$SanDisk Corp.(SNDK)$ collapsed 12.63% to breach the $1,700 psychological level, leading a broader storage sector selloff triggered by sector profit-taking. Despite the sharp decline, the stock has rebounded 4.68% to $1,752.36 intraday as core AI enterprise demand remains structurally sound. This sharp drop has pushed Implied Volatility (IV) Rank (a metric showing how expensive current options premiums are compared to their historical range) to an extreme 99.99%, creating unique conditions for options practitioners. IF YOU ALREADY OWN THE SHARES For investors holding 100 or more shares who want to defend their position against short-term downside, this extreme IV setup favors executing a covered call (selling a call option against shares you alrea