Coherent Corp. (COHR) closed Tuesday at $288.02, a decline of 7.91% for the session. The drop added to mounting pressure on the optical and photonics manufacturer, which has now shed 13.70% over the past seven days.
The latest move extended a softer trend over the medium term as well. Over the past 30 days, COHR shares have fallen 5.66%, reflecting persistent headwinds for the stock across multiple timeframes.
Despite the recent losses, Coherent carries a market capitalization of $61.56 billion, underscoring the company's significant scale within its sector. Tuesday's session was among the sharper single-day declines in the recent period covered by available data.
The consecutive losses across the one-day, seven-day, and thirty-day windows paint a consistent picture of selling pressure on the stock, leaving COHR at its current $288.02 level as of the October 13, 2026 close.
