Applied Optoelectronics Q3: Timing Miss yet Q4 Signals Inflection Point

Applied Optoelectronics missed revenue by $1.2M for revenue of $118.6M expected compared to $119.9M reported. The miss was due to a timing issue with management stating data center revenue was “a touch below our expectations, largely due to the timing of certain shipments at quarter-end. In particular, we had approximately $6.6 million in shipments of 400G transceivers to a large hyperscale customer, which was not able to be turned into revenue during the quarter due to various shipping and receiving delays and which we have booked in Q4.”

Although the headline numbers are causing an aftermarket selloff, the call was quite clear that the company AOI (Nasdaq: AAOI) is preparing to grow shipments significantly. Most importantly, there were discussions of an “imminent” 800G qualification coming in the next few weeks with additional hints of very strong QoQ data center growth next quarter. The earnings call signaled an important inflection point in Q4 that is not accurately depicted in Q3 numbers. We cover this and more below!

The Importance of the 800G Qualification

AOI is expected to become a large supplier for 800G and 1.6T optics, especially for its customer Amazon with a deal worth $4B over ten years. However, the 800G qualification is expected to expand beyond Amazon with management stating: “we believe we are near the final stages of qualification with several customers. We expect qualification in the near term based on conversations that we are having with our customers, and we continue to believe that we will produce meaningful shipments of 800G products in the fourth quarter.”

When asked how soon the qualifications could occur, management used the word “imminent.” This is noteworthy because AOI faced timing delays in Q3, which meant the quarter reflected very little contribution from AI data center revenue. In fact, roughly 83% of data center sales came from 100G products, while only 9% came from 200G and 400G transceivers. If we take management’s commentary at face value, this sets up a potential inflection point for AOI, as 400G — and especially 800G — products carry higher sales prices that can accelerate growth. With qualifications now described as “imminent,” AOI may be entering the part of the product cycle where higher-speed optics begin to materially impact the top line.

This understanding was echoed by management with the following statement: “Looking ahead to Q4, we expect a substantial sequential increase in our data center revenue driven by growth in 400G revenue, as well as layering in some increased 800G revenue.” Later, management quantified their expectations: “That means the data center growth should be a lot, okay, since the revenue increased by about 10% compared to Q3. That means data center revenue will increase by $25-$40 million in Q4.” Given that data center was $43.9 million this quarter, that would imply 74% data center growth at the midpoint – a sharp contrast to the (2%) decline QoQ in data center revenue this quarter.

This is supported by additional color in terms of where the company is now on shipping volumes compared to where they expect to be by year-end and mid-year 2026:

Right now, we’re only talking about maybe 10,000, 20,000. It’s a volume still far away from, quite away from. That’s why I say by end of December, we should have 100,000 per month. By end of June next year, we have 200,000 per month.”

AOI is Building USA’s Largest 800G and 1.6T Laser Production Capacity

As covered previously, in 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.

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.

The fact AOI is on the verge of a sharp ramp was a central theme on the call with management stating:

As a reminder, we expect this will culminate later this year with what we believe will be the largest domestic production capacity for 800G or 1.6 terabit transceivers, approximately 35,000 transceivers per month, or roughly 35% of our overall capacity for these advanced optical transceivers. Notably, we will be able to accommodate this expansion in our current Texas facility footprint. Further, by mid-2026, we continue to expect to be able to produce over 200,000 pieces per month, with the majority produced in Texas.”

The only change in tone the I/O Fund team could pick up on is the Texas facility is expected to now produce 35% of overall capacity compared to commentary in the previous earnings call that Texas would contribute 40% of overall capacity. In Q2, it was stated:

We continue to expect to exit this year with a production capacity of over 100,000 units of 800G transceivers per month, with 40% of this production being done in the US”

Last week, the company announced its $150M investment for expansion in Texas to increase its USA production over a five-year period:

The expansion project, when complete, will have the largest production capacity for AI-focused datacenter transceivers in the U.S.”

Timing for 400G, 800G and 1.6T

I’m earmarking AOI to (hopefully) make a splash starting next quarter and into Q2 2026. It’ll be an interesting three quarters as 400G is expected to carry the revenue in Q4, then 800G in early 2026 with 1.6T taking effect by Q2.

Here is what was stated on the earnings call:

If you look at our guidance, again, just kind of go back to the segment guidance that we gave. It implies a dramatic ramp in data center revenue in the fourth quarter. We didn’t give annual guidance for next year, but we certainly believe that’s the beginning of a sustained ramp. I think we’re exactly in sync with what you described. We’re seeing that ramp first at 800G, but as we talked about, later next year, we expect 1.6 to be a strong contributor as well.”

