Applied Optoelectronics (AOI) (NASDAQ: AAOI) is a lesser-known optical component and transceiver supplier. The small-cap has recently caught our attention for its hyperscaler deals and its ambitious capacity growth targets, aiming to become one of the largest domestic manufacturers for 800G transceivers.
The VSCEL laser, EML chip, and optical transceiver supplier has provided some of the strongest commentary for future growth, with management outlining 8.5x capacity growth by year-end and substantial capacity growth in 2026. This builds upon a comment slipped into Q1’s call that AOI believes it can become the largest 800G/1.6T optics supplier to Amazon, after signing a deal in March that management says is worth more than $4 billion over ten years.
AOI also stood out from its 40% QoQ growth in data center revenue in Q2, though this came after a soft Q1 affected by inventory digestion at its largest hyperscale customer and seasonality. Interestingly, data center was not the core driver of growth in Q2, with cable TV taking the reins with 8x YoY growth in the quarter. Cable TV is expected to provide an additional lever of growth come 2026, with management tentatively outlining early visibility into $300M+ in demand.
The crux with AOI is that cash flows are much softer than more-established AI networking stocks, and GAAP margins are still negative. However, it’s hard to argue with the implications from the profound expansion in capacity and how optics growth can transform margins.
Plotting Out the Optical Opportunity
Here’s a quick recap from our first thematic coverage on optical interconnects from over a year ago and why optical components would become a necessity as AI workloads rise.
Copper had long been standard for data center interconnects, but it cannot support network speeds of 800 gigabits (800G) to 1.6 terabits (1.6T) over long distances due to substantial signal loss. This isn’t to say copper is dead – Nvidia’s GB200 NVL72 utilized copper over optics (with more than 2 miles of copper cabling in the rack) to reduce power consumption by 20 kw (the system still draws 120kw of power). According to a representative from Marvell’s Cloud Optics division, “optical is the only technology that can give you the bandwidth and reach needed to connect hundreds and thousands and tens of thousands of servers across the whole data center.”
Optical transceivers are crucial in enabling high-speed data transfer, by transmitting and receiving data from optical (light) signals to electrical signals. In data centers, optical interconnects and transceivers are becoming the de facto standard to handle AI workloads, since they can function at significantly higher speeds than copper (currently at 800G+ speeds and moving quickly to 1.6T), with longer range, higher data capacity, and lower latency with minimal signal loss. One drawback, however, is that due to the electronic complexity of optical products, costs are higher as well as power consumption versus copper.
To read the full analysis on optical interconnects, click here.
Major optics manufacturer Innolight reportedly raised its forecast for global 800G unit shipments by 50%, now seeing 15 million shipments globally for 2025, up from 10 million previously. Other reports out of China were more optimistic, with one firm projecting >16 million 800G shipments this year with 1.6T demand exceeding 5 million units, and another projecting demand for 17 million 800G and 4 million 1.6T units. FS had placed a rough estimate of 5 million shipments for 800G products in 2024, so these projections would represent >3X growth YoY if they come to fruition.
Nvidia’s math also aligns with the upper end of those demand scenarios for >800G transceivers for scale-out connectivity, with the GPU leader claiming a 1:6 GPU-to-transceiver ratio for 100K 4-GPU servers. Nvidia states that this scenario, with 400K total GPUs, would require 2.4 million transceivers.
Nvidia estimates that optical module requirements for scale-out networks may be at a ratio 1:6 per GPU. Source: Nvidia via The Next Platform
While a majority of Nvidia’s shipments are likely to focus on the 72-GPU rack-scale solutions rather than smaller servers, a rough estimate for 750,000 servers, or 3 million GPUs (less than half of Nvidia’s estimated 2025 unit shipments), would project 18 million in transceiver demand solely to meet Nvidia’s needs.
