SK hynix closed at USD 142.87, up 4.67%.

The session’s dominant options flow was a $1.48 million net-credit call spread expiring in October 2026, built entirely from out-of-the-money strikes. Institutional activity leaned defensive, with repeated 175/195 short call spreads against 155/170 long call spreads, pointing to premium collection rather than bullish positioning.

>>>Start OPTIONS trading & earn up to SGD 200 in rewards!

Options Indicators

SK hynix has an implied volatility of 65.58%, and with an IV percentile of 43.48%, current volatility sits in a neutral historical range rather than at an extreme. In other words, options are not especially cheap or especially expensive at current levels, while the IV/HV ratio of 1.21 suggests implied volatility is running moderately above realized volatility, indicating the market is pricing in somewhat higher forward uncertainty than what has recently been observed. The Call/Put volume ratio is 4.00.

Large Trades

A call spread structure with a net credit of $1.48 million was the standout large trade, built entirely from out-of-the-money calls expiring on 2026-10-30. The position combines short 155.0 calls against long 170.0 calls, alongside a much larger short 175.0 call position against long 195.0 calls, with the additional repeated 175.0/195.0 legs reinforcing the same call-spread profile. Because this combination includes both Sell Call and Buy Call legs, it is best interpreted as a multi-leg call spread strategy, and the size should be read from the provided net credit of $1.48 million. Strategically, this points to premium collection with a bearish-to-neutral directional view, as the trader appears willing to cap upside while monetizing the belief that SKHY is unlikely to rally aggressively beyond those higher strikes by expiration. With the stock reference price at 142.87, all strikes in the structure were out of the money, underscoring a view centered more on limited upside and time decay than on chasing a bullish breakout.

Overall, the large-trade flow points to a bearish near-to-medium-term institutional tone in SKHY. The dominant activity was a sizable net-credit call spread package composed of out-of-the-money short calls financed against farther-out long calls, which is typically consistent with traders expecting muted upside, range-bound action, or at least a ceiling on gains into expiration. Taken together, the block activity suggests cautious or defensive sentiment rather than outright optimism, with positioning favoring premium income and downside-to-flat expectations over a bullish directional bet.

Strategy Reference

For sellers seeking a low assignment probability, the 175.0 call expiring 2026-10-30 remains a reasonable short strike given its distance above spot and the bearish-to-neutral institutional tone; alternatively, a 175/195 bear call spread can cap margin risk while still collecting premium.