Financials

Revenue

AOI reported $118.6 million in revenue in Q3, slightly below estimates for $119.8 million and at the lower end of management’s guidance for $115 to $127 million. This represented growth of 15.2% QoQ and 82.1% YoY, decelerating from 137.9% YoY in the second quarter, driven by strong cable TV demand and the ramp of 1.8 GHz amplifier products as data center revenue was soft.

For Q4, AOI guided for revenue between $125 and $140 million, up 11.7% QoQ and 32.1% YoY, another sharp deceleration though this comes against much tougher comps. Management expects to recognize 800G revenue in the fourth quarter: “we continue to believe that we will produce meaningful shipments of 800G products in the fourth quarter.”

Key Segments

CATV (Cable TV):

CATV revenue surged 237.1% YoY and 26.1% QoQ to a record $70.6 million, with management characterizing demand as “exceptionally strong.”

Data Center:

Data center revenue was $43.9 million, up 7.3% YoY but down (1.9%) QoQ, with management explaining that this “came in a touch below our expectations, largely due to the timing of certain shipments at quarter end due to various shipping and receiving delays.” AOI also added that it is seeing increased orders for 100G and 400G products from several large customers, and expects increased demand for both through the end of the year.

According to the opening remarks, the split across products was “In the third quarter, 83% of data center revenue was from 100G products, 9% was from 200G and 400G transceiver products, and 7% was from 10G and 40G transceiver products.”

Telecom/Other:

Telecom revenue rose 33.7% YoY and 92.8% QoQ to $3.74 million, while other revenue was $0.35 million.

Margins

AOI showed a marginal sequential improvement in GAAP operating margin despite GAAP gross margin contracting, though the company is not meaningfully closer to GAAP profitability.

GAAP gross margin was 28.0%, down 2.3 points QoQ but up 3.6 points YoY. Adjusted gross margin was 31%, at the high end of guidance and up 0.6 points QoQ and 6 points YoY.
GAAP operating margin was (15.3%), a slight improvement from (15.5%) in Q2 and up more than 10 points YoY. Adjusted operating margin was (8.7%), improving 1.8 points QoQ and 9.2 points YoY.
GAAP net margin was (15.1%), down from (8.8%) in Q2 but up from (27.3%) in the year ago quarter. Adjusted net margin was (4.6%), below guidance for (3.3%) but marking an improvement from (8.6%) in Q2 and (13.5%) in the year ago quarter.

For Q4, management guided for adjusted gross margin to be 29-31%, down 1 point QoQ but up 1.3 points YoY at midpoint. Adjusted net margin was guided at (4.5%), approximately flat QoQ.

EPS

AOI met adjusted EPS estimates this quarter at ($0.09), though Q4’s guidance missed as the company is still forecasting a small loss whereas estimates were expecting a shift to profitability, albeit at a thin $0.03.

Q3 GAAP EPS was ($0.28), improving from ($0.42) in the year ago quarter but widening from ($0.16) in Q2. This missed estimates for ($0.10).
Q3 adjusted EPS met at ($0.09).
Q4 adjusted EPS was guided to be ($0.13) to ($0.04), short of consensus for $0.03.

Cash and Balance Sheet

Cash flows significantly improved from Q2, and inventories rose sharply once again, likely in preparation for the ramp of 800G products.

Q3 operating cash flow was ($28.5 million) for a (24%) margin, improving from a (63.6%) margin in Q2 but down slightly from (22.2%) a year ago.
Q3 free cash flow was ($57.5 million) for a (48.5%) margin, improving from (101.3%) in Q2 but still lower from (32%) a year ago.
Cash and equivalents totaled $150.7 million and debt totaled $192.1 million.
Inventories were $170.2 million, up 22.5% or $31.3 million QoQ. Since Q1, inventories have risen by ~$68 million.

Conclusion:

If the market were always on our side, investing would be easy. What we’re seeing this quarter is a reminder that even when a company’s story remains intact, the market can still get the jitters. This stock, however, continues to get a green light from me across the board — the headline “miss” was a non-issue (on the contrary – it’s a boon for the strong QoQ commentary on Q4). Looking ahead, shipments are on track to increase 16X over the next year, kicking off soon with key 800G qualifications only weeks away. Management is feeling comfy enough to include 800G in the Q4 guide — a meaningful signal. Of course, nothing is ever certain in investing. But based on what I heard this evening, this is not a report I’m concerned about.

Please note: The I/O Fund conducts research and draws conclusions for the Fund’s positions. We then share that information with our readers. This is not a guarantee of a stock’s performance. Please consult your personal financial advisor before buying any stock in the companies mentioned in this analysis. Beth Kindig and the I/O Fund own shares in Applied Optoelectronics at the time of writing and may own stocks pictured in the charts.

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