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Corning (GLW) Crashed 20% Despite 32% Optical Growth. Should Coherent (COHR) Investors Worry?
Insider Monkey14d agobearish
Corning (GLW) Crashed 20% Despite 32% Optical Growth. Should Coherent (COHR) Investors Worry?

Corning Incorporated (NYSE:GLW) delivered rapid optical growth on July 28, then suffered a share-price decline of more than 20% after its guidance fell short of elevated expectations. Coherent Corp. (NYSE:COHR) also traded sharply lower. Coherent belongs in this story for a specific reason: the two companies monetize different components of the same AI data-center links. […]

Coherent (COHR) Is Down 6.1% After Shift Into Russell Growth Benchmarks Amid AI Optics Reset
Simply Wall St.41d agobearish
Coherent (COHR) Is Down 6.1% After Shift Into Russell Growth Benchmarks Amid AI Optics Reset

In late June 2026, Coherent Corp. was added to several Russell Growth benchmarks, including the Russell 1000 Growth and Russell Midcap Growth, while being removed from the Russell 2500 and Russell 2500 Value indices amid a sector-wide reset in semiconductor and AI infrastructure stocks. This index reshuffling underscores how investors are increasingly viewing Coherent as a growth-oriented AI optics provider, even as broader chip valuations come under pressure. Against this backdrop of...

Applied Optoelectronics Plunges 17%, Coherent and Lumentum Sink 10% as Photonics Stocks Reset
24/7 Wall St.41d agobearish
Applied Optoelectronics Plunges 17%, Coherent and Lumentum Sink 10% as Photonics Stocks Reset

Shares of high-flying photonics names are sliding at midday Thursday. Applied Optoelectronics (NASDAQ:AAOI) stock is down 17% to $114.93, the biggest decliner in the group and easily the sharpest single-session drop of the three. Coherent (NYSE:COHR) stock is off 10% to $331.57, while Lumentum (NASDAQ:LITE) stock is down 10% to $720.91. The moves interrupt some ... Applied Optoelectronics Plunges 17%, Coherent and Lumentum Sink 10% as Photonics Stocks Reset

Applied Optoelectronics Plunges 13%, Coherent Drops 9%, Lumentum Falls 8%: Has an Optics Valuation Reckoning Begun?
24/7 Wall St.50d agobearish
Applied Optoelectronics Plunges 13%, Coherent Drops 9%, Lumentum Falls 8%: Has an Optics Valuation Reckoning Begun?

Shares of optical and photonics suppliers are tumbling at midday Tuesday, with Applied Optoelectronics (NASDAQ:AAOI) stock leading the decline, down 13% to $149. Coherent (NYSE:COHR) stock is off 9% to $387, while Lumentum (NASDAQ:LITE) stock has slipped 8% to around $825. The selloff is sharp, but it arrives without a fresh company-specific catalyst from Applied ... Applied Optoelectronics Plunges 13%, Coherent Drops 9%, Lumentum Falls 8%: Has an Optics Valuation Reckoning Begun?

Investing.com63d agobearish
Soitec stock plunges 13% on Jefferies downgrade over FY27 valuation

Investing.com -- Soitec SA shares dropped over 13% on Wednesday after Jefferies downgraded the French semiconductor substrate maker to “underperform” from “hold,” setting a price target of €85, a 39.35% discount to Tuesday’s close of €140.15, citing a disconnect between the stock’s valuation and its underlying fundamentals.

Applied Optoelectronics Tumbles 9%, Coherent Sinks 8%, Lumentum Falls 4% as Optics Stocks Cool Off
24/7 Wall St.75d agobearish
Applied Optoelectronics Tumbles 9%, Coherent Sinks 8%, Lumentum Falls 4% as Optics Stocks Cool Off

Shares of Applied Optoelectronics (NASDAQ:AAOI) are down 9% midday Friday to roughly $154, leading a broader cool-off in AI optics names. Coherent (NYSE:COHR) is off 8% to about $346, and Lumentum (NASDAQ:LITE) is sliding 4% to around $829. The drops look dramatic on the day, yet they barely dent the year’s gains. AAOI stock is ... Applied Optoelectronics Tumbles 9%, Coherent Sinks 8%, Lumentum Falls 4% as Optics Stocks Cool Off

Nvidia Might Have Just Revealed the AI Sleeper Stock That Investors Missed
24/7 Wall St.84d agobearish
Nvidia Might Have Just Revealed the AI Sleeper Stock That Investors Missed

Nvidia (NASDAQ:NVDA) has been on quite the investment spree in the past year, and while much of the AI bets and partnerships have begun to bear fruit after the latest run in AI-related names, questions linger as to how all these “circular” bets change the risk/reward profile of the world’s largest company. Undoubtedly, if there’s ... Nvidia Might Have Just Revealed the AI Sleeper Stock That Investors Missed

Applied Optoelectronics Slumps 10%, Lumentum Dives 9%, Coherent Drops 6% as AI Optics Profit-Takers Strike
24/7 Wall St.86d agobearish
Applied Optoelectronics Slumps 10%, Lumentum Dives 9%, Coherent Drops 6% as AI Optics Profit-Takers Strike

The hottest corner of the AI infrastructure trade is taking a breather. Shares of Applied Optoelectronics (NASDAQ:AAOI) are down 10% in Monday midday trading, while Lumentum Holdings (NASDAQ:LITE) is off 9% and Coherent (NYSE:COHR) has slipped 6%. There’s no fresh negative catalyst tied to any single name. Instead, momentum traders appear to be cashing out ... Applied Optoelectronics Slumps 10%, Lumentum Dives 9%, Coherent Drops 6% as AI Optics Profit-Takers Strike

Applied Optoelectronics Crashes 14%, Coherent Slides 10%, Lumentum Falls 7% as Optics Trade Cools
24/7 Wall St.97d agobearish
Applied Optoelectronics Crashes 14%, Coherent Slides 10%, Lumentum Falls 7% as Optics Trade Cools

The AI optics trade is taking a breather. Shares of Applied Optoelectronics (NASDAQ:AAOI) are down 14% in midday trading, while Coherent (NYSE:COHR) is off 10% and Lumentum (NASDAQ:LITE) is sliding 7%. The selloff is sector-wide. Ciena (NYSE:CIEN) is lower by 10% and Fabrinet (NYSE:FN) is down 8%, confirming this is correlated basket selling rather than ... Applied Optoelectronics Crashes 14%, Coherent Slides 10%, Lumentum Falls 7% as Optics Trade Cools