inventory, they'll come to us.

Charlie Chan

Okay, okay. Thank you.

Operator

Thank you. Your next question comes from the line of Suji Desilva from ROTH Capital. Please go ahead.

Suji Desilva

Hi, Wallace. Hi Riyadh. I just wanted a clarification here. You talked about the China BAT customers that Open Channel is strategic for them and you also talked about them having headcount reductions. I wanted to know if any of the Open Channel projects that they had at their firms were impacted by those headcount reductions or whether they remain strategic.

Wallace Kou

We say headcount reduction is for Tencent and JD.com and DiDi.

Suji Desilva

Okay. Okay, got it. That's helps. And then, the UFS ramp, is that more of a second half 2019 ramp or 2020 ramp? I know you're going to hit more when UFS becomes a volume part of the market versus the premium. So, when does that cut over start to help you guys in your revenues?

Wallace Kou

So, we already started to ramp the UFS from last two years. But just the first half, looks like the momentum is – the demand is low. But we see that currently, from the forecast, we're going to ramp gradually from second half this year because there are more new model coming from China as well as Korea.

Riyadh Lai

Suji, let me also add, our UFS last year were already 10% of our overall UFS plus eMMC sales revenue.

Suji Desilva

Got it. And are these models, guys, premium or mainstream models for UFS at this point?

Wallace Kou

Some are mainstream. Some are premium. Yes.

Riyadh Lai

Obviously. So, you are starting to see mainstream.

Suji Desilva

Okay. My last question is about PCs' SSD attach rates, where do you think that trends in 2019 versus 2018 given that SSD pricing has come in that maybe the PC OEMs want to be more aggressive? Where are the attach rates trending year-over-year?

Wallace Kou

Well, I think the consensus is around 20%. But we really don't know, like, HDD going to stay with some model because it's a dual drive and PC OEM is not going away to remove the HDD, but that's dual drive. But we do see there's a more different type of all-in-one PC coming. So, there's a lot of different variety in either storage and we do see the momentum from the PC OEM. They plan also for 2020 and 2021.

Riyadh Lai

And let me also add, the adoption of SSDs in PCs are reasonably high already, but there's still a lot of opportunities to displace the remaining hard disk drives in the PC market. But you also have other client device segments that are largely untapped by SSDs and these include consumer electronics and external storage.

Suji Desilva

Okay. Thanks, guys.

Operator

Thank you. Your next question comes from the line of Gokul Hariharan from J.P. Morgan. Please ask your question.

Gokul Hariharan

Hi, Wallace and Riyadh. Thanks for squeezing in my questions. My first question is on – could you give a little bit more color on what is your client SSD controller mix right now versus PC OEMs and module makers? If you could give that mix. As well as, could you give us some idea about what percentage of the market that you are serving in terms of client SSD is still in SATA and how much of it is moving to PCIe as we get into second half of the year since you had mentioned that almost 95% of your new projects for the PC OEMs are based on PCIe? That was my first question.

Riyadh Lai

So, regarding the ratio between OEM module maker, I would say we're about 5050. PC OEM around 50% and module makers around 50%. Regarding SATA versus the PCIe, we definitely have a much stronger demand for PCIe from PC OEM projects. From the channel side, I believe 80% PC OEM and 10% SATA. We'll see the transition. We believe, by end of 2019, PCIe SATA will be 5050 or PCIe will be a little higher.

Gokul Hariharan

Okay. Understood. Just one more question on your enterprise controller solutions that you mentioned that you would start in small volume for US customers. Are these kind of customers also hyperscale data center customers and are these engagements also related to Open Channel flash or are they more traditional enterprise or data center SSD controllers?

Wallace Kou

So, I would say we definitely tried to approach all the possibility, but currently we are engaged with the US Open Channel customer, but the volume of shipment in second half of 2019 has now Open Channel as the standard PCIe NVMe.

Gokul Hariharan

Okay. And is that for data center customers or is it for some of your similar enterprise OEM kind of customers itself…

Wallace Kou

It's for leading enterprise customers.

Gokul Hariharan

Okay. Thank you. One last question, in the previous years – obviously, stock price has corrected quite a bit. In the previous years, you guys have exercised a buyback option and, obviously, you're still fairly capitalized at this point in time. Any thoughts in terms of potential buyback of the stock given that the stock price is pretty much similar to where you had exercised some of those options in the past?

Riyadh Lai

We have a share repurchase program for 24 months – authorization for 24 months and this was given by our board late last year. So, our normal objective is to buy as much as cheaply as possible to maximize earnings accretion. But our related principle is, in order to repurchase, we need to have good visibility into our business, so good business visibility, as well as our visibility into cash flow generation, and with the objective that if the visibility is good and valuation is – our current valuation is low, we should buy a lot of shares. But if visibility is poor, we're going to be stepping away from that because we will then have – we will not have clarity in terms of our cash flow and, therefore, will not be buying our shares. And so, currently, the situation we're facing is business visibility is still quite limited, and so we're going to be temporarily being a lot more cautious about approaching buybacks.

Gokul Hariharan

Okay, thank you.

Operator

Thank you. That's all the time we have for questions today and I'd now like to turn the call back to Mr. Wallace Kou for his closing remarks.

Wallace Kou

I would like to thank all of you for joining us today and your continuing interest in Silicon Motion. We will be attending several investor conferences in Asia and US during the second quarter. Details of these events will be available on our website. Thank you for joining us.

Operator

Ladies and gentlemen, that does conclude our conference for today. Thank you for participating. You may all disconnect.