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    AAOI
    Earnings call· Dec 2025(Q4 FY25)

    APPLIED OPTOELECTRONICS Q4 FY25 earnings call AAOI

    Feb 26, 2026 Source

    Executive summary

    Applied Optoelectronics Q4 FY25 — Record Revenue Driven by Strong CATV and Data Center Demand, 800G Ramp Expected Q2 FY26

    Applied Optoelectronics reported record Q4 FY25 results, driven by robust demand in both CATV and data center segments, with non-GAAP gross margin exceeding expectations. While 800G revenue was delayed to Q2 FY26 due to firmware optimization, the company anticipates a strong ramp, backed by significant capacity expansion and new customer engagements for 800G and 1.6T products, positioning it for over $1 billion in revenue in FY26.

    Highlights

    5

    • Total revenue increased 34% year-over-year to a record $134.3 million in Q4 FY25.

    • Non-GAAP gross margin of 31.4% was above the guidance range of 29-31%.

    • Non-GAAP loss per share of $0.01 was narrower than the guidance range of a loss of $0.13 to a loss of $0.04.

    • Received fourth 800G volume order from a major hyperscale customer, with production ramp anticipated in Q2 FY26.

    • CATV revenue nearly tripled to $245 million in FY25, driven by robust demand for 1.8 gigahertz amplifiers.

    Concerns

    4

    • 800G revenue came in below expectations ($4 million-$10 million) in Q4 FY25 due to ongoing firmware optimizations, delaying significant ramp to Q2 FY26.

    • Total capital investments in FY25 were $209 million, exceeding projections of $120 million-$150 million, primarily due to increased customer demand projections.

    • Non-GAAP operating expenses increased to $49.3 million (37% of revenue) in Q4 FY25, compared to $31.5 million (31% of revenue) in Q4 FY24.

    • Direct tariffs had a $1.2 million impact on the income statement in Q4 FY25.

    Guidance & targets

    21
    CategoryTargetConfidence
    Q1 FY26 Revenue
    $150 million to $165 million
    high materiality
    High
    Q1 FY26 Non-GAAP Gross Margin
    29% to 31%
    medium materiality
    High
    Q1 FY26 Non-GAAP Net Income
    loss of $7 million to a loss of $0.3 million
    high materiality
    High
    Q1 FY26 Non-GAAP EPS
    loss of $0.09 per share and breakeven
    high materiality
    High
    FY26 Revenue
    Over $1 billion
    high materiality
    High
    FY26 Non-GAAP Operating Profit
    Over $120 million
    high materiality
    High
    CATV Revenue
    Nearly $300 million annually
    medium materiality
    Medium
    800G/1.6T Production Capacity
    Over 500,000 pieces per month
    high materiality
    High
    800G/1.6T Production Capacity from Texas
    ~1/4 of total
    medium materiality
    High
    800G/1.6T Production Capacity from Texas
    More than 55%
    high materiality
    High
    Laser Manufacturing Capacity
    More than triple
    high materiality
    High
    100G and 400G Monthly Revenue
    Approximately $90 million
    medium materiality
    High
    800G Monthly Revenue
    Approximately $217 million
    high materiality
    High
    1.6T Monthly Revenue
    Approximately $71 million
    high materiality
    High
    Total Transceiver Monthly Revenue
    $378 million
    high materiality
    High
    Non-GAAP Gross Margin
    Around 40%
    high materiality
    High
    Non-GAAP Gross Margin (Transceiver)
    35% to 38%
    high materiality
    High
    Non-GAAP Gross Margin (Transceiver)
    More than 40%
    high materiality
    High
    Non-GAAP Profitability
    Achieved
    high materiality
    High
    800G Firmware Optimization Completion
    Completed
    high materiality
    High
    Texas Facility Qualification
    Full qualification
    medium materiality
    High

    Segment performance

    5
    SegmentRevenueYoYQoQMargin
    Total Company
    Record revenue for Q4 FY25, in line with guidance range of $125 million to $140 million. Total revenue for FY25 was $456 million, an 83% increase compared to FY24.
    		$134.3 million34%13%—
    Data Center
    Strong performance driven by robust demand, particularly in 400G products. One U.S.-based large hyperscale customer became a 10% customer for the first time in a long time.
    FY25 Revenue: $196 millionFY25 Growth YoY: 32%100G Products Sales YoY: 54%400G Products Sales YoY: 141%Q4 FY25 Revenue Mix - 100G: 51%Q4 FY25 Revenue Mix - 200G and 400G: 41%Q4 FY25 Revenue Mix - 10G and 40G: 8%
    		$74.9 million69%70%—
    CATV
    In line with expectations, with significant quantity of 1.8 gigahertz amplifiers shipped to largest customer. Continued momentum from a new set of MSO customers.
    FY25 Revenue: $245 millionFY25 Growth YoY: Nearly tripled
    		$54 million3%-24%—
    Telecom
    Telecom sales are expected to fluctuate quarter-to-quarter.
    		$5.1 million45%37%—
    FTTH, Telecom and Other
    Represents the remaining portion of total revenue.
    Q4 FY25 Revenue Share: 4%
    		————

    Operational metrics

    19
    Non-GAAP Gross Margin
    31.4%Up from 31% in Q3 FY25 and 28.9% in Q4 FY24
    Q4 FY25

    Above the high end of guidance range of 29% to 31%.

