Educational only, not financial advice or a strategy recommendation. Options strategies carry risk, including of substantial loss. The strategies here are explained for understanding, not endorsed.
A 0DTE butterfly is a low-cost, defined-risk structure that profits if SPY finishes near a chosen strike — a cheap way to target a specific level (like a pin) into the close. See the general butterfly spread for the full mechanics.
How it works
A long butterfly buys one option, sells two at a middle strike, and buys one further out — a cheap debit with max profit if SPY finishes at the middle strike. It costs little (defined, small risk) and pays a large multiple if you nail the target. On 0DTE, traders place the body at an expected pin strike to bet on the close pinning there.
The appeal and the catch
The appeal: tiny defined cost, big payoff if right — a favorable risk/reward on a precise target. The catch: you need SPY to finish near a specific strike, which is uncertain; most butterflies expire for a small loss (the debit), with occasional big wins. It’s a low-win-rate, high-payoff structure — the opposite of a condor.
A butterfly is a cheap, precise bet: risk a little to win a lot if SPY lands on your strike. Usually it doesn’t; when it does, it pays.
Where the dealer map comes in
A butterfly is a bet on a specific closing level, and the levels worth aiming at are the ones dealer positioning has already built: the strike carrying the heaviest open interest, the call and put walls, the centre of the expected-move band. NoVo maps those live, so the target you pick is a structural one rather than a guess. Variants include the broken-wing butterfly and the iron fly.