Corning closed at USD 151.45, a 0.66 percent decline.

Large options activity leaned entirely bearish, with $3.27 million in put buying and no bullish large trades. The biggest print was a $2.68 million deep in-the-money put purchase, followed by a $595,000 out-of-the-money put buy. Both trades point to institutional positioning for further downside or hedging against continued weakness, leaving a clearly negative net flow imbalance in GLW.

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Options Indicators

GLW’s implied volatility is 64.30%, while its IV percentile stands at 51.39%, which places current volatility conditions in a neutral range rather than an extreme one. In other words, option premiums do not appear especially cheap or especially expensive versus their own recent history. At the same time, the IV/HV ratio of 0.70 indicates implied volatility is running below realized volatility, suggesting the market is not attaching an aggressive premium to upcoming price swings.

The Call/Put volume ratio is 0.59.

Large Trades

A PUT buy worth $2.68 million was the largest displayed trade, with 1,406 contracts of the August 21, 2026 $170.00 put purchased. With GLW referenced at $151.45, this strike is in the money, making it a clearly defensive or bearish position with substantial intrinsic value already embedded. The trade points to expectations for further downside or to a protective hedge against continued weakness, and the in-the-money structure suggests the buyer wanted higher delta exposure rather than just cheap tail-risk protection.

A PUT buy worth $595,000 was the second highlighted trade, with 5,000 contracts of the September 18, 2026 $120.00 put purchased. This strike is out of the money versus the $151.45 reference price, so the position looks more like a lower-cost bearish speculation or downside hedge targeting a more pronounced decline over time. Compared with the larger in-the-money put purchase, this trade expresses a more conditional downside view, but it still reinforces the same negative directional bias around GLW.

Overall sentiment is bearish, with total bullish large-trade flow at $0.00 million versus bearish flow at $3.27 million, leaving a net bearish imbalance of $3.27 million. The conclusion is straightforward: institutional-sized activity was entirely concentrated in put buying, with no offsetting bullish large trades, and the mix of one deep in-the-money bearish hedge/speculation and one out-of-the-money downside bet suggests traders are positioning for continued weakness rather than recovery.

Strategy Reference

For traders who prefer a lower-margin defined-risk structure, a bear put spread using the September 18, 2026 $120.00 long put and selling a lower strike such as the $100.00 put could reduce cost while still targeting a pronounced decline; alternatively, a seller comfortable with lower assignment probability may look at puts below the $120.00 strike given the already bearish positioning.