Introducing Silicon Motion SIMO

Investment Analysis Clubs Saul’s Investing Discussions
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Silicon Motion is a fast growing fabless semiconductor serving mobile, PC, and more recently AI enterprise market. They make NAND memory controllers and other hardware devices for memory makers.

The company has an impressive customer list including Micron, SK Hynix, Samsung, and Sandisk. In prior years many of these memory makers would compete with Silicon Motion by “insourcing” memory controllers. However in the past year most of these memory makers have exited the controller business ceding a huge amount of market share to Silicon Motion. Silicon Motion’s innovation lead in memory controllers has also increased.

What is even more interesting from an investor perspective is Silicon Motion signed NVIDIA as a customer in Q2 of 2025 for boot drive controllers in NVIDIA’s BlueField DPUs (Data Processing Units). Additionally, Silicon Motion landed the “largest ASIC” producer for boot drives as well in early 2026, which is almost certainly Google’s TPUs from my research. However, these AI enterprise sales still make up around 10% of revenue but this segment grew 125-130% qoq.

This entry into the AI enterprise market with NVIDIA and Google is showing up quickly in their results. The company normally sees seasonality in their business going from Q4 to Q1, because PC and smartphone sales were strongest in the Q4 holiday season. Now the company is guiding revenue up +10% sequentially and +83% yoy. They say they have completely overcome their normal seasonality.

Even more incredibly, they are saying they will see sequential growth throughout the entirety of 2026, with expanding margins throughout the year as well. The second half of the year sounds especially strong with the backlog they mention.

Silicon Motion is still founder led by Chia-Chang Kou “Wallace” going back to 1995. The company IPO’d as an ADR in 2005 on the Nasdaq and is also listed on Taiwanese exchanges. There’s 1819 employees with most being R&D in Taiwan, but they have sales offices in California.

The valuation is probably the most compelling aspect to this semiconductor business from an investor perspective. Market cap currently is 4.7B but they got 279M of revenue in Q4 2025 which was +46% yoy and +15% qoq. Guidance had been for 254 - 266M so a decent outperformance of where they projected. Additionally the company had 48M of net income and 49% gross margins on the latest quarter, the highest for these metrics over the past year. The company is highly profitable currently and paying a 1.5% dividend.

There’s a lot more details in the video going into more specifics on the company’s narrative and financials. I’m finding this name to be one of the most compelling opportunities in the market right now and I currently have a 4% position. Silicon Motion reports early in the earnings season on April 28.

Any feedback is welcome as usual!

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Nice find and great analysis, as usual.

YT channel Chip Stock Investor did a deep dive back in Jan, when the stock was about $110:

In terms of being a supplier to Nvidia for the DPUs in the AI servers, however, Silicon Motion is buying NAND and pairing it with their controller that is then sold to Nvidia (company not actually named) for an ASP (Average Selling Price) of $20-$30. So, that’s a few bucks per rack, and even at Nvidia’s current peak of 15k racks per quarter, it’s not a lot of money. They quote the CFO as saying this is mostly to gain trust from Nvidia and to pitch new products, such as potentially flash memory controllers, and the Chip Stock Investor folks speculate maybe even HBM in the future. They also think by the end of this year, the AI-related business might grow to become 5% to 10% of the company’s revenue.

They were pretty happy with SIMO trading at $110 then, a nice runup for them, but I wonder what they would think today with the stock pushing $140 .

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Good point there on the ASP being fairly low for the MonTitan boot drive. I had that in my notes as well, but it was challenging to pinpoint the exact pricing as that seems to be confidential. They are also going to be included in BlueField-4, the component going into Vera Rubin. I believe Silicon Motion said directly it’s a higher ASP and margins for BlueField-4 because there are more underlying controller components involved. I like that they said they view it as strategic sales or a way to get their foot in the door with NVIDIA.

They never actually mentioned NVIDIA by name, but it got revealed through a variety of ways from what I discovered.

