Coherent Corp COHR Stock: What to Know Before the US Market Opens on Dec. 15, 2025
Coherent Corp. stock (NYSE: COHR) heads into the Monday, Dec. 15, 2025 session after a sharp, high-volume selloff that put the spotlight on a single theme investors will likely keep trading around: share supply. On the last trading day before Monday’s open, COHR closed at $178.34, down 10.16% on the day, after swinging between roughly $176.30 and $198.60. Volume was elevated at about 7.35 million shares, underscoring how quickly sentiment can flip in this high-beta photonics name. Below is what’s driving the near-term tape, what the latest filings say about potential additional stock hitting the market, and the fundamentals—AI datacenter