This article digs into the sharp pullback in leading AI optical-component stocks after a long, momentum-fueled rally. It looks at what’s really driving demand for optical components in AI data centers, recent quarterly results, and the risk-reward mix as investors weigh high valuations against the chance that order flow could slow soon.
Market backdrop: AI optical components and the pullback
Shares of Applied Optoelectronics, Lumentum, and Coherent slid in midday trading as momentum traders took profits after a big run. There wasn’t a single obvious negative headline—investors just seemed ready to lock in gains in some of the most stretched names in the group.
This kind of sell-off isn’t new. Strong year-to-date performance often attracts profit-taking, even if the core growth story is still there.
Near-term price action reflected both technical and fundamental forces. Technically, several stocks flashed overbought signals, which hinted that buyers might finally be getting tired after such a rapid climb.
On the fundamental side, demand is still tied to AI-driven data center expansion. But valuations for some leaders in this space have definitely stretched.
Key momentum signals behind the move
Momentum and volatility in the AI optical components market really showed up in the price swings:
- Applied Optoelectronics fell about 10% at its intraday lows, dragging the sector lower.
- Lumentum Holdings dropped roughly 9% during midday, giving back part of a big rally.
- Coherent slipped about 6% in the same wave.
Even setting aside these wild intraday moves, the rally’s intensity stands out. Some of these stocks are up huge year-to-date and over the past year, which just raises the risk of a pullback if no fresh catalysts show up.
Demand drivers: AI data centers and hyperscalers
The bullish case for optical components depends on steady capital spending by hyperscalers as they upgrade data-center interconnects to faster transceivers. The industry is moving from 400G to 800G, and eventually toward 1.6T transceivers. That shift should keep revenue growth coming for optical component makers.
Recent quarterly results back up that demand story. Lumentum reported fiscal Q2 2026 revenue of $665.5 million, up 66% year over year, and guided fiscal Q3 revenue to $780–$830 million. Coherent posted fiscal Q3 datacenter and communications revenue of $1.36 billion, up 41% year over year.
These numbers show that, even with the volatility, AI-driven infrastructure spending is still a real driver for optical products. But the bullish thesis really hangs on the idea that hyperscalers will keep spending big and rolling out higher-bandwidth interconnects.
Lofty valuations, though, make these stocks sensitive to any sign of slower orders or tighter spending cycles by major customers. That’s just the reality with names trading at this kind of premium.
Valuation and risk considerations
Valuation is a major risk for the AI optical-component stocks. The market has rewarded growth, but the current multiples are pretty steep.
For example, Coherent’s trailing P/E is around 182x, and Applied Optoelectronics has a forward P/E near 84x. Those levels mean even a small shift in order patterns or a change in tone from hyperscalers could move these stocks in a hurry.
Other risks? There’s always the chance of a near-term order slowdown, supply-chain hiccups, or changes in capex guidance from big customers. Investors are watching the next round of earnings and commentary to figure out if this pullback is just a blip or the start of something longer.
Near-term catalysts and the path forward
- Coherent’s next earnings release and what they say about datacenter demand and capex plans.
- Lumentum’s fiscal Q3 results, plus any updates to guidance or comments on hyperscaler spending.
- Analyst target changes and broader hyperscaler capex talk that could reset expectations for AI optical components.
In the near term, it’s all about whether demand can stay strong enough to justify these valuations—and if order momentum can pick up again, especially as some of the more exuberant AI infrastructure suppliers maybe take a breather. Hard to say, but that’s what everyone’s watching now.
Outlook for AI optical components and hyperscale demand
Looking further out, the demand for AI optical components still looks strong. It’s closely linked to the ongoing expansion of hyperscale data centers and the push for faster bandwidth at the chip level.
Sure, the recent pullback might cool some of the excitement in the short run. But the main drivers—AI workloads, constant data-center upgrades, and the shift to higher-speed optics—still point to steady growth over several years.
Investors should weigh the strength and speed of these AI trends against valuations and the timing of big spending cycles from hyperscalers. There’s always a bit of guesswork here, but that’s the game.
Here is the source article for this story: Applied Optoelectronics Slumps 10%, Lumentum Dives 9%, Coherent Drops 6% as AI Optics Profit-Takers Strike