Astera Labs, Inc. Common Stock (ALAB) | The Buildout — AI Infrastructure
The Verdict
Astera Labs designs connectivity chips and modules — PCIe/CXL retimers, Ethernet cable modules, CXL memory controllers, and Scorpio AI fabric switches — plus COSMOS software that connects processors, memory, and network endpoints inside cloud and AI data centers. Its role in the AI buildout is the connectivity layer: switches, retimers, cable modules, and memory controllers that move data between XPUs and other processors.
| Market Cap | — |
| Revenue (TTM) | $1.0B |
| Revenue Growth | +104.2% |
| EBITDA Margin (TTM) | 23.3% |
| Net Cash | $1.1B |
| Earnings Beats | 7 of 7 |
| P/E (TTM) | — |
| EV/EBITDA (TTM) | — |
What We Like
- Scorpio X high-radix scale-up switches reached volume production in Q2 2026, and management expects Scorpio to become the largest product family in Q3 2026 — one quarter ahead of prior expectations.
- PCIe 6 revenue crossed from more than one-third of total revenue in Q1 2026 to more than 50% in Q2 2026.
- Q2 2026 revenue grew 27% sequentially and 104% year over year to $392.4M; the Q3 guide implies roughly 40% sequential growth at midpoint.
- Management says silicon dollar content per XPU has grown to multiple thousands of dollars, with the scale-up switch alone above $1,000 per XPU.
- More than 10 customers are engaged on Scorpio X, with shipments already going to multiple customers for qualification.
What We’re Watching
- Top five customers were approximately 90% of Q1 2026 revenue by disclosed percentages, and the Scorpio X ramp is led by an initial hyperscaler.
- Non-GAAP operating expenses exceeded guided ranges in Q1 and Q2 2026, and Q3 guided OpEx is $156M–$160M.
- Non-GAAP gross margin fell from 76.4% in Q1 2026 to 73.7% in Q2, with Q3 guided to ~72% and a long-term target of ~70%.
- 2027 optical, custom silicon, UALink, and CXL revenue is design-win-based, not contracted backlog; the company discloses no backlog or remaining performance obligations.
The thesis is strengthening on product ramp and revenue execution: Scorpio X moved to volume production, the Scorpio largest-product-family milestone was pulled forward into Q3 2026, and PCIe 6 content stepped up sharply. The open question is whether the lead-hyperscaler ramp broadens on schedule before the forward-dated 2027 vectors must convert.
Earnings Beat
Astera Labs reported Q2 2026 revenue of $392.4M, up 27% sequentially and 104% year over year, with non-GAAP gross margin of 73.7% and non-GAAP operating margin of 39.1%. PCIe 6 revenue crossed more than 50% of total revenue, up from more than one-third in Q1 2026.
| Metric | Q1 FY2026 | Q4 FY2025 | Q1 FY2025 | YoY |
|---|---|---|---|---|
| Revenue | $308M | $271M | $159M | +93.5% |
| Gross margin | 76.3% | 75.6% | 74.9% | +140bps |
| EBITDA | $66M | $70M | $12M | +428.2% |
| EPS | $0.44 | $0.25 | $0.18 | +148.2% |
| PCIe 6 share of revenue | >50% | >1/3 | n/a | — |
Astera Labs delivered outstanding results in Q2, with record revenue of $392.4 million, up 27% sequentially and up 104% year-over-year.— Jitendra Mohan, CEO, August 4, 2026
Management tone: Management's tone was confident and expansion-oriented across the Q1 and Q2 2026 calls, repeatedly framing the period as an inflection point and emphasizing Scorpio X volume production. Where questions touched protocol or competitive positioning, management reframed or deflected rather than directly comparing competitors.
Management Guidance
For Q3 2026, management guided revenue of $540M–$560M, with roughly 40% sequential growth at midpoint, non-GAAP gross margin of ~72%, non-GAAP OpEx of $156M–$160M, non-GAAP operating margin of ~43%, and non-GAAP diluted EPS of $1.16–$1.21. Management attributed the step-up to Scorpio X-Series volume production, continued Aries PCIe 6 retimer strength, and pre-production Taurus 800G modules. The company provides quarterly guidance only; no formal full-year guidance was provided.
Trajectory
The audited trailing sequence through Q1 2026 shows sequential revenue growth easing from +20.4% to +14.0%, but Q2 2026 revenue rose 27% sequentially and Q3 guidance implies roughly 40% at midpoint. Non-GAAP gross margin is stepping down — 76.4% in Q1 2026, 73.7% in Q2, and ~72% guided for Q3 — while non-GAAP operating margin expands from 36.2% to 39.1% and is guided to ~43% in Q3 because revenue growth outruns deliberate OpEx increases.
The Model
The locked model projects FY+1 revenue of $1,610M and EBITDA of $435M, a 27.0% margin, and FY+2 revenue of $2,645M and EBITDA of $963M, a 36.4% margin. Near-term, the Scorpio X ramp and PCIe 6 transition anchor the projection; FY+2 reflects management's 2027 optical, custom silicon, UALink, and broader CXL vectors.
| Metric | FY2025 | Next FY (E) | Following FY (E) |
|---|---|---|---|
| Revenue | $852M | $1.6B | $2.6B |
| YoY Growth | — | +88.9% | +64.3% |
| EBITDA | $180M | $435M | $963M |
| EBITDA Margin | 21.1% | 27.0% | 36.4% |
Projections are the median of 5 independent model runs. The model’s revenue sits 18.3% above analyst consensus.