  • Silicon Motion mentioned “BlueField” wins which is NVIDIA’s brand
  • Silicon Motion was at the GTC conference with their own booth talking about solutions aligned with the NVIDIA AI ecosystem
  • Bank of America upgraded them and cited partnerships with NVIDIA among others

It is kind of similar story with figuring out Silicon Motion is selling to Google TPU systems as well with an analyst revealing you got the “biggest ASIC” maker out there. It seems Silicon Motion is being pretty cautious there on revealing any aspect of a customer architecture which makes sense from a liability or NDA perspective.

From what I was able to gather from AI, a Grace Blackwell GB300 has 18 BlueField-3 DPUs, so I believe this means there is a corresponding 18 devices from Silicon Motion. Looks like Vera Rubin will also have 18 DPUs but using BlueField-4, and the potentially higher ASP from Silicon Motion. Overall it’s probably a few hundred dollars of revenue per top GB300 being sold, but definitely a good start to this “strategic” partnership as they call it.

On the Chip Stock Investor video they mentioned there at the end how that company MaxLinear tried to acquire Silicon Motion a couple years back and then sued them. I looked into that and my understanding was that Silicon Motion’s business took a nosedive in 2023 when PC and smart phone sales cooled off. MaxLinear claimed that Silicon Motion knew about the decline in their business already but did not disclose it. The courts ruled recently in Silicon Motion’s favor, and it’s basically case closed. I didn’t mention it on the video since it seemed to have gotten completely resolved in favor of SIMO.

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At about 2:55 into this video, we see an Nvidia Groq 3 LPX tray for inference. It has 8 LPU (Language Processing Units, from Goq), an FPGA, a host CPU, and a Bluefield-4. So, that would be a Silicon Motion component within that Bluefield-4 per tray, and 32 trays per rack.

More on Bluefield later in the video, starting at about 15:45.

If you’re nerdy, this is also a good explanation of where Nvidia’s at these days. Good explanation of just what’s in Vera-Rubin and why it’s so much faster, and faster per watt. The NVL72 compute and Groq 3 LPX compute trays are completely liquid cooled now, no air fans, with the incoming “cool” liquid at 113ºF!

At one point one of the Nvidia guys talks about “Goodput” instead of “Throughput,” and he explains the difference in terms of repair time. And they use a whole tray just for networking, claiming to be able to transfer the whole content of the internet in a second, if I heard that correctly!

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The Q1 headline numbers came in incredibly strong! Just made a quick Post over on Youtube with my initial take, and the conference call will be tomorrow morning,

Wow! Silicon Motion $SIMO from my latest video just posted one of the strongest beats and guides I have seen in awhile. Their headline numbers surpassed my wildest expectations!

The company had guided Q1 revenue for 292 - 306M, analysts were looking for 300M, and I said in the earnings preview from the video I’d be happy with 320M. The actual revenue landed at 342M, up +23% qoq and +105% yoy. This is keeping in mind Q1 was typically their weakest quarter in the past, seeing previous sequential declines in revenue going from Q4 to Q1.

On next quarter Q2 guidance analysts had modeled 307M of revenue, and I said I would be looking for a revenue guide of 325 - 335M. However, their guidance landed at a stunning 393 - 411M, +20% qoq and +107% at the top end of the range. The management previously assured investors they will sequential growth through the entirety of 2026.

With profitability, analysts expected $1.10 of GAAP EPS for Q1. I mentioned in the video this number did not make sense to me because in Q4 they got $1.40 of EPS. However, I did caveat I could be missing something here, but expected $1.50 of GAAP EPS with the higher revenue number. Silicon Motion also crushed this earnings number getting all the way to $1.97 of GAAP earnings!

Lastly the company’s guidance for operating margin next quarter is from 19.8% to 21.1%, while the current quarter had 15.3% for operating margin. Not only is this company seeing skyrocketing revenue, but profitability and margins are shooting up too!

The actual conference call detailing the quarter further will be tomorrow April 29 in the morning. Really excited to see what the team has to say, and the stock is likely to be up huge on this set of numbers!

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now up 41% on the day … nice work

:clap: :clap: :clap: :clap:

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