Applied Optoelectronics Falls 12%, Coherent and Lumentum Slide as AI Optics Trade Cools

AAOI dropped 12% and Lumentum slid 7% on no company-specific news, unwinding the momentum from yesterday's Texas capacity expansion rally.

QQQ fell less than 1% while SOXX dropped 3%, exposing how AAOI's beta of 3.69 and 206% year-to-date run amplify every AI hardware risk-off wave.

Lumentum posted record Q3 revenue of $808 million, up 90% year over year, with an optical circuit switch backlog exceeding $400 million supporting the long-term thesis.

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Shares of Applied Optoelectronics ( NASDAQ:AAOI ) are sliding Wednesday afternoon, down 12% to $110 and change, as investors pull back from the highest-beta corners of the AI optics trade. The move reverses yesterday's bounce tied to the company's Texas capacity expansion.

Applied Optoelectronics' peers are moving in sympathy. Lumentum ( NASDAQ:LITE ) stock is down 7% to $757, while Coherent ( NYSE:COHR ) shares are down 5% to $296. The trio has led AI-photonics gains for months, and today's action looks like targeted de-risking rather than a broad selloff.

For context, the NASDAQ 100 is down slightly today, but it's merely a fraction of the drawdown in these three optics/photonics names. That gap points to profit-taking after parabolic runs across a crowded trade.

There's no fresh company-specific news driving Applied Optoelectronics, Lumentum, or Coherent shares lower today. Instead, all three are being swept into the same AI-hardware risk-off hitting chip names like Micron Technologies ( NASDAQ:MU ) and Intel ( NASDAQ:INTC ).

These are optical-transceiver and photonics companies, so Micron's China memory competition headline is a sentiment read-through rather than a fundamental hit. The pressure reflects broad AI-hardware de-risking, amplified by the fact that AAOI carries a beta around 3.69 and is up 206% year to date.

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Wednesday's move also reflects yesterday's sharp bounce fading. Applied Optoelectronics stock rallied on the Pearland, Texas groundbreaking for 800G and 1.6T transceiver capacity, and momentum traders appear to be stepping back after that pop.

The iShares Semiconductor ETF ( NASDAQ:SOXX ) is down 3% to $550.69 Wednesday, and it's a useful proxy for the broader chip complex. It's worth noting that optics is only a small slice of the fund.

The SOXX ETF also carries concentration risk in the top chip names and isn't leveraged, so it will move less than these ultra-high-beta optics stocks in either direction. The ETF is still up 81% year to date, underscoring how stretched the AI-hardware trade has become heading into this pullback.

Lumentum stock has been the strongest of the three on fundamentals, with record Q3 FY2026 revenue of $808.4 million, up 90% year over year, and an optical circuit switch backlog exceeding $400 million. Coherent has structural support from NVIDIA 's ( NASDAQ:NVDA ) $2 billion investment and its indium phosphide scale-up in Texas.

The bull case for Applied Optoelectronics rests on accelerating hyperscaler demand for 800G and 1.6T optics, plus new U.S. capacity. Management guided Q2 2026 revenue to $180 million to $198 million, and full-year 2026 revenue is projected to exceed $1 billion versus $455.72 million in 2025.