Zero DTE (0DTE)

What is Zero DTE (0DTE)?

Zero DTE (0DTE) Zero Days to Expiration (0DTE) options are option contracts that expire on the same trading day they are traded. SPX, SPY, QQQ, IWM and several major ETFs added daily expirations across all weekdays starting in 2022. By 2024, 0DTE volume had grown to over 45% of total SPX options volume — the fastest-growing product in equity derivatives. 0DTE options have unique characteristics that distinguish them from longer-dated contracts: Theta is the entire premium. An at-the-money 0DTE option's premium decays to zero by the market close. Theta runs at 50-100% of remaining premium per day, vs 3-5% for 30-DTE options. Gamma is enormous. ATM 0DTE options have 5-10x the gamma of equivalent-strike 30-DTE options. Small intraday moves produce massive swings in option prices — a 0.5% SPX move in the final hour can produce 200-300% returns on an ATM 0DTE option. Vega is near zero. With no time for IV changes to take effect, 0DTE options are essentially insensitive to volatility shifts. Strategies that work well on 0DTE: defined-risk premium selling (iron condors, credit spreads) entered mid-morning and closed by 3pm. Strategies that work poorly: systematic directional buying (loses ~80% of the time per JPMorgan retail data); naked premium selling (a single bad close can wipe out months of profits). 0DTE has reshaped dealer hedging patterns. The aggregate gamma exposure on SPX changes hour-by-hour as 0DTE positions are opened and closed, creating new intraday volatility patterns that didn't exist before 2022. The "afternoon vol effect" (rising intraday vol from 2-4pm) is widely attributed to 0DTE dealer hedging dynamics. For retail traders, the key disciplines are: never trade 0DTE naked (always use defined-risk structures); avoid new entries after 2:30pm ET; size at 1/4 to 1/2 of normal due to gamma magnification; have a hard stop-loss and exit on time, not just on price.