Corning closed at USD 158.54, down 5.32%.

Amid the sharp decline, a single large bearish bet dominated the options flow, with a trader purchasing $0.45 million in long-dated puts. This significant trade skewed the sentiment bearish, even as the overall call/put volume ratio registered a seemingly bullish 1.67, highlighting a divergence between broad retail activity and concentrated institutional positioning.

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Options Indicators

GLW’s implied volatility is 69.36%, while its IV percentile stands at 58.96%, which places current volatility conditions in a neutral range rather than an extreme one. Combined with an IV/HV ratio of 0.81, this suggests implied volatility is running below historical realized volatility, so despite the relatively high absolute IV level, current option pricing does not appear especially expensive and may even look somewhat reasonable versus the stock’s recent actual movement.

The Call/Put volume ratio is 1.67.

Large Trades

A PUT buy worth $0.45 million was the standout large trade, with 1,256 contracts purchased on the September 18, 2026 $140.00 put. With GLW referenced at $158.54, this strike sits out of the money, making it a bearish position that likely reflects either a downside speculation view over the longer term or a protective hedge against a meaningful pullback. The buyer paid premium for convex downside exposure, signaling willingness to spend for protection or for leverage to a future decline below the strike.

Overall sentiment from the full large-trade flow was bearish, with total bearish amount at $0.45 million versus bullish amount at $0.00 million, leaving a net difference of $0.45 million to the bearish side. With the only notable large trade being an out-of-the-money long-dated put purchase, the options flow points to cautious or negative positioning in GLW, suggesting traders were focused on downside risk rather than upside participation.

Strategy Reference

For traders seeking to fade this bearish signal and collect premium, selling the October 2025 $125.00 put—which sits approximately 21% out of the money and below a key support zone—could offer a wide margin of safety with a low probability of assignment in a neutral-to-bullish scenario.