Coherent Falls 12%, Lumentum Drops 7% as AI Optics Stocks Cool Ahead of Earnings
π Coherent stock is down 12% to $333.83 and Lumentum shares are off 7% to $830.05 as traders take profits across the AI optics complex.
π° Both Coherent (P/E 159.96x) and Lumentum (P/E 145.91x) were priced for perfection, leading to a sell-off ahead of their fiscal Q4 2026 earnings reports.
π Lumentum reports fiscal Q4 2026 results after the close on Tuesday, August 11, while Coherent follows with its report after the close on Wednesday, August 12.
π‘οΈ Applied Optoelectronics (AAOI) shares are down just 1% to $133.63 as it is insulated from pre-earnings de-risking pressure having already reported on August 6.
π The broader chip complex is holding up better than optics pure-plays, with the iShares Semiconductor ETF (SOXX) down only 1% to $536.94.
π€ NVIDIA remains the demand engine underpinning the optical-networking story, and any hesitation on AI capex expectations could land hardest on Coherent and Lumentum.
π Options positioning is leaning defensive, with Coherent's full-chain put/call ratio at 1.19 and Lumentum's at 1.54.
π Community chatter has turned to vague sector-rotation talk weighing near-term supply-chain uncertainty against long-term AI-networking demand.
- Applied Optoelectronics (AAOI) is insulated from the current pre-earnings de-risking pressure affecting Coherent and Lumentum.
- The broader semiconductor complex is holding up better than optics pure-plays, indicating that this is an optics-specific unwind rather than a broad semiconductor crisis.
- Coherent stock is down 12% to $333.83 and Lumentum shares are off 7% to $830.05 as traders take profits across the AI optics complex.
- Both names were priced for perfection heading into their next earnings reports, which helps to explain why they are selling off hardest today.
- The valuation math matters here, with Coherent trading at a trailing 12-month P/E ratio of 159.96x and Lumentum sitting at 145.91x.
- Community chatter has turned to vague sector-rotation talk that weighs near-term supply-chain uncertainty against long-term AI-networking demand.
- Options positioning is already leaning defensive, with Coherent's full-chain put/call ratio at 1.19 and Lumentum's at 1.54.