For intra-rack connections for the GB200 NVL72, reports suggest that “the ratio of GPUs to 1.6T optical transceivers is 1:2 in the dual-layer InfiniBand network and 1:3 in the three-layer InfiniBand network. Compared to the DGX H100, the NVIDIA GB200 NVL72 architecture doubles the port speed for servers and switches, significantly advancing the adoption of 1.6T transceivers and increasing the need for the 1.6T network.” Assuming roughly 30,000 NVL72 units in demand, this would project to between 4.32 million to 6.48 million 1.6T transceivers for intra-rack connections.
AOI Targeting 8.5X Capacity Growth for 800G/1.6T Products by Year-end
At OFC in April, AOI outlined one of the most impressive capacity expansion stats that we have seen: an 8.5x increase for 800G and 1.6T products by the end of the year, with management reaffirming in both Q1 and Q2 that they remain on track to reach said target. Capacity for these high-speed products is split between two facilities, one in Taipei, Taiwan and the other in Sugar Land, Texas. Overlaying potential 3x growth industry this year with 8.5x capacity growth for AOI implies the company is eyeing market share gains into year end persisting through 2026.
Below is how AOI’s management is charting out the growth in capacity, with consistent monthly expansion taking it to its 8.5x target:
Capacity growth figures are relative to a March 2025 baseline for Taiwan production and a September 2025 baseline for Texas production. Source: AOIAOI
Note that these figures are cumulative, meaning that AOI is essentially targeting 2.35x more capacity by June from its March baseline in Taiwan for its 800G 2xFR4/DR8 product, before scaling to 3.65x by August and so forth. This is also the case in Texas, where AOI is targeting the start of production in September (100%), before scaling 4x by December. Equipment that was ordered in Q1 was said to be arriving as of Q2, further supporting this expansion effort.
Putting this in perspective, the 8.5x growth is targeting approximately 100K monthly capacity globally of 800G/1.6T products by year-end, according to management. This suggests that capacity earlier in 2025 was roughly 12K per month. AOI expects ~40% of 800G production to be domestic at its Texas facility, which they believe will make them one of the largest domestic manufacturers. More importantly, AOI says they can accommodate this expansion under its current facility footprint, saving on capex.
Management Eyeing 2X Growth in 2026
If 8.5X growth was not enough, AOI is going further and aiming to double capacity again by mid-2026, stating in Q2’s call that they are expecting to be able to produce >200K 800G/1.6T products per month, with the majority produced in Texas. This corresponds to annual production of ~2.4 million 800G/1.6T products, up more than 16x from less than 150K annually prior to these expansion plans. Compared to market leaders Innolight and Eoptolink, where monthly capacity is estimated at 500K and 300K units respectively (for annual capacity of ~9.6M), AOI still lags but is quickly catching up. The company believes it holds an advantage from its vertically-integrated model with in-house laser and subassembly manufacturing, along with substantial factory automation that allow it to quickly ramp capacity to this degree.
Based on Nvidia’s calculations, AAOI alone may be able to support 400K GPU shipments at full capacity, or more than 5% of UBS’ estimate for Nvidia’s GPU shipments of 7.4 million next year. More importantly, none of this capacity so far, not even the 8.5X growth, has translated into revenue, with 800G contribution immaterial to revenue as of Q2 as products remain in the qualification stage.
While pricing is unknown, an analyst had questioned management about the ramp of 800G/1.6T products in Q1 and penciled in $0.75/gig: “But I guess rough math, yeah, $0.75 a gig, that would be well over $100 million in a quarter. Am I doing something wrong in that thinking?” The question was quickly shot down by management, yet assuming pricing at this degree as the market becomes more competitive through 2026 provides an interesting look into the potential growth ahead for AOI.
Assuming by Q3, AOI is operating at max capacity of 200,000 pieces per month, with 80% of those being 800G and 20% 1.6T. This would roughly project ~$96 million monthly revenue for 800G products and ~$48 million monthly revenue for 1.6T products, assuming capacity is sold out.
