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← Back to Academy | 0DTE Algo Execution Aug 01, 2026 1 min read

How to Trade 0DTE Options with HIRO Delta Order Flow

Master high-frequency intraday order flow tracking cumulative call vs. put delta accumulation as market makers rehedge in real-time.

Decoding Intraday 0DTE Order Flow

Zero Days to Expiration (0DTE) options now account for over 40% of total S&P 500 options volume. Because 0DTE options possess extreme gamma sensitivity, institutional order flow can instantly shift intraday price direction.

What is HIRO Order Flow?

HIRO (High-Frequency Impact Range Outer Limits) measures real-time cumulative delta impact generated by option market orders. By isolating call delta accumulation from put delta accumulation, traders can see whether institutional buying or selling pressure is forcing market makers to move the underlying market.

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Track Dealer Positioning in Real Time

Stop trading blind. Access live Call Walls, Put Walls, Volatility Triggers, and sub-second HIRO order flow across 3,500+ equities instantly inside the GEXLogic Terminal.