Astera Labs reported a blowout quarter with beat/raise that is impressive even for ALAB’s standards. Not only did Astera Labs beat by nearly $20M or 11.3% but the guide exceeded this and beat by 14.35%.
To sweeten the deal, the roughly $20M beat flowed through to profits for a company that is comfortably GAAP profitable despite a fairly recent IPO in 2024 with elevated stock-based compensation at 20% of revenue.
The fundamental profile of Astera Labs could not be cleaner, and when it comes to its products, the company said all the magic words such as ramping in volume, new design wins with ten customers including merchant GPUs and ASICs, plus a line of sight to further sales growth from their many product lines in H2 2025 and 2026, and the upcoming UALink consortium in 2027.
To illustrate, in the opening remarks, the company pointed toward the drive for low latency PCIe as the primary contributor to the beat/raise across both the Aries and Scorpio products. Launched only this year, Scorpio now exceeds 10% of total revenue “making it the fastest-ramping product line in Astera Labs’ history.”
Management also stated there were new design wins across multiple customers this quarter with PCIe6 solutions beginning “volume ramp during the quarter within rack-scale merchant GPU-based systems.” This is music to our ears as it indicates ALAB is a direct beneficiary to the highly anticipated Blackwell systems. More specifically, it was stated the Scorpio smart fabric switches transitioned to volume production in Q2 for PCIe6 scale-up applications “deployed within GPU customized rack scale solutions.”
UALink was also discussed at length, which is the open source alternative to proprietary interconnect protocols such as Nvidia’s NVLink. The data rate specifications of up to 200G per lane combined with the low latency of PCIe6 puts Astera in an “excellent position.” Per management: “As a leading promoter of UA Link, Astera Labs is committed to developing and commercializing a broad portfolio of UA linked connectivity solutions ranging from AI fabrics to signal conditioning solutions and other I/O components. Proliferation of UA Link in 2027 and beyond will represent a long-term growth vector for Astera Labs.”
In terms of quantifying where this could lead, management stated: “scale up connectivity for rack-scale AI infrastructure alone will add close to $5 billion of market opportunity for us by 2030” although truly the opportunity could be higher given it was also stated: “our silicon dollar content opportunity has expanded into the range of multiple hundreds of dollars per AI accelerator which has effectively established a new revenue baseline for the company.” From there, it was further stated that Scorpio-X will cause the dollar content opportunity to increase even further: “Given the extreme importance of scale-up connectivity to overall AI infrastructure performance and productivity, we see Scorpio X Series solutions as the anchor socket with the next-generation AI ranks. We are engaged with over 10 unique AI platform and cloud infrastructure providers who are looking to utilize our fabric solutions for their scale-up networking requirements. We look for Scorpio series to begin shipping for customized scale-up architectures in late 2025, with a shift to high-volume production over the course of 2026.
With the ramp of Scorpio X Series for scale-up connectivity topologies next year, we expect our overall silicon dollar content opportunity per AI accelerator to significantly increase. Overall, we expect this to be another step-up from a baseline revenue standpoint. Also, given the sale of the scale up connectivity opportunity, we expect our Scorpio X Series revenue to quickly outgrow Scorpio P-Series revenue. In 2026 and beyond, cloud platform providers and hyperscalers will begin to deploy next-generation platforms as the industry transitions to AI infrastructure 2.0.”
Usually, I put these bigger quotes at the bottom under the Q&A yet I didn’t want our Members to miss the emphasis the earnings call had on future growth. But be sure to not miss the additional strong commentary regarding H2 2025, 2026 and 2027 noted below.
We’ve covered more on Astera’s products and positioning in this analysis here and here.analysis here and here.
Revenue Beats by 25 Points, Guide Beats by 22.8 Points (wow!)
Astera Labs reported revenue of $191.9 million, beating consensus of $172.5 million for growth of 150% YoY and 20% QoQ. About eight months ago in November, analyst consensus for the June quarter was for 85% growth — thus the company has nearly doubled these expectations in less than a year. Going into the print, analysts had been steadily raising consensus for growth expectations of 124.4% and Astera beat these estimates by 25 points. This technically marks accelerating growth from last quarter, which reported growth of 144.3%.
For the September quarter, the beat is also pronounced on a YoY basis although less so on a QoQ basis given the strong beat this quarter. Management guided for revenue of $206.5 million at the midpoint for growth of 82.6% YoY and 7.6% QoQ. Going into this print, analysts were expecting 59.8% growth, with Astera beating by 22.8 points.
For perspective, about eight months ago, Astera was expected to report $157.5 million for 39.3% growth in the upcoming September quarter. Today, Astera is guiding for more than double growth expectations from less than a year ago. I’m presenting these historical estimates to help illustrate just how quickly Astera has skyrocketed from ideal positioning in the AI networking stack. We’ve covered more on Astera’s products and positioning in this analysis here and here.
Margins and EPS: The $20M beat flows directly to profits
The only thing that can sweeten the deal of a 25-point top line beat is a similarly strong bottom line beat. Astera delivered in that regard with a GAAP operating margin of 20.7% compared to 7.9% expected. This led to GAAP profits of $39.8M compared to $13.7M expected, helping to see the operating leverage as the $19.4M beat flowed nicely down the income statement (plus some).
