Applied Optoelectronics, Inc. (AAOI) | The Buildout — AI Infrastructure
The Verdict
Applied Optoelectronics makes fiber-optic transceivers — the pluggable modules used in the optical links that connect AI accelerators and the switches around them. It designs and manufactures the indium phosphide lasers inside those transceivers itself, at its Sugar Land, Texas facility, rather than buying them. Management's argument is that owning laser supply lets the company keep shipping transceivers when rivals are short of lasers, and that US manufacturing makes it a strategic supplier to hyperscalers. Alongside the data center business it sells into cable television, telecom and fiber-to-the-home, which are not AI-linked on these calls.
| Market Cap | — |
| Revenue (TTM) | $596M |
| Revenue Growth | +61.8% |
| EBITDA Margin (TTM) | -5.4% |
| Net Cash | $235M |
| Earnings Beats | 3 of 7 |
| P/E (TTM) | — |
| EV/EBITDA (TTM) | — |
What We Like
- Data center revenue was $107.7M in Q2 2026, up 140.4% year over year and 32.3% sequentially, and is now 56% of total revenue — the larger and faster-growing of the two main segments.
- 800G transceiver revenue was $12.8M in Q2 2026, more than 10x year over year, and management guides it to grow nearly 5x again in Q3 2026.
- Management raised the end-2026 capacity target to more than 650,000 units a month and end-2027 to more than 930,000, with over half of 2027 output coming from Texas.
- Q2 2026 marked the first return to non-GAAP profitability, with non-GAAP EPS of $0.06 against a guided range of -$0.03 to +$0.03.
- A 1.6T volume order of more than $200 million is in hand from a long-term hyperscale customer, with qualification described as in its late stage.
What We’re Watching
- The end-2026 gross-margin exit target was cut from 35% to 32-33%, and the 40%-plus path now depends on co-packaged optics margins that management places in Q3 or Q4 2027.
- A customer's shortage of 100G switches, tied to memory supply, is expected to cut $20M-$25M of Q3 2026 revenue; management expects the weakness to persist until memory supply recovers.
- Q4 2026 1.6T revenue was given two different ways on the same call — 'more than $17 million' and '$70 million to $80 million' — a gap that reported results would settle.
- Top 10 customers were 99% of Q2 2026 revenue, and Digicomm was approximately 74.5% of accounts receivable at March 31, 2026 under longer than typical payment terms.
The volume side of the case is strengthening: revenue has set records in five consecutive quarters, data center is now the majority of the business, and the capacity and mid-2027 revenue targets were raised in Q1 2026 and maintained in Q2. The profit side is weaker: the gross-margin exit target was cut, the more than $140 million full-year operating-income target was not restated, and the higher-margin co-packaged optics layer slipped from 2027 to 2028. The open question is whether the mix shift to 1.6T, and later to co-packaged optics, lifts gross margin before the cost of financing this build becomes the constraint.
Earnings
Q2 2026 revenue was $191.9M, up 86% year over year and 27% sequentially, in line with guidance of $180M-$198M. Non-GAAP gross margin was 29.8%, in line with the guided 29%-30%, and non-GAAP EPS was $0.06 against a guided range of -$0.03 to +$0.03. Management described the quarter as a return to non-GAAP profitability; the GAAP net loss was $22.8M, or $0.28 per basic share.
| Metric | Q2 FY2026 | Q1 FY2026 | Q2 FY2025 | YoY |
|---|---|---|---|---|
| Revenue | $192M | $151M | $103M | +86.3% |
| Gross margin | 27.7% | 29.1% | 30.3% | -260bps |
| EBITDA | −$14M | −$4M | −$10M | +47.9% |
| EPS | $-0.28 | $-0.19 | $-0.16 | +74.4% |
| 800G transceiver revenue | $12.8M | $4.6M | n/a | >10x YoY |
| Data center segment revenue | $107.7M | $81.4M | n/a | +140.4% YoY |
Demand to support next generation AI infrastructure remains so robust that our near term revenue is bounded almost entirely by production capacity and key component availability.— Chih-Hsiang "Thompson" Lin, Chief Executive Officer, 2026-08-06
Management tone: Management stayed confident and direct on the core ramp and candid about the near-term shortfall. Three shifts versus the Q1 2026 call are visible. Near-term ramp language softened: the Q3 guide came in below prior commentary of a 60% to 80% sequential increase, with a $20M-$25M 100G decline given as the reason. Full-year language moved from 'exceed $1.1 billion' to 'around $1.1 billion,' and the more than $140 million operating-income target was not repeated. The gross-margin exit target moved from 35% to 32-33%. On questions about a potential US transceiver ban and contract-manufacturer competition, management reframed rather than quantified, and it disclosed that the Q2 EPS beat was helped by foreign tax benefits and government subsidy income.
