0DTE SPX Options Flow: What Matters Intraday
How to read same-day SPX and index options flow without confusing hedging, gamma, and directional positioning.
What makes 0DTE different?
0DTE options have high gamma, rapid theta decay, and strong sensitivity to small index moves. Large SPX prints can be hedges, dealer inventory adjustments, spreads, or intraday directional bets.
Signals to prioritize
Prioritize package structure, execution timing, repeat flow, strike clustering, size versus OI, and whether flow is concentrated in puts, calls, or balanced structures. A single same-day leg often needs context before it is actionable.
Index flow versus single-name flow
Index flow often reflects portfolio hedging or macro positioning, while single-name flow is more likely to connect to company-specific catalysts, earnings, or idiosyncratic risk.
How OptionsTape.Trade labels it
Index channels separate SPX, SPXW, SPY, VIX, QQQ, NDX, RUT, and IWM from single-name flow so the user does not mix macro hedging with equity-specific unusual activity.