Western Digital Corporation closed at $544.84, up 2.21% from the previous close.

A dominant bearish tone emerged from the options market, headlined by a single $8.36 million short call trade at the $590.00 strike. With implied volatility sitting at an elevated 90.84th percentile, the massive premium sale against a distant upside target signals a strong conviction that the stock’s upside will be limited through mid-2026.

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Options Indicators

WDC’s implied volatility is 102.67%, and with an IV percentile of 90.84%, current option volatility sits in a clearly elevated zone, indicating that options are priced expensively relative to their own recent history. At the same time, the IV/HV ratio of 0.98 suggests implied volatility is broadly in line with realized volatility rather than meaningfully stretched above it, so while premiums are rich on a historical percentile basis, they are not dramatically detached from the stock’s actual movement pattern. The Call/Put volume ratio is 0.80.

Large Trades

A CALL sale worth $8.36 million was the standout large trade, with 2,200 contracts sold at the $590.00 strike expiring on August 21, 2026. With WDC referenced at $544.84, the strike sits out of the money, making this a bearish-to-neutral positioning that suggests the trader does not expect the shares to rally above that level by expiration. As a single-leg short call, the strategy likely reflects either premium collection or a capped bearish view, with the seller taking in option premium while expressing skepticism about substantial upside over the longer-dated horizon.

Overall, the large-trade flow in WDC was clearly bearish. The activity was entirely dominated by downside-leaning positioning, with no offsetting bullish large trades appearing in the data, which points to institutional sentiment that is either cautious on further upside or actively leaning against a sustained advance. The concentration in an out-of-the-money call sale further reinforces the view that the market’s large traders are positioning for limited upside and a softer directional outlook in WDC.

Strategy Reference

Traders looking to mimic the institutional bearish-to-neutral stance with defined risk could consider selling a $600/$610 call vertical spread expiring in the same August 2026 cycle, which caps margin while capturing rich premiums from the elevated IV percentile.