Applied Optoelectronics, Lumentum fall 6% as AI optics trade cools

The AI optical connectivity trade gave back a slice of its August gains Friday, with Applied Optoelectronics and Lumentum each falling 6 percent.

Applied Optoelectronics and Lumentum Holdings each fell 6 percent Friday, to $106.18 and $900, as the AI optical connectivity trade cooled after leading August's hardware rally.

The pullback follows a reported $600 million at-the-market equity program at Applied Optoelectronics, which the company has not confirmed. The sell-side consensus price target on the stock still sits at $163.40, well above Friday's level, according to analyst data compiled by 24/7 Wall St.

Coherent fell 5 percent to $281.06, while Corning dropped 2 percent to $148.99. The iShares Semiconductor ETF declined 3 percent to $508.70, while the SPDR S&P 500 ETF slipped 0.3 percent to $768.84, showing the selling concentrated in AI hardware rather than the broad market.

The four suppliers share a single demand driver — optical interconnect into AI data centers — so they reprice together when expectations for AI hardware spending shift. Applied Optoelectronics was up 225 percent year to date through Thursday, and Lumentum up 159 percent, leaving the group exposed to profit taking after an extended run.

Profit Taking Grips the AI Optics Trade

No company announcement, earnings release, contract, or analyst rating change has been verified at Lumentum, Coherent, or Corning on Friday. A macro trigger does not fit either, since the SPY ETF's move was small and the selling was narrowly concentrated in AI hardware. Profit taking after a run of this size is the simplest explanation for the price action.

The broader market barely moved. The S&P 500 slipped 0.10 percent to 7,715.40, the Dow Jones Industrial Average eased 0.05 percent to 53,532.20, and the Nasdaq 100 fell 0.39 percent to 29,468.00. The Russell 2000 dropped 1.19 percent to 2,979.57, the weakest of the four major benchmarks.

Applied Optoelectronics Carries a Company-Specific Overhang

Applied Optoelectronics sits at the weak end of the group for a reason beyond the sector repricing. Multiple outlets reported this week that the company launched a $600 million at-the-market equity program, and the stock fell sharply on Monday, August 24, as dilution concerns spread. The company itself has not confirmed the program, so it can be treated as reporting rather than a filed disclosure.

That overhang is specific to Applied Optoelectronics and does not extend to Lumentum, Coherent, or Corning. It helps explain why the stock traded in line with Lumentum on a percentage basis Friday despite being the smaller and more volatile name in the peer set. Reddit chatter on Applied Optoelectronics has skewed bullish over the past week, suggesting retail is buying the dip rather than adding to the pressure.

How the Optics Group Ranks Today

Ranking the moves plainly frames the day. Applied Optoelectronics and Lumentum are falling hardest, Coherent is falling somewhat less, and Corning is holding up best of the four. That order roughly mirrors how leveraged each business is to pure AI transceiver demand versus a broader product mix.

The scorecard shows what Friday is and is not. The group is giving back a slice of an exceptional run, and no single reading suggests the underlying AI capex thesis has broken. Corning's lighter drop reflects its broader business mix, where fiber is only one leg of a multi-segment story.

What to Watch

Traders can watch for buying support into the afternoon, since holding these levels would signal that profit taking is contained rather than the start of a deeper AI hardware unwind. Any incremental hyperscaler capex commentary or supplier guidance could shift expectations quickly, so headline risk cuts both ways from here.

For investors holding this group, moderating exposure after a run of this size is defensible. Position sizing should reflect the beta these names carry, with Applied Optoelectronics near 3.79 and Coherent near 2.11, so their moves magnify any change in AI hardware expectations. Shareholders should keep their stops disciplined and their risk sized to what a further pullback in AI hardware could do to their positions.

This article is for informational purposes only and does not constitute investment advice.