For Q3 2026, management guided revenue of $540M–$560M, with roughly 40% sequential growth at midpoint, non-GAAP gross margin of ~72%, non-GAAP OpEx of $156M–$160M, non-GAAP operating margin of ~43%, and non-GAAP diluted EPS of $1.16–$1.21. Management attributed the step-up to Scorpio X-Series volume production, continued Aries PCIe 6 retimer strength, and pre-production Taurus 800G modules. The company provides quarterly guidance only; no formal full-year guidance was provided.
What Could Go Right — and Wrong
- Scorpio X broadens beyond the lead hyperscaler earlier than year-end, with multiple customers reaching production.
- A UALink-enabled Scorpio X switch lands for 2027 XPU platforms, confirming the UALink bet.
- Optical fiber coupler and NPO qualifications convert to volume in 2027.
- Custom silicon ships in 2027 and proves margin-accretive.
- Leo CXL converts broadly: Azure M-Series GA plus Leo volume at two U.S. hyperscalers.
- The lead customer's platform cadence shifts, or Scorpio X adoption stalls beyond the initial hyperscaler.
- Ethernet/ESON scale-up wins the architecture battle, and ALAB pivots late for the 2027 switch intercept.
- Gross margin falls below the 70% long-term target while OpEx keeps running above guidance.
- A competitor takes a marquee scale-up or optical socket.
- TSMC or OSAT supply allocation tightens in 2027 and gates the ramp.
Looking Ahead
The next 12 months turn on whether the Scorpio X ramp broadens beyond the lead hyperscaler and whether the 2027-dated vectors convert. Near-term, Q3 2026 results test the Q3 revenue guide and the largest-product-family milestone; by year-end, management has committed to additional Scorpio X customers, Azure M-Series CXL GA, and initial Scorpio P shipments to at least two additional hyperscalers. Into 2027, the major milestones are optical fiber coupler and NPO production, UALink-enabled Scorpio X switches, first custom silicon revenue, and Leo volume to two U.S. hyperscalers.
- Q3 2026Q3 2026 results and guide — Tests $540M–$560M revenue; Scorpio largest family; X-Series exceeds P-Series.
- Year-end 2026Scorpio X customer breadth — Additional customers beyond lead hyperscaler begin revenue shipments.
- End of 2026Microsoft Azure M-Series GA — Tests CXL memory controller ramp timing.
- End of 2026Scorpio P hyperscaler shipments — Initial shipments to at least two additional major hyperscalers.
- 2027Optical fiber coupler / NPO production — Qualification converts to volume; tests optical TAM expansion.
- 2027Custom silicon first revenue — NVLink Fusion and KV Cache/Leo initial shipments.
Financials
Annual Summary
| Metric | FY2024 | FY2025 | TTM | YoY |
|---|---|---|---|---|
| Revenue | $396M | $852M | $1.0B | +115.1% |
| Gross Margin | 76.8% | 75.6% | 76.0% | 112bps |
| EBITDA | −$113M | $180M | $51M | +259.7% |
| EBITDA Margin | -28.5% | 21.1% | 23.3% | +4,964bps |
| Net Income | −$83M | $219M | $268M | +362.7% |
| Free Cash Flow | $102M | $282M | $436M | — |
| Net Cash | — | — | — | — |
Key Ratios (Trailing)
- P/E TTM—
- EV/EBITDA TTM—
- EV/Revenue TTM—
- Price/FCF TTM—
- Gross Margin (TTM)76.0%
- EBITDA Margin (TTM)23.3%
- Net Margin (TTM)26.7%
- ROIC50.4%
- FCF Conversion146.9%
- SBC / Revenue16.6%
The Company
Astera Labs is a fabless semiconductor company supplying connectivity infrastructure for cloud and AI data centers. Its products include Aries PCIe/CXL retimers and cable modules, Taurus Ethernet smart cable modules, Leo CXL memory controllers, Scorpio smart fabric switches, and the COSMOS software suite; management also discusses optical products and custom silicon. The connectivity layer matters because larger AI clusters need more switches, retimers, cable modules, and memory attach to move data between XPUs, memory, and network endpoints.
The company is fabless: all ICs are fabricated by TSMC, and ASE and Amkor are disclosed assembly, packaging, and test partners. It is managed as one operating segment, headquartered in San Jose, with R&D facilities in Irvine, Texas, Canada, Germany, India, Singapore, and Vietnam, plus customer support and sales in China and Taiwan and an Israel Design Center integrated in Q1 2026.
Business Segments
Competitive Landscape
The supplied sources do not include a 10-K competitor list. The financial facts block's criticality assessment names Broadcom and Marvell as alternative suppliers for retimers and switches if ALAB disappeared, and the evidence pack provides ecosystem read-throughs for Broadcom, Marvell, Credo, and Microchip. Management tends to emphasize customer engagements and execution over competitor comparisons.
- BroadcomEcosystem read-through shows Q2 AI semiconductor revenue of $10.8B, +143% Y/Y, and FY26 AI revenue guided to $56B; also flagged with Marvell as an alternative supplier in a supplied criticality assessment.
- MarvellEcosystem read-through shows interconnect growth raised to >70% for FY27 and FY28 revenue target raised to ~$16.5B; also flagged with Broadcom as an alternative supplier.
- Ecosystem read-through shows FY27 growth raised to >80% and optical revenue guided to >$600M, with initial CPO/NPO revenue expected FY28.
- MicrochipEcosystem read-through shows a PCIe Gen6 switch win expected to bring $100M+ in calendar 2027 revenue.
Supply Chain
Astera Labs sits between foundry and OSAT suppliers and hyperscaler and AI platform customers, providing connectivity silicon and modules for AI racks and clusters.
More on ALAB: Earnings recap