On a quarterly basis, this would be north of $430 million in quarterly revenue simply from >800G products, not including 400G or cable TV, already more than double current consensus estimates for $194 million in Q3 and $217 million in Q4.
More Clarity on 800G Ramp, 1.6T
Considering the combination of commentary for >16X capacity growth for 800G and 1.6T products in just one year and the fact that the opportunity is squarely ahead, tracking the timing and scale of this revenue ramp is critical. Based on commentary from Q2, 800G accounted for, at maximum, 1% of data center revenue, considering shipments were only for qualification purposes.
Management said that they “continue to believe that we will produce meaningful shipments of 800G products sometime in the second half of 2025, likely in late Q3 or Q4. The schedule is constrained by our ability to build and qualify production capacity. We believe that the demand for 800G is strong, and we expect that when our production is ready, we will see a fairly quick ramp in revenue for 800G.”
The timing of the ramp comes down to two factors: AOI has to have meaningful production capacity available in order to quickly shift to volume production, and also wait for its prospective customers to finish production qualification. October and November are expected to see larger jumps in production capacity, with Taiwan capacity rising from 5x to 8.3x, and Texas up to 3x from its baseline, suggesting the ramp is imminent yet pending the conclusion of qualification.
AOI believes that one of its major hyperscale customers is in the final stages for securing 800G qualification, having recently audited and approved AOI’s Taiwan factory for 800G production. This adds an additional layer of confidence that the revenue ramp for 800G is near, as management expects that this customer could become a >10% customer in Q3.
For 1.6T, AOI expects to kick off volume manufacturing around June to July 2026, noting that it is already working with several customers and expects to have a minimum of three tier 1 customers. All three are pre-existing customers, so this could include Microsoft, Amazon or possibly even Oracle.
Another reason that the ramp of 800G and 1.6T is important is tied to margins: management explained that for 1.6T, gross margins should be above 40%, while 800G margins should be close to 40%. As discussed further below in the Financials section, AOI’s current gross margin is hovering at 30%, meaning a strong ramp for these products will drive gross and likely operating and net margins higher – management has guided for 35% to 40% gross margins by the end of 2026 and these products will be crucial to reach that.
$4 Billion, 10-Year Amazon Deal Requires >$400M Annual Scale
AOI shares surged in early March when the company announced that it signed a 10-year supply deal with an Amazon subsidiary, widely understood to be AWS, while offering the company warrants for 7.94 million shares.
This is not AOI’s first long-term agreement with a major hyperscaler for data center products – the company signed a five-year supply agreement with Microsoft in 2023 for >400G products through 2028, and expects revenue from this contract to increase in 2025 relative to 2024. Terms for the Microsoft deal were not disclosed.
AOI has disclosed additional details about the Amazon deal: 1.32 million shares vested upon the signing of the agreement, but the remaining 6.62 million shares may vest over the next 10 years “dependent on aggregate purchases by Amazon of $4 billion of our products over this time period.” CEO Thompson Li said in Q1 that he believes the deal could be “much more than $4 billion in the next 10 years.” This would correspond to annual revenue on average of at least $400 million solely from Amazon.
Q2 had quite an interesting snippet from management regarding the deal:
“Our belief, our expectation, is that we can grow to be, the largest supplier of 800G and faster, higher data rate optics for Amazon. Now, that's not guaranteed by any means, but I don't see any reason why we couldn't be there. And that would imply a market share; typically, they're going to have two or three suppliers, so that would be, maybe 30, maybe even up to 40%.”
This quote is very important as it indicates the Amazon deal could create a long-term, high-volume customer contributing hundreds of millions in annual revenue, it also signals product validation from an industry leader and could lead to future supply deals, assuming capacity supports it.
Significant Customer Concentration a Risk to Consider
AOI exhibits a higher degree of risk related to its significant customer concentration, with its top ten customers accounting for 98% of revenue in Q2, a slight increase from 94% in the year ago quarter.