Management Guidance
Q3 2026 revenue is guided to $255M-$290M, about 130% year-over-year growth at the midpoint, with non-GAAP gross margin of 29%-30.5% and non-GAAP EPS of $0.11-$0.26 on roughly 92.8M diluted shares. Management guides full-year 2026 revenue to 'around $1.1 billion,' softened from 'exceed $1.1 billion' on the prior call, and did not repeat the earlier target of more than $140 million in non-GAAP operating income. Non-GAAP operating expenses are guided to $70M-$80M per quarter. CATV is guided to $100M-$110M in Q3 with a run-rate above $325 million annually. The Q3 guide is held back by an expected $20M-$25M decline in 100G revenue, attributed to one customer's inability to source sufficient 100G switches amid a memory shortage.
Trajectory
Revenue has set records in five consecutive quarters, from $103.0M in Q2 FY2025 to $191.9M in Q2 FY2026, with the year-over-year rate at 86% in the latest quarter. Gross margin has not followed: 30.3% in Q2 FY2025, 29.1% in Q1 FY2026, and 27.7% GAAP (29.8% non-GAAP) in Q2 FY2026. The company attributes the compression to running below optimal production efficiency while building capacity that has not yet produced revenue — Q1 cost of goods sold rose $37.9M, or 54.7% year over year, on higher direct material, direct labor and depreciation. The revenue driver is the data center ramp in 400G and 800G; the margin step is deferred to 1.6T and then co-packaged optics. Recurring free cash outflow has funded the build: free cash flow was -$265.3M in Q2 FY2026.
The Model
The model projects FY+1 revenue of $1,101M with EBITDA of $70M (6.4%), and FY+2 revenue of $4,000M with EBITDA of $900M (22.5%). The near-term anchor is the capacity ramp management has guided to more than 650,000 units a month by end-2026 and the 1.6T order already in hand; the FY+2 figure rests on the mid-2027 target of roughly $471M a month of data center transceiver revenue, where 800G would be about $217M and 1.6T about $164M monthly. The five runs behind the FY+2 number span $3,200M to $5,000M, a 45% spread.
| Metric | FY2025 | Next FY (E) | Following FY (E) |
|---|---|---|---|
| Revenue | $456M | $1.1B | $4.0B |
| YoY Growth | — | +141.6% | +263.3% |
| EBITDA | −$27M | $70M | $900M |
| EBITDA Margin | -5.9% | 6.4% | 22.5% |
Projections are the median of 5 independent model runs.
Q3 2026 revenue is guided to $255M-$290M, about 130% year-over-year growth at the midpoint, with non-GAAP gross margin of 29%-30.5% and non-GAAP EPS of $0.11-$0.26 on roughly 92.8M diluted shares. Management guides full-year 2026 revenue to 'around $1.1 billion,' softened from 'exceed $1.1 billion' on the prior call, and did not repeat the earlier target of more than $140 million in non-GAAP operating income. Non-GAAP operating expenses are guided to $70M-$80M per quarter. CATV is guided to $100M-$110M in Q3 with a run-rate above $325 million annually. The Q3 guide is held back by an expected $20M-$25M decline in 100G revenue, attributed to one customer's inability to source sufficient 100G switches amid a memory shortage.
What Could Go Right — and Wrong
- 1.6T qualification completes with the long-term hyperscale customer, shipments begin later in Q3 2026, and the bulk lands in Q4 as management describes.
- The mix shift to 1.6T, which management calls a high gross-margin product, moves company gross margin toward the roughly 40% long-term target.
- One or more of the three long-term agreements under negotiation for lasers and External Laser Source Pluggable modules signs with terms disclosed.
- Co-packaged optics and ELSFP modules reach production at the stated 55-65% and above-50% gross margins.
- A formal US restriction on imported transceivers converts management's expectation of share gains into orders, against capacity booked through Q2 2027.
- The 1.6T ramp slips again; delivery has already moved from complete-by-end-2026 to a Q4-weighted ramp with a tail into Q1 2027.
- DSP and TIA component supply stays tight and caps the 800G and 1.6T ramp — the constraint management names as binding.
- The memory-driven 100G shortfall persists beyond the few months management expects, holding the Q3 guide down further.
- Gross margin fails to move as 1.6T mixes in, or supplier fees persist, leaving the 40% target dependent on co-packaged optics that already slipped from 2027 to 2028.
- Digicomm's channel or credit health deteriorates; it was approximately 44.1% of Q1 2026 revenue and approximately 74.5% of accounts receivable at March 31, 2026.
Looking Ahead
The next twelve months turn on execution rather than demand. The gating items are whether the 1.6T order qualifies and ships on the stated schedule, whether the capacity build reaches more than 650,000 units a month by end-2026, and whether gross margin moves off the high 20s. Management pointed to a Q4 2026 revenue level of possibly more than $500 million and reaffirmed a mid-2027 data center transceiver revenue target of roughly $471M a month. The recurring caution is that the binding constraints — DSP and TIA components and 1.6T materials — sit outside the company's control.
