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    ALAB
    Earnings call· Sep 2025(Q3 FY25)

    Astera Labs, Inc. ALAB

    Nov 4, 2025 Source

    Executive summary

    Astera Labs Q3 FY25 — Strong Revenue Growth and Record Profitability Driven by AI Infrastructure Demand

    Astera Labs delivered a robust Q3 FY25, exceeding expectations with significant revenue growth and record profitability, driven by broad-based demand across its signal conditioning, smart cable module, and switch fabric products for AI Infrastructure 2.0. The company is strategically expanding its portfolio into optical interconnects through the Xscale Photonics acquisition, while actively engaging with hyperscalers on open standards like UALink to solidify its long-term growth trajectory in rack-scale AI deployments.

    Highlights

    5

    • Quarterly revenue of $230.6 million, up 20% from prior quarter and 104% versus Q3 FY24.

    • Non-GAAP operating margin reached a new record level of 41.7%, up 250 basis points QoQ.

    • PCIe 6 solutions, including Aries 6 and Scorpio P-Series, contributed in excess of 20% of Q3 revenues.

    • Scorpio P-Series secured new design wins across a variety of AI platforms at multiple hyperscaler customers.

    • Strategic acquisition of Xscale Photonics to develop photonic scale-up solutions, expanding into optical interconnects.

    Guidance & targets

    14
    CategoryTargetConfidence
    Q4 FY25 Revenue
    $245M-$253M
    high materiality
    High
    Q4 FY25 Non-GAAP Gross Margin
    approximately 75%
    medium materiality
    High
    Q4 FY25 Non-GAAP Operating Expenses
    $85M-$90M
    medium materiality
    High
    Q4 FY25 Interest Income
    approximately $11M
    low materiality
    High
    Q4 FY25 Non-GAAP Tax Rate
    approximately 15%
    low materiality
    High
    Q4 FY25 Non-GAAP Fully Diluted Share Count
    approximately 183M shares
    low materiality
    High
    Q4 FY25 Non-GAAP Diluted EPS
    approximately $0.51
    high materiality
    High
    Scorpio X-Series Volume Ramp
    throughout 2026
    high materiality
    High
    Taurus 800-gig Expansion
    further growth in 2026
    medium materiality
    Medium
    UALink Solutions Availability
    available to customers in the second half of 2026
    high materiality
    High
    UALink Early Revenues
    generated in 2027
    high materiality
    High
    Optical Scale-up Connections Material Revenue
    2028, 2029 time frame
    medium materiality
    Medium
    Employee Count
    more than 700 employees
    low materiality
    High
    Scorpio X-Series Revenue vs Aries
    Scorpio to overtake Aries
    high materiality
    Medium

    Segment performance

    4
    SegmentRevenueYoYQoQMargin
    Scorpio (Switch Fabric)
    Scorpio P-Series continued its initial volume ramp and secured new design wins. Scorpio X-Series is in preproduction with a significant ramp expected in 2026, and is expected to become the largest product line by revenue in 2026.
    P-Series: initial volume ramp at lead customerP-Series: new design wins across variety of AI platforms at multiple hyperscaler customersX-Series: shipping in preproduction quantitiesX-Series: volume ramp expected throughout 2026X-Series: initial volumes shipping in Q4 FY25
    		————
    Aries (Signal Conditioning)
    Aries portfolio performed well, with PCIe 6 solutions driving robust growth and contributing over 20% of Q3 revenues. Expansion is noted as AI racks adopt PCIe 6.
    PCIe 6 solutions: contributed >20% of Q3 revenuesPCIe 6 solutions: ramping in high volume today
    		——robust growth—
    Taurus (Smart Cable Module)
    Taurus drove strong growth in Q3 with incremental opportunities shipping in volume. Further growth is expected in 2026 as the product line expands to 800-gig switching platforms, with Q4 growth driven by 400-gig designs.
    Incremental opportunities: shipping in volume across AI and general purpose systemsExpansion: to 800-gig switching platforms in 2026Q4 FY25 growth: expected to be driven by increased volumes on 400-gig designs
    		——strong growth—
    Leo (CXL Memory Expansion)
    Customers are exploring AI inference use cases for Leo CXL memory expansion products, broadening opportunities beyond current general purpose compute applications.
    Customers: exploring AI inference use casesUse cases: offload memory from expensive on-package HPM to large pools of DDR5 memory
    		————

    Operational metrics

    17
    Revenue
    $230.6Mup 20% QoQ, up 104% YoY
    Q3 FY25

    Quarterly revenue, exceeding outlook.

    Non-GAAP Gross Margin
    76.4%up 40 bps QoQ
    Q3 FY25

    Improved due to product mix remaining largely constant across higher volumes.

    Non-GAAP Operating Expenses
    $80Mup $9.4M QoQ
    Q3 FY25

    Increase due to higher payroll taxes and R&D expansion.

    R&D Expenses
    $57.2M
    Q3 FY25

    Component of non-GAAP operating expenses.

    Sales and Marketing Expenses
    $10M
    Q3 FY25

    Component of non-GAAP operating expenses.

    General and Administrative Expenses
    $12.8M
    Q3 FY25

    Component of non-GAAP operating expenses.

    Non-GAAP Operating Margin
    41.7%up 250 bps QoQ
    Q3 FY25

    New record level for the company.

    Interest Income
    $11.5M
    Q3 FY25

    Income from investments.

    Non-GAAP Tax Rate
    18%
    Q3 FY25

    Effective tax rate for non-GAAP earnings.

    Non-GAAP Fully Diluted Share Count
    180.6M
    Q3 FY25

    Shares used for diluted EPS calculation.

