Why optical stocks Lumentum and Coherent were the day's biggest S&P 500 gainers
Investors are looking further down the AI data-center supply chain for signs of demand amid concerns of a spending slowdown, one expert says.
Archived explainer. For the current picture see today's COHR page.
COHERENT CORP (COHR) is up +6.92% in the latest session. Our newswire has captured 12 stories on COHR across 7 sources in the last 36 hours, with AI sentiment reading bullish (avg 65/100).
COHR stock rose 6.92% to $289.93 on Wednesday amid a broader rebound in optical sector shares. The move followed recent upgrades and positive momentum in the AI infrastructure space, with investors focusing on signs of sustained demand for data-center components despite broader market uncertainty.
Coherent shares climbed alongside optical peers such as Lumentum and Applied Optoelectronics, which also saw strong gains. Analysts noted that investors are looking further down the AI data-center supply chain for evidence of demand, as concerns persist over a potential spending slowdown. The rally was partly fueled by Ciena’s upgraded guidance, which spurred optimism across the sector. Additionally, a Seeking Alpha article highlighted Coherent as undervalued with a forward P/E of 28.8 and potential catalysts such as PhotonLink and SiC cooling technologies. The stock’s performance reflects a broader oversold bounce in optics stocks, with no single headline driving the move but rather a collective re-rating of the space.
The stock’s 52-week range is $100.63 to $440.00, and it currently trades at a P/E of 65.8 with a market cap of $52.2B. Recent insider transactions show nine sales totaling $9.4M in the last 90 days, with no insider purchases recorded. Congressional trades in the same period included five buys and six sells. On the retail side, Coherent was mentioned in one Reddit/X post in the last 24 hours, with traders on r/wallstreetbets noting its 7% gain. The 52-week tape also showed two fresh 52-week highs on the same day, suggesting broader market breadth.
While no earnings date is provided, coverage of the stock has increased significantly in the last 36 hours, with 12 stories from seven sources. Investors should monitor the sector’s momentum and any follow-up analyst commentary for further clarity on the AI infrastructure narrative.
AI-assisted analysis composed exclusively from headlines and data on the Top Tier newswire. Public view is delayed 4 hours from real time. Not financial advice.
Investors are looking further down the AI data-center supply chain for signs of demand amid concerns of a spending slowdown, one expert says.
Investors are looking further down the AI data-center supply chain for signs of demand amid concerns of a spending slowdown, one expert says.
Coherent (COHR) stock jumps ~7% as optical shares rally on Ciena growth targets.
Lumentum is the best-performing S&P 500 stock Wednesday, and Coherent isn’t far behind. Corning is seeing smaller gains.
Coherent Corp. looks undervalued as an AI infrastructure play—28.8x fwd P/E, catalysts like PhotonLink & SiC cooling, risks & upside to $454. Click for a COHR stock update.
Optics stocks are rebounding Wednesday morning without a fresh headline to point to, and the size of the group’s move relative to the broader market is the story. The iShares Semiconductor ETF (NASDAQ:SOXX) is at $508.59, up 2%, while the SPDR S&P 500 ETF Trust (NYSEARCA:SPY) is at $759.69, up just 0.3%. The three optics […]
More on COHR: full news and sentiment history. Sentiment scores are AI-derived research signals, not financial advice.
Earlier COHR move explainers: 2026-09-17 · 2026-09-16 · 2026-09-15 · 2026-09-14 · 2026-09-08 · 2026-09-04 · 2026-08-25 · 2026-08-24 · 2026-08-19 · 2026-08-18 · 2026-08-17 · 2026-08-10 · 2026-08-07 · 2026-08-04 · 2026-08-03 · 2026-07-28 · 2026-07-24 · 2026-07-14 · 2026-07-13