Here’s a visual on how the GAAP profile of ALAB has rapidly improved:
- Gross margin of 75.8% was up 90 bps from last quarter yet was down 210 bps from the year ago quarter. This led to gross profits of $145.6M, beating the guide for $127.7M. Adjusted gross margin was similar at 76%.
- GAAP operating margin of 20.7% is a major win for ALAB investors as the company is now comfortably GAAP profitable despite stock based compensation being around 20% of revenue.
- Adjusted operating margin of 39.2% compares to the guide for 31.1% leading to adjusted operating profits of $75.3 million. This is significantly higher than the adjusted operating profits of $18.7 million in the year ago quarter.
- The GAAP net margin of 26.7% for net income of $51.2M is significantly higher than the (9.8%) net margin from a year ago and represents a 670 bps improvement QoQ.
- The adjusted net margin of 40.7% is up from 28.9% last year and 330 bps improvement QoQ.
Cash:
Astera’s cash from operations increased significantly with an operating cash flow margin of 70.5% up from 38.7% last year. This totaled operating cash of $135.4M with $1.07B in cash on the balance sheet and no debt.
The company provided a 6 month statement for its cash flows rather than a quarterly statement, but it’s easy enough to deduce that the majority of operating cash flow went to the cash reserves as free cash flow. On a six month basis, the company had free cash flow of $139M with $6M last quarter, leaving about $133M in free cash flow this quarter for a FCF margin of 69.3%.
Earnings Q&A:
More commentary regarding future growth:
To say you have 10 customers (who we can infer are at massive scale) is a strong statement for a company like Astera Labs sitting at a run rate of roughly $800M. Buried in the call, management clarified these customers are “nearer-term opportunities that we are tracking based on PCIe.”
What Astera is referring to is that PCIe 6.0 doubles the bandwidth of PCIe 5.0, reaching up to 256 GB/s. This is crucial for Blackwell GPUs, as the increased bandwidth translates into faster data transfers for quicker processing and reduced latency when training an AI model training and for inference.
At the end of the call, it was also clarified the way these customers will ramp should help growth into the foreseeable future:
Sujeeva De Silva ROTH Capital Partners
Helpful. And then my follow-up on Scorpio X, you talked about 10 customer engagements. I'm wondering if that implies multiple programs per customer, if they're going to think about using you standard in their platforms? Any color on how those are kind of shaping up would be helpful in programs versus customers.
Sanjay Gajendra Co-Founder, President, COO & Director
Yes. So 10 plus we noted are unique customers now within each customer, there are multiple opportunities that we're tracking. Some of them are design wins, and some of them are ramping to production. Some of them are design ins going through qualification. Some of those are early engagement. So in general, we are very pleased with the amount of traction that we're seeing for our Scorpio family.”
There was additional commentary offered in terms of how they plan to retain these customers and perhaps even increase their sales during the transition to UALink open standards:
“And we do have, like I noted, several customers, we are counting 10 plus right now that are looking at leveraging some of these open standards, whether it's PCIe in the short term, combination of PCIe and UA Link in the midterm and transitioning perhaps to a broader UA Link deployment in 2027 and later. So overall, I think the momentum is shifting positively, and we are excited to be in the middle of it and driving the adoption of open and scalable supply chain in the market.”
Later, it was clarified the ten customers are primarily for Scorpio X-Series – which has not even ramped yet – spelling good things for future growth.
“This, we see, like you noted, as an anchor socket because that is truly the socket that holds all the GPUs together, and today, like we noted, we have 10 plus customers that we are engaging when it comes to scale up networking using Scorpio X-Series.”
It was later stated the X-Series will grow beyond Scorpio P-Series which is what is driving the growth right now: “For the X Series, we do have preproduction volumes here, but really, that starts to go into high volume production during the course of 2026 and layering even more growth. Ultimately, what we called out is the X Series is going to grow to be bigger than P-Series"
There were a few additional comments pointing toward strong growth in 2026:
“The scale up this year is predominantly preproduction volumes. And these systems are pretty complex that they're shipping into. So we like to try to be conservative on how we telegraph those going forward. But the volume opportunities scale up connectivity for switching is a much bigger dollar opportunity for us as we look forward. But those designs really will start to enter into full volume production during the course of 2026. So not a driver in the next couple of quarters.”
Conclusion:
Astera is a strong contender for best earnings report of the quarter – not only in I/O Fund’s portfolio but broadly speaking across the tech sector (the other contender across the tech sector is Reddit).
This company is firing on all cylinders with unique positioning in the AI economy as they serve both merchant GPUs and custom silicon – which is what makes 10 customers a possibility.
What I liked most about this call was management clearly outlining how they plan to drive future growth across its product lines, plus across a diverse set of customers throughout 2026 – and they furthered the discussion on how ALAB will strategically continue to drive growth during the anticipated transition to UALink in 2027.
The note from our last portfolio meeting following my Top 15 Stocks report was “is 20% allocation too high for Astera Labs?” Apparently not. It’s at 16% now, and by default, will open at a higher allocation tomorrow.
Please note: The I/O Fund conducts research and draws conclusions for the Fund’s positions. We then share that information with our readers. This is not a guarantee of a stock’s performance. Please consult your personal financial advisor before buying any stock in the companies mentioned in this analysis. Beth Kindig and the I/O Fund own shares in “ALAB” at the time of writing and may own stocks pictured in the charts.
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