    Non-GAAP Diluted EPS
    $0.49
    Q3 FY25

    Earnings per share on a non-GAAP basis.

    Cash and investments balance
    $1.13B
    Q3 FY25

    Total cash, cash equivalents, and marketable securities at quarter end.

    PCIe Gen 6 Revenue Contribution
    >20%
    Q3 FY25

    Contribution from Aries PCIe 6 and Scorpio P-Series products.

    Scorpio P-Series Revenue Contribution
    closer to 20%
    FY25

    Expected exit rate for the full fiscal year 2025.

    AI Infrastructure CapEx Forecast
    >$500B
    CY26

    Analyst forecast for capital expenditure to meet AI demand.

    Token Generation Doubling Rate
    every 2 months
    ongoing

    Indicates rapid growth in AI use cases and demand for compute.

    Scorpio X-Series Engagements
    over 10
    current

    Number of AI platform providers engaged with for PCIe-based scale-up solutions.

    Industry KPIs

    4
    MetricValueDetails
    Ai data center revenueEntire business focused on AI infrastructure
    Design wins socket pipelineMultiple design wins and engagements
    Node platform ramp scheduleMultiple product ramps
    End market segment revenue mixBroad-based growth

    Deals & partnerships

    1
    Xscale PhotonicsProvider of leading-edge fiber chip coupling technologies.

    Acquisition will enable Astera Labs to develop photonic scale-up solutions by combining Xscale's fiber chip coupling capabilities with Astera Labs' connectivity and signal conditioning expertise. It represents an important step in the long-term optical journey to intercept a large additive market opportunity associated with scale-up photonics.

    What to watch in Q4 FY25

    5

    Scorpio X-Series Volume Ramp

    Over the course of 2026
    CurrentShipping in preproduction quantities
    TargetHigh-volume production

    Why it matters

    The ramp of Scorpio X-Series is expected to significantly increase the overall dollar content opportunity per AI accelerator, representing a step-up in baseline revenue.

    Scorpio X-Series is shipping in preproduction quantities with a volume ramp expected throughout 2026.

    Q&A highlights

    8

    Given new Ethernet-based scale-up architectures, has the design win pipeline for Scorpio X or UALink changed, or has it expanded?

    The market opportunity for scale-up products, particularly Scorpio X, continues to grow. PCIe-based scale-up solutions are ramping, with over 10 AI platform providers engaged. UALink is a meaningfully additive opportunity with strong momentum, and multiple standards are expected to coexist. The company is confident in addressing emerging scale-up market opportunities.

    “We continue to see our market opportunity grow for our scale-up products, particularly Scorpio X product like you noted. Scale up, as you can imagine, it's a very large market. We estimate it to be in tens of billions of dollars.”

    asked by Harlan Sur · answered by Sanjay Gajendra

    2 min read6 chapters

    Detailed Narrative

    01

    Q3 Performance Highlights

    Astera Labs reported strong Q3 FY25 results, with revenue reaching $230.6 million, marking a 20% sequential increase and a 104% year-over-year surge. Growth was broad-based across its signal conditioning (Aries), smart cable module (Taurus), and switch fabric (Scorpio) products. The company achieved a record non-GAAP operating margin of 41.7%, up 250 basis points from the prior quarter, demonstrating strong profitability alongside rapid expansion.

    02

    AI Infrastructure 2.0 and Open Standards

    The company emphasized its focus on AI Infrastructure 2.0, driven by increasing AI use cases and surging demand for compute. This shift necessitates ultra-low latency, all-to-all connectivity for large workloads. Astera Labs is advancing its intelligent connectivity platform based on open standards, showcasing its full portfolio at the 2025 Open Compute Project Global Summit with 15 industry partners, highlighting the importance of an open ecosystem for AI rack-scale infrastructure.

    03

    Product Line Momentum and Diversification

    Scorpio P-Series continued its initial volume ramp and secured new design wins at multiple hyperscalers across various AI platforms. Scorpio X-Series is shipping in preproduction, with a volume ramp expected throughout 2026, poised to significantly increase dollar content per AI accelerator. Aries PCIe 6 solutions are ramping in high volume, contributing over 20% of Q3 revenues, while Taurus is expanding to 800-gig switching platforms in 2026. Leo CXL memory expansion products are also exploring AI inference use cases.

    04

    Strategic Optical Expansion with Xscale Photonics

    Astera Labs announced the definitive agreement to acquire Xscale Photonics, a provider of fiber chip coupling technologies. This acquisition is a strategic move to develop photonic scale-up solutions, combining Xscale's capabilities with Astera Labs' expertise. The goal is to enable future Scorpio scale-up switches with optical solutions to expand rack-scale cluster sizes, intercepting a large additive market opportunity associated with scale-up photonics, with material revenue expected in the 2028-2029 timeframe.

    05

    UALink Progress and Future Outlook

    The company expressed enthusiasm for the UALink scale-up connectivity standard, which combines PCIe's low latency and Ethernet's fast data rates. Customer activity around UALink is strong, with engagements in RFP and RFQ stages with leading hyperscalers and AI platform providers. A portfolio of UALink solutions is expected to be available in H2 2026, with early revenues anticipated in 2027, positioning UALink as a meaningfully additive opportunity to PCIe scale-up revenues.

    06

    China Market Opportunity

    In China, due to constraints on IP and technology availability, there is significant demand for PCI Express-based scale-up solutions. Chinese hyperscalers often require more GPUs to solve problems that might be addressed with fewer in the U.S., creating a larger opportunity for Astera Labs to sell both its switching and retiming solutions, as revenues are typically indexed by the number of GPUs/accelerators.

    AI-generated summary of the company’s earnings call. Not investment advice.