Short buildup is when price falls AND open interest rises — fresh short positioning. We add a skew confirmation: the 25-delta put-skew must be steeper than its own 80th-percentile threshold. Skew-confirmed bearishness is harder to fade than OI-naive readings — the entire vol surface is leaning into the move.
Long Put or Bear Put Spread at the ATM strike
Pre-computed strikes appear in each X-Ray drawer below; tap a row to preview the leg layout.
Calculators on this site use the inputs you provide and the assumptions disclosed in their methodology. Returns are not promised or guaranteed. MintByte is an AMFI-registered mutual fund distributor (ARN-314872). MintByte does not issue buy/sell recommendations on specific securities — the site is an educational data and analytics platform. Not investment advice. Methodology · How we earn.