AAOI · Applied Optoelectronics

The thesis

Applied Optoelectronics is more likely to lag the S&P 500 over the next three months. Its fourth-quarter revenue guide trails Wall Street's estimate, and a chip shortage is limiting its fastest transceivers. Nvidia's report on 17 November 2026 is the next test of AI datacenter demand. The fourth-quarter report, expected around late February 2027, shows whether the transceiver ramp arrives on schedule.

On 5 November 2026 the company reported third-quarter revenue of $269.9 million, up from $118.6 million a year earlier and $191.9 million in the second quarter. Datacenter revenue was $155.6 million. Non-GAAP (adjusted, outside generally accepted accounting principles) gross margin was 28.7%, below the 29%–30.5% range the company guided on 6 August 2026. It guided fourth-quarter revenue to $385–420 million, below the $427.263 million consensus estimate reported by Benzinga.

The third-quarter 10-Q puts the receivable from Digicomm International at $234.5 million of $413.76 million in net accounts receivable at 30 September 2026, up from $211.0 million at 30 June 2026. Per 24/7 Wall St. on 9 November 2026, a shortage of digital signal processor (DSP) chips limited shipments of 1.6-terabit transceivers, and management expects improvement in the first quarter of 2027. That puts the relief after the fourth quarter closes.

A new 8-K filed 12 November 2026 shows the company spent $102.25 million in cash on 6 November 2026 to buy three Houston buildings it had leased since May 2026. The purchase adds owned manufacturing space and draws down the $621.5 million cash balance reported at 30 September 2026.

The shares closed at $52.85 on 12 November 2026, 77.4% below the 52-week intraday high of $233.67 set on 13 May 2026, so the price already reflects a delayed ramp. Analyst targets run from B. Riley's $45 to Raymond James's $165. The rating is Low because the guide, the margin and the DSP timing all point to a fourth quarter that confirms the delay rather than ends it.

Bullish and bearish views on Applied Optoelectronics, Inc.

The bull case on Applied Optoelectronics, Inc. (AAOI), in brief: demand from AI cloud buyers is strong. The bear case: fourth-quarter guide trails consensus.

Bull case

• Demand from AI cloud buyers is strong. CoreWeave reported third-quarter revenue of $3.66 billion and raised its full-year revenue guide to $13–13.3 billion on 10 November 2026, per Benzinga. Applied Optoelectronics shares rose from a $48.32 close on 10 November 2026 to $55.86 on 11 November 2026.
• The fourth-quarter guide is a large step up. The $385–420 million revenue range compares with $269.9 million in the third quarter. The company guided non-GAAP gross margin of 29.5%–31% and non-GAAP earnings per share of $0.48–$0.63 on about 96 million shares, per its 5 November 2026 8-K.
• Datacenter revenue is growing fast. Third-quarter datacenter revenue was $155.6 million, against $43.9 million in the third quarter of 2025, per the 5 November 2026 results release.
• Capacity plans reach far beyond today. The company said on 5 November 2026 that equipment capacity is approaching 330,000 units a month and targets over 1 million 800-gigabit and 1.6-terabit transceivers a month by the end of 2027.
• The Houston plant is now owned. The 8-K filed 12 November 2026 shows the $102.25 million purchase of 736,216 rentable square feet ended three leases that each ran 123 months, with no early termination penalty.
• Some analysts still see large upside. Raymond James kept an Outperform rating and cut its target to $165 from $178, per 24/7 Wall St. on 9 November 2026. On 6 November 2026 Needham kept a Buy rating with a $100 target and Rosenblatt a Buy rating with a $115 target.

Bear case

• Fourth-quarter guide trails consensus. Even the $420 million top of the range sits below the $427.263 million estimate, per Benzinga on 5 November 2026.
• Gross margin missed its own range. Third-quarter non-GAAP gross margin was 28.7%, below the 29%–30.5% guide, the 29.8% of the second quarter and the 31.0% of the third quarter of 2025.
• A DSP shortage limits 1.6-terabit shipments. Management expects improvement in the first quarter of 2027, per 24/7 Wall St. on 9 November 2026, which leaves the fourth quarter exposed.
• Customer concentration rose. The top three customers made up 41%, 28% and 23% of third-quarter revenue and the top ten 99%, per the 10-Q. Digicomm International's receivable rose to $234.5 million at 30 September 2026.
• The capacity target came down. The company now expects equipment for over 500,000 units a month by the end of 2026, against 650,000 stated on 6 August 2026. It said on 5 November 2026 that the 2027 US expansion may take longer because of delays in getting electrical power.
• Insiders keep selling under set plans. SEC Form 4 filings show the chief financial officer sold 4,000 shares at $48.83 on 10 November 2026 under a Rule 10b5-1 plan, after 4,000 shares at $102.87 on 12 October 2026.
• The most cautious target is below the share price. B. Riley kept a Neutral rating and cut its target to $45 from $92 on 6 November 2026.

Price setup

The shares closed at $52.85 on 12 November 2026, down from $55.86 on 11 November 2026. Over three months they are down 64.8%, from $150.28 on 14 August 2026. As of 12 November 2026 the 50-day moving average is $88.73 and the 200-day moving average is $114.93, both far above the price.

The results came after the $46.89 close on 5 November 2026. Since the first session on the results closed at $50.13 on 6 November 2026, closes have ranged from $48.32 on 10 November 2026 to $55.86 on 11 November 2026. The CoreWeave rally lifted the shares to the top of that range, and they gave back part of it on 12 November 2026.

The 52-week intraday high is $233.67, set on 13 May 2026. The 52-week closing low is $19.49, set on 20 November 2025.

Share supply has grown. The company completed a $600 million at-the-market stock program on 5 October 2026, its third such program in 2026, and had 90,770,732 shares outstanding on 2 November 2026, per the 10-Q cover. The fourth-quarter guide assumes about 96 million shares.

Catalysts ahead

• 17 November 2026: Nvidia fiscal third-quarter 2027 results, after the market close. It is the next large read on AI datacenter spending and on DSP and accelerator supply, which moved optical shares on 11 November 2026 after CoreWeave reported.
• ~26 February 2027 (est.): Applied Optoelectronics fourth-quarter 2026 report. It shows whether revenue reached the $385–420 million guide and gross margin the 29.5%–31% range, and whether the first-quarter 2027 outlook confirms an easing DSP shortage.

What would change the view

A daily close above $83.73, the 15 October 2026 close, which would show the shares leading the S&P 500 and prove this call wrong. So would fourth-quarter 2026 revenue above $420 million, the top of the guided range.

What it trades with

The shares trade with optical-component peers and with AI cloud spending news. On 9 November 2026, 24/7 Wall St. reported early gains of 13% for Coherent, 11% for Lumentum, 9% for Ciena and 8% for Fabrinet, with Applied Optoelectronics up 4%. On 11 November 2026 CNBC reported a 24.71% gain for CoreWeave, Benzinga reported a 2.8% rise in the Nasdaq 100, and Applied Optoelectronics closed at $55.86, its highest close since the report.

24/7 Wall St. linked the optical selloff of the week of 2 November 2026 to fears of tighter datacenter rules after the midterm elections. A return of that worry, or a weak Nvidia report on 17 November 2026, would likely hit these shares harder than the index, given daily moves such as the 15.6% gain from 10 November to 11 November 2026.

Lumentum shares now track Marvell's under their all-stock deal, which 24/7 Wall St. says is expected to close in the first half of 2028. That leaves Coherent, Fabrinet and Ciena as the closest freely trading peers.