Coherent closed at $266.50, a decline of 12.73 percent.

Options flow was dominated by a single $875,000 in-the-money put purchase on the September 18, 2026 $270.00 strike. With the stock already below the strike, the block carries direct directional weight. The absence of any comparable bullish large trades left the session's institutional tone firmly risk-off, reinforcing the sharp single-day equity decline rather than fading it.

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Options Indicators

COHR’s implied volatility is 72.62%, while its IV percentile stands at 20.72%, which places current volatility conditions in the lower end of its recent range. In other words, even though the absolute IV level appears high, options are still relatively cheaply priced versus their own history, and the IV/HV ratio of 0.90 suggests implied volatility is running slightly below realized volatility rather than carrying a notable premium.

The Call/Put volume ratio is 0.86, confirming the defensive skew observed in the single-name flow and indicating that put activity outpaced call activity on the session.

Large Trades

A put buy worth $875,000 was the standout large trade, with 1,250 contracts purchased on the September 18, 2026 $270.00 put. With the stock reference price at $266.50, the option was in the money at the time of execution, which makes this a relatively direct bearish positioning or downside hedge. The use of long puts at an in-the-money strike suggests the trader was seeking meaningful downside sensitivity rather than just low-cost tail protection, pointing to expectations of weakness in COHR or a desire to protect against further downside risk.

Overall, the large-trade flow in COHR leaned clearly bearish. The only displayed block was a sizable in-the-money put purchase, which typically reflects either a conviction-driven downside bet or a protective stance against future share-price deterioration. With no offsetting bullish large trades appearing in the flow, the institutional tone signaled caution and a negative directional bias on the stock.

Strategy Reference

For a low-assignment-probability short premium stance, a put seller could look at an out-of-the-money strike such as the September 18, 2026 $220.00 put, which would sit roughly 17% below the current close and benefit from the still-elevated absolute IV level despite the relatively low IV percentile. Alternatively, a bear put spread using the $270.00 and $230.00 strikes would cap defined risk while aligning with the institutional bearish signal in today's flow.