    Non-GAAP Operating Expenses
    $49.3 millionUp from $31.5 million in Q4 FY24
    Q4 FY25

    In line with expectations of $48 million to $50 million.

    Non-GAAP Operating Loss
    $7.1 millionCompared to $2.5 million loss in Q4 FY24
    Q4 FY25

    Reported for the fourth quarter.

    Non-GAAP Net Loss
    $0.6 millionCompared to $1 million loss in Q4 FY24
    Q4 FY25

    Reported for the fourth quarter.

    Non-GAAP EPS
    $0.01Narrower than guidance range of $0.13 to $0.04 loss; compared to $0.02 loss in Q4 FY24
    Q4 FY25

    Reported as a loss per share.

    Basic Shares Outstanding
    70.3 million
    Q4 FY25

    Used for computing earnings per share in Q4 FY25.

    Cash and investments balance
    $216 millionUp from $150.7 million at end of Q3 FY25
    End of Q4 FY25

    Balance sheet item at quarter end.

    Total Debt (excluding convertible)
    $67.3 millionUp from $62 million at end of Q3 FY25
    End of Q4 FY25

    Balance sheet item at quarter end.

    Inventory
    $183.1 millionUp from $170.2 million at end of Q3 FY25
    End of Q4 FY25

    Balance sheet item at quarter end.

    Capital Investments (Capex)
    $84 million
    Q4 FY25

    Total capital investments made in the fourth quarter.

    Capital Investments (Capex)
    $209 millionAbove projections of $120 million to $150 million
    FY25

    Total capital investments made for the full year.

    Tariff Impact on Income Statement
    $1.2 million
    Q4 FY25

    Direct tariffs had an impact on the income statement.

    Tariff Impact on Capital Equipment
    $3.1 million
    Q4 FY25

    Direct tariffs had an impact on capital equipment.

    Total Tariffs Incurred
    $7 million-$8 million
    FY25

    Overall tariffs paid, with a portion potentially recoupable due to court decisions on IEEPA tariffs.

    Contra Revenue (Warrants)
    $0.73 million
    Q4 FY25

    Amount due to accounting for warrants provided to customers in exchange for future revenue.

    Top 10 Customers Revenue Contribution
    96%Compared to 97% in Q4 FY24
    Q4 FY25

    Revenue concentration from the top 10 customers.

    Greater than 10% Customers
    3
    Q4 FY25

    One of the data center customers became a 10% customer for the first time in a long time and is a U.S.-based large hyperscale customer.

    800G Production Capacity
    ~90,000 units per month
    Year-end FY25

    Nearing target of 100,000 units per month.

    Data Center Revenue (FY26 target)
    $700 million
    FY26

    Estimated portion of the $1 billion FY26 total revenue target.

    Industry KPIs

    7
    MetricValueDetails
    Backlog order bookForecast demand for 800G modules are projected to exceed our production capacities
    Orders backlog qualityForecast demand for 800G modules are projected to exceed our production capacities
    Product orders order growth>$100 millionUSD
    Ai cloud infrastructure orders>$100 million for 800G, >$200 million for 1.6TUSD
    Recurring software service revenueSome revenue
    Revenue mix by product customer type56% Data Center, 40% CATV, 4% FTTH/Telecom/Other%
    Design wins product cycle transitionsFourth 800G volume order

    Orderbook & backlog

    3
    800G/1.6T Forecast DemandExceeds production capacitiesQ4 FY25

    Projected to exceed production capacities through mid-2027.

    800G Transceiver Orders>$100 millionWithin a few months (expected)

    Expected from at least 2 customers, potentially within 1-3 months.

    1.6T Transceiver Orders>$200 millionWithin a few months (expected)

    Expected from at least 2 customers, potentially within 1-3 months.

    Product announcements

    2
    ProductTypeDetails
    800G Transceiversmilestone
    1.6T Productsroadmap

    Capital programs

    2
    New Facility in Sugar Land, Texasunderway
    Start: February 2026

    Benefit: Expand U.S. production capacity for 800G/1.6T products.

    Signed an agreement to lease an additional building. Construction began earlier this month to scale production towards achieving 2026 targets.

