1. Summary
As SPY’s July 7 0DTE cycle expired, dealers ended with a slight net negative delta exposure (–$760 K) and net negative GEX (–88 K), but with strong positive curvature in both delta (+$1.14 B) and gamma (+$208 M). Pin probability at $624 was elevated (5.8%), suggesting spot gravitated there into expiration.
2. Metadata & Key Flows
Spot Price: $623.57 (Prev: 625.34)
Total OI: 82.7 K
Total Volume: 473.8 K
Put/Call OI Ratio: 1.43 (put-heavy)
Vol/OI Ratio: 5.73 (moderate turnover)
P/C Volume Ratio: 0.70 (call-heavy traded flow)
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