SK hynix closed at USD 181.92, down 5.03%.

Despite the sharp single-day decline, institutional options flow leaned bullish. A $2.60 million put sale highlighted the session, as a trader sold 1,440 contracts of the December 18, 2026 $180.00 put. With the strike just below spot, the large trade signaled confidence that SK hynix would hold above $180.00 through late 2026. No offsetting bearish block trades appeared, reinforcing a constructive large-trader tone.

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Options Indicators

SK hynix currently has an implied volatility (IV) of 61.03%, while its IV percentile stands at 5.56%, indicating that although the absolute IV level is not low, it sits near the bottom of its own historical range. In other words, recent option pricing reflects relatively subdued volatility conditions versus its past behavior, and options appear cheaply priced rather than expensive. With the IV/HV ratio at 1.00, implied volatility is broadly in line with realized volatility, suggesting current premiums are roughly consistent with the stock’s actual movement profile.

The Call/Put volume ratio is 1.48.

Large Trades

A put sale worth $2.60 million stood out as the key large trade, with 1,440 contracts sold on the December 18, 2026 $180.00 put. With SKHY referenced at $181.92, the strike sat slightly out of the money at execution, making this a moderately bullish position. Selling this put suggests the trader was comfortable taking on downside assignment risk near $180.00 while expressing the view that the shares are likely to stay above that level through expiration, or at least that downside will remain limited enough for premium collection to work in their favor.

Overall, the large-trade flow points to a bullish bias. The only notable block was an out-of-the-money put sale, which typically reflects constructive sentiment, willingness to accumulate exposure on weakness, and confidence that the stock can hold near current levels rather than break materially lower. With no meaningful bearish large-trade activity offsetting it, the bulk-order profile indicates investors were leaning positively on SKHY.

Strategy Reference

For a lower assignment probability than the traded $180.00 strike, sellers could consider the December 2026 $160.00 put, though premium would be materially smaller; alternatively, a $160.00/$150.00 put credit spread reduces margin requirements while still expressing a limited-downside view.