- Q3 20261.6T qualification — Late-stage qualification with the long-term hyperscale customer, expected within weeks of Aug 6.
- Q3 2026First 1.6T shipments — Shipments begin later in Q3, from an order of more than $200M already in hand.
- Q3 2026Q3 2026 earnings call — Tests the Q3 revenue guide and the nearly 5x 800G target.
- Q4 2026Q4 1.6T revenue — Settles the 'more than $17M' versus '$70M-$80M' gap from the same call.
- End 2026Capacity >650k/month — Verifies the target of more than 650,000 units a month, about 30% from Texas.
- Mid-2027Data center revenue target — About $471M a month projected, with 800G and 1.6T roughly 81% of it.
Financials
Annual Summary
| Metric | FY2024 | FY2025 | TTM | YoY |
|---|---|---|---|---|
| Revenue | $250M | $456M | $596M | +82.7% |
| Gross Margin | 23.5% | 30.0% | 28.9% | +655bps |
| EBITDA | −$50M | −$27M | −$32M | +46.5% |
| EBITDA Margin | -20.2% | -5.9% | -5.4% | +1,426bps |
| Net Income | −$187M | −$38M | −$57M | +79.6% |
| Free Cash Flow | −$113M | −$175M | −$413M | — |
| Net Cash | — | — | — | — |
Key Ratios (Trailing)
- P/E TTM—
- EV/EBITDA TTM—
- EV/Revenue TTM—
- Price/FCF TTM—
- Gross Margin (TTM)28.9%
- EBITDA Margin (TTM)-5.4%
- Net Margin (TTM)-9.6%
- ROIC-3.7%
- SBC / Revenue-2.8%
The Company
Applied Optoelectronics designs and manufactures fiber-optic networking products for four end-markets: internet data center, cable television, telecommunications and fiber-to-the-home. The 10-K describes a range of optical communications products at varying levels of integration, from components, subassemblies and modules to complete turn-key equipment. The data center segment sells optical transceivers and light engines to hyperscale data center operators and equipment suppliers. The cable television segment, the company's oldest business, supplies lasers, transmitters, transceivers and turn-key equipment and has sold directly to cable operators under the Quantum Bandwidth brand since 2023. Telecom supplies lasers and laser subassemblies, primarily for 5G, and FTTH supplies transceivers for passive optical network deployments.
The company is vertically integrated. It makes its own indium phosphide lasers — the light source inside every transceiver — and all laser chips are manufactured at the Sugar Land, Texas facility. Management says most of its production equipment is developed in house, which it describes as insulating the company from equipment supply bottlenecks. Manufacturing runs across three Taiwan facilities totaling 795 thousand square feet, a 1.2 million square foot Ningbo, China plant dedicated mainly to transceivers and cable TV equipment, and a Texas footprint management said exceeded 1.6 million square feet in the greater Houston area on the Q2 2026 call, up from about 65 thousand square feet a year earlier. The FY2025 10-K still lists three manufacturing sites, a snapshot the calls show is out of date.
Business Segments
Competitive Landscape
The 10-K lists major competitors across its markets including Coherent, Eoptolink, Foxconn Interconnect, InnoLight, Intel, Lumentum, Mitsubishi, Molex, Source Photonics and Sumitomo Electric. Management's differentiation argument rests on two claims: that it makes its own indium phosphide lasers while rivals do not, and that its US manufacturing footprint is an advantage, which Murry called probably the most important element of its appeal to customers. Asked about contract manufacturers building transceivers directly for hyperscalers, management said it did not really know the competitive or margin impact and answered with the laser barrier instead. Neighbor transcripts in the material complicate that picture: Coherent and Lumentum are also vertically integrated in indium phosphide with faster scaling and gross margins of 39.6% and 47.9%, against AAOI's 29.8% non-GAAP.
- Coherent CorporationNamed in the 10-K as a major competitor. Evidence-pack neighbor data shows it is also vertically integrated in indium phosphide, is doubling that capacity and more than doubling again by end-2027, and reported gross margin of 39.6%.
- Lumentum Holdings, Inc.Named in the 10-K as a major competitor. Neighbor data shows gross margin of 47.9% and the acquisition of a fifth indium phosphide fab, and it is ramping 1.6T with internal continuous-wave lasers.
- Named in the 10-K as a major competitor. Neighbor data notes severe industry supply constraints across leading-edge logic, memory and substrates.
- InnoLight Technology (Suzhou) Ltd.Named in the 10-K as a major competitor; not discussed further in the material.
- Eoptolink Technology Inc., Ltd.Named in the 10-K as a major competitor; not discussed further in the material.
Supply Chain
AAOI sits upstream in the optical-interconnect chain. It buys indium phosphide substrates and DSP and TIA chips, makes its own lasers, and sells transceivers to a handful of hyperscalers and one large cable distributor. No neighbor transcript in the material names the company.
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