Corning closed at $154.06, down 5.14%.

The session's options activity was highlighted by significant large trades, with a notable focus on a sizable out-of-the-money call sale, suggesting a market preference for premium collection over bullish directional bets.

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Options Indicators

GLW’s implied volatility is 95.92%, while its IV percentile stands at 97.21%, which places current option volatility in a clearly elevated zone. In other words, relative to its own historical range, GLW options are being priced expensively, reflecting very strong near-term uncertainty premium in the options market. Although the IV/HV ratio of 0.86 suggests implied volatility is not dramatically stretched versus realized volatility, the percentile reading still indicates that, on a historical basis, option premiums are sitting at the high end of their range.

The Call/Put volume ratio is 1.99.

Large Trades

A CALL sale worth $0.09 million was the standout large trade, with 1,828 contracts sold at the 172.5 strike expiring on 2026-07-24. With GLW referenced at $154.06, this call was out of the money, making it a bearish to neutral income-oriented position that leans against a strong upside move through the strike by expiration. Strategically, selling an out-of-the-money call typically reflects premium collection and a view that the stock is unlikely to rally enough to make the option meaningfully in the money, so the trade signals capped-upside expectations rather than outright bullish conviction.

Overall sentiment is bearish. Total bullish large-trade flow was $0.00 million, while total bearish flow reached $0.09 million, leaving a net difference of $0.09 million to the bearish side. With all of the notable flow concentrated in an out-of-the-money call sale, the options activity points to a market stance that favors premium harvesting and limited upside expectations for GLW rather than participation in a bullish breakout.

Strategy Reference

For sellers seeking low assignment probability, selecting an out-of-the-money call strike, such as the $175.00 level, could be considered, while a bear call spread using the $172.50/$180.00 strikes may offer a defined-risk alternative for those looking to limit margin requirements.