AOI’s largest customer was in its CATV segment, contributing 54% of total revenue, while its second largest customer was in its data center segment and contributed 34% of total revenue. These two customers alone, likely Digicomm and Microsoft based on prior revenue trends, combined for 88% of revenue. As mentioned previously, management believes they could have a third >10% customer in Q3, a major hyperscaler for 400G and 800G products.
Oracle was previously a >10% customer as recently as 2024, contributing 12.4% of total revenue last year, up from 8.8% in 2023. Microsoft had contributed nearly 44% of revenue as AOI’s largest singular customer in 2024, while Digicomm accounted for 34%, suggesting the recent growth in CATV has swapped its position.
High China Revenue Concentration
AOI has elevated China revenue exposure, which raises risk considering that geopolitical tensions are flaring up again. In Q2, China contributed $62.4 million in revenue, up 403% YoY and accounting for nearly 61% of revenue, with this likely driven by the growth in cable TV. Taiwan revenue was $39.5 million, up 37% YoY to 38% of revenue.
On the other hand, AOI is aiming to reduce its China content in its transceivers to near zero as they scale production, with current China content at <10% for its 800G and 1.6T products. AOI says that a majority of its key components for these products, such as laser chips, are already manufactured in the US.
Financials
Revenue
AOI reported revenue of $102.95 million in Q2, up 138% YoY and 3% QoQ, representing a modest (2.7%) miss versus consensus estimates. This was a slight deceleration from 146% growth in the previous quarter. Cable TV was the primary growth driver with revenue up 862% YoY to $56 million, while data center revenue rose 30% YoY to $44.8 million.
For Q3, AOI guided for revenue to be between $115 million to $127 million, pointing to 86% YoY growth at midpoint, though on a sequential basis this is a sharp uptick to 17% QoQ growth. Management expects that there may be some initial contribution from 800G modules late in the quarter: “Looking ahead to Q3, we expect a sequential increase in our datacenter revenue, driven by continued growth in our 100G and 400G products with the possibility of layering some additional increased 800G revenue late in the quarter.”
For fiscal 2025, revenue is currently projected to be $467.3 million, up 87.4% YoY, before slowing to 55.9% growth in fiscal 2026 to $728.4 million. However, there is potential that the 800G and 1.6T capacity ramp meaningfully accelerates AOI’s run rate by the end of 2026.
Key Segments:
CATV (Cable Television)
As noted above, CATV revenue in Q2 was up 862% YoY but down (13%) QoQ from a record Q1, in line with management’s expectations as production was retooled for Motorola-style amplifiers. The YoY growth was driven by the ramp of its 1.8 GHz amplifiers.
AOI also finished testing and certified its Motorola- and GameMaker-style amplifiers for Charter Communications, who will deploy AOI’s 1.8 GHz amplifies and QuantumLink remote management software. For Q3, AOI expects CATV revenue to be record or near-record.
Data Center
For Q2, data center revenue was $44.8 million, up 30.4% YoY and 39.8% QoQ. The QoQ increase comes after a (27.6%) QoQ decline in Q1 from inventory digestion at one of AOI’s largest hyperscaler customers and seasonality. Data center revenue has been lumpy so far, though growth is expected to pick up in Q3 and into Q4 as 400G ramps and 800G begins contributing.
- Revenue for 10/40G products rose 68% YoY and 26% QoQ to $4.0 million, or 10% of data center revenue
- Revenue for 100G products rose 25% YoY and 25% QoQ to $31.4 million, or 70% of data center revenue.
- Revenue for 200G/400G products rose 43% YoY and 180% QoQ to $8.9 million, or 20% of data center revenue. AOI also completed its first volume shipment for high-speed single-mode 400G transceivers to a recently re-engaged hyperscaler, with increased sequential demand from other hyperscalers arising in Q2.
