BTC's 80000 Call Tape Is Seller-Led Even As Strike OI Reads Bullish

The Nov 20 2026 80000 call lit up the taker-flow scanner with a z-score of 10.5, and the tape says seller, not buyer. Over 24h, buyerAggression on that strike was 0.012 — buyers took $1.9k of premium, sellers pushed $150.5k, netting -$148.6k. Taken alone, the strike's 24h OI delta (+93 contracts, part of a book-wide "call_buying" tilt across the expiry) would read bullish. The tape disagrees.

The selling isn't isolated. Three other strikes on the same expiry carry near-identical seller skew, two of them tied to block trades with matching notional, suggesting a multi-leg combo rather than four independent directional bets:

Strike/Type	Net Premium (24h)	Buyer Aggression	Block Trades
76000 P	-$212,929	0.052	2
80000 C	-$148,637	0.012	2
77000 C	-$101,991	0.074	1

Expiry-wide, sellers dominated the full 24h tape ($1.08M sold vs $200k bought). The 80000 call's OI growth looks less like fresh bullish positioning and more like dealers or block desks writing calls into strength, with the strike-level OI print obscuring who actually initiated.