    Laser Manufacturing Capacity Expansion in Texasplanned$300 million

    Benefit: More than triple laser manufacturing capacity.

    Investment to fulfill transceiver demand, especially for 800G and 1.6T, as current demand is much larger than projected capacity.

    Risks & headwinds

    4
    800G Firmware Optimization DelayQ4 FY25, resolution expected March 2026

    800G revenue came in below expectations of $4 million-$10 million in Q4 FY25.

    Mitigation: Working with customer to finalize firmware for interoperability; ramping production in anticipation of Q2 FY26 volume.

    Tariff ImpactQ4 FY25 and ongoing

    $1.2 million impact on income statement in Q4 FY25; $3.1 million impact on capital equipment in Q4 FY25; $7 million-$8 million total tariffs in FY25.

    Mitigation: Reducing China-sourced component exposure to near 0 for 800G/1.6T designs; scaling U.S. production; analyzing potential to recoup IEEPA tariffs.

    Capacity LimitationsFY26 through mid-2027

    FY26 revenue target of over $1 billion is limited by production capacity and supply chain, not market demand (which is 'much larger'). Forecast demand for 800G modules projected to exceed production capacity through mid-2027.

    Mitigation: Materially expanded manufacturing capacity; adding additional capacity in Texas; tripling laser manufacturing capacity.

    Longer U.S. Capacity Build-outOngoing

    N/A

    Mitigation: Strategic investment in Texas, with a long-term goal of over 55% of 800G/1.6T manufacturing in the U.S. by end of FY27, despite longer build times and higher costs.

    What to watch in Q1 FY26

    5

    800G Revenue Ramp

    Q2 FY26
    CurrentBelow $4 million in Q4 FY25
    TargetDominant revenue contributor in Data Center, >$25 million-$30 million

    Why it matters

    Verifies successful firmware optimization and the start of significant AI-driven revenue growth.

    although 800G is expected to dominate our revenue beginning in Q2.

    Q&A highlights

    8

    Clarification on the exact 800G revenue figure for Q4 FY25, given it was below expectations.

    Management stated 800G revenue was below $4 million, with the delay due to firmware optimization, pushing the significant ramp to Q2 FY26. Thompson Lin clarified that the $378 million monthly revenue target is for Q2 FY27, not Q2 FY26.

    “We didn't break out exactly, but it was below $4 million.”

    asked by Simon Leopold · answered by Stefan Murry

    2 min read6 chapters

    Detailed Narrative

    01

    Strategic Priorities and Progress

    Applied Optoelectronics focused on scaling next-generation data center products (400G/800G), expanding production capacity (especially in Texas), diversifying its revenue base, and strengthening operational execution to improve margins and long-term profitability in FY25. The company reported significant progress on each of these fronts, and these areas will remain key priorities for FY26.

    02

    800G and 1.6T Product Roadmap

    The company received its fourth 800G volume order from a major hyperscale customer for AI data center growth, with a strong ramp anticipated starting Q2 FY26. Forecast demand for 800G modules is projected to exceed production capacity through mid-2027. New hyperscale customers are engaging for 800G and 1.6T products, with 1.6T expected to begin contributing to overall revenue later in FY26.

    03

    Manufacturing Capacity Expansion

    AOI has materially expanded its manufacturing capacity, reaching approximately 90,000 units per month of 800G capacity by year-end FY25, with about 31% of that production based in the U.S. An additional building in Sugar Land, Texas, is under construction to support the target of producing over 500,000 pieces of 800G and 1.6T products per month by the end of FY26, with a significant portion from Texas. By the end of FY27, over 55% of 800G/1.6T manufacturing is expected to be in the U.S.

    04

    In-House Laser Capabilities

    AOI's in-house laser manufacturing capabilities are considered a strategic advantage, helping the company avoid shortages that affect others in the industry. The company plans to invest $300 million to more than triple its laser manufacturing capacity in Texas by mid-2027 to support future growth drivers like CPO and accommodate the increasing demand for transceivers.

    05

    CATV Business Momentum

    The CATV segment demonstrated robust demand for 1.8 gigahertz amplifiers from its largest customer and continued momentum from a new set of MSO customers. The company's QuantumLink software suite is designed to provide enhanced remote management and control over HFC network elements, and it is anticipated to generate some revenue in FY26, contributing to the segment's potential to reach nearly $300 million annually.

    06

    Tariff Impact and Mitigation

    Direct tariffs had a $1.2 million impact on AOI's income statement in Q4 FY25 and $3.1 million on capital equipment. The company is actively reducing its exposure to China-sourced components for 800G/1.6T products to near zero and is scaling U.S. production to minimize future tariff impact🌐s. AOI is also exploring the potential to recoup approximately $4.6 million in IEEPA-related tariffs from Q4 FY25, part of an estimated $7 million-$8 million in total tariffs for FY25.

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