Telecom
Telecom and other revenue was down (45%) YoY to $2.1 million. Management expects telecom revenue, which was $1.9 million, to fluctuate from quarter to quarter.
Margins
AOI is not the strongest on margins, with operating margin widening for a second consecutive quarter on increased expenditures related to customer qualification projects for 800G and 1.6T products.
AOI reported GAAP gross margin of 30.3%, up more than 8 points YoY but down 0.3 points QoQ. Adjusted gross margin was 30.4%, with management guiding this to be essentially flat next quarter at 30.3%. Management has a target of 35% to 40% by late 2026 to 2027, emphasizing that they will need a few quarters for higher-margin 800G and cost reduction efforts from shifting to larger wafers to be seen. In the near-term, the ramp of single-mode 400G transceivers, which carry higher ASPs and gross margins, may provide a tailwind for expansion.
GAAP operating margin was (15.5%), a notable improvement from over (60%) in the year ago quarter, but widening from (6.5%) in Q4 and (8.9%) in Q1. Adjusted operating margin as (10.5%), down from (4.8%) in Q1 but up from (37.6%) a year ago.
Net margin was (8.8%), improving from (9.2%) in Q1 and more than (60%) a year ago. Adjusted net margin was (8.6%), down from (0.9%) in Q1 but improving from (25.1%) a year ago. For Q3, management’s guide implies adjusted net margin improving to (3.3%) at midpoint.
EPS
AOI reported a ($0.16) loss per share in Q2, missing estimates for ($0.07), as net margin did not improve much sequentially. For Q3, AOI guided for ($0.03) to ($0.10), a decent sequential improvement, likely driven by the ramp in 400G and a potential rebound in operating margin
Looking ahead, AOI is expected to shift to GAAP profitability by Q4 and expand earnings through mid-2026, with current estimates pointing to $0.03 in Q4 and rising to $0.19 by Q2 ’26, driven by the ramp of 800G.
Cash
Cash flows are also quite weak, though this has been mostly from surging accounts receivables and capex to support capacity expansion, a solid signal for the upcoming 800G ramp in conjunction with management’s commentary.
Operating cash flow in Q2 was ($65.5 million), widening from ($50.9 million) in Q1 as inventories and accounts receivables surged, up $36 million and $40 million QoQ respectively. OCF margin was (63.6%), down from (4.6%) a year ago and (51%) in Q1.
Free cash flow was ($104.3 million), widening from ($87.2 million) in Q1. Capex for the quarter was $38.8 million as AOI is quickly purchasing equipment to meet its aggressive capacity expansion targets for year-end and mid-year 2026. Full-year capex guidance is $120 to $150 million in preparation for increased 400G, 800G and 1.6T production.
Inventories were $138.9 million, up more than $36 million from Q1, driven by raw material purchases for use in production over the next few months.
Accounts receivable were $211.5 million in Q2, up $40 million QoQ. Digicomm accounted for $171.6 million of these receivables, tied to upcoming cable TV growth: “We talked about the dynamics, because we wanted to get some of the cable TV products in particular into the country and ready to be staged, ready for customer acceptance, we have offered some extended payment terms to certain customers in that channel chain to be able to accommodate that additional amount of revenue so that it's here when the customers need it.”
Cash and equivalents totaled $87.2 million, while debt was $188.2 million. During Q2, AOI completed its ATM program and raised $98 million net of fees, which it will utilize for equipment and machinery for its capacity expansion in Taiwan and Texas.
Earnings Q&A:
Gross Margin Increase Driven by Wafer Sizing
A five to ten point expansion in gross margins from 30% to 35-40% in four to six quarters (end of 2026 to early 2027) is a tall task to achieve while greatly expanding production capacity, but management provided some insights into the different levers available to reach this target. First, a shift from 2-inch wafers to 3-inch wafers is expected to bring substantial cost savings, along with 800G products ramping and improvements in cable TV:
Q, Simon Leopold, Raymond James:
Where I was trying to go with the question was to try to get a better sense of one of the elements to help the gross margin move towards that long term of 40%. So what I was trying to tease out in this question was the degree that you're outsourcing today versus a change towards more vertical integration in the future as a lever for gross margin improvement. So maybe the question is off-base and maybe I'm going down the wrong path. More bluntly, what will help the gross margin improve?
A, CEO Thompson Lin:
“Yes. I think the key is wafer, okay? Right now, we are doing 2-inch wafer. But we're going to 3-inch wafers. The cost will reduce by, I don't know, 50%, 60%. Then we'll go to 4-inch wafer by end of next year. This is a major, much bigger cost savings than what you're talking about. I think right now, yes, we're only maybe using 30% to 40% of our lasers. We were using, I would say, 2/3 of AOI lasers, okay? It will depend on customer by customer [basis]. Some customers prefer all the AOI lasers. Some customers prefer 50-50, okay? So that's why it's different. But more importantly, the cost funnel of AOI lasers changed from 2-inch to 3-inch to 4-inch.”
Management added that they need a few quarters to see a bigger impact from 800G products, which will have gross margin near 40%, and increased software revenue mix in cable TV, such as the QuantumLink remote management software deployment with Charter Communications.
Cable TV Demand to Reach $300-350M
Though the data center opportunity is what we’re most interested in, AOI’s commentary on cable TV pointed to potential 40% growth in fiscal 2026. Management said they have a “pretty clear line of sight” into channel inventory and demand, which supports this confidence in reaching $300 to $350 million in cable TV revenue next year. For perspective, cable TV revenue is on a ~$240 to $260 million run rate with $120 million in revenue in 1H:
CEO Thompson Li:
“So right now, next year, we are very comfortable, besides Charter, we should have more than 10 customers next year. And right now, based on the feedback from this customer, I think the real demand from these customers next year is, I would say, minimum $300 million to $350 million. … But the demand is pretty big, all right? Just next year, that's the number we see right now, $300 million to $350 million of real demand, all right, for this customer in, I would say, U.S., Canada, all right?”
CW Laser Production Increasing
AOI has been rather quiet about CW lasers for silicon photonics, with the focus primarily on the 800G transceivers, though management discussed increasing capacity for the high-power CW lasers to 2.5 million per month, or 30 million annually, by “sometime next year.”
We have previously discussed the importance of CW lasers for SiPho in our Lumentum analysis, Lumentum at Inflection Point with 20% QoQ Growth in AI-Related Segment, where Lumentum said it was “having challenges actually getting enough CW lasers for our own transceivers.” This will give AOI easily enough capacity to meet its planned transceiver capacity growth in a vertically-integrated manner:
“We are increasing our high-power CW laser for silicon photonics to maybe 2.5 million lasers per month by sometime next year. So right now, our in-house capacity is 100G EML. We should have 200G EML sometime soon, next year, for sure, the high-power laser for silicon photonics and VCSEL, the other new project, the 200G photo detector, okay? So this is all manufactured, 100%, in Houston.”
Conclusion
The primary risks with AOI stem from its margin profile as it is much weaker than more established networking players as well as the hypergrowth players we track. While there is an expectation for margins and EPS to improve through 2026 as 800G/1.6T products ramp, this will need to be proven over the coming few quarters. The weak cash flows also present a risk if there is a prolonged recovery, given the thinner cash position AOI has, while China concentration also poses a larger red flag given geopolitical tensions may be rising again.
However, it’s hard to argue with the strong growth expected across the optical transceiver industry emerging through 2026 from 800G and 1.6T products, combined with AOI’s 17X increase in capacity through mid-2026 for said products. Rough math suggests these products could generate more than double current quarterly revenue estimates when selling out at full capacity, while cable TV is expected to contribute nicely to growth in 2026 as well.
Damien Robbins, Equity Analyst at I/O Fund contributed to this analysis.
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