SPY gaps above call wall but negative GEX and fading futures cap conviction

All three major ETFs are gapping higher at Tuesday's open — SPY by +0.35%, QQQ by +0.53%, and IWM by +0.48% versus Monday's closing prices — but the overnight futures picture is more nuanced than the cash gap implies. /ES is sitting at roughly the top of its globex range with a recent trajectory that has gone flat, and SPY's pre-market last of 768.06 is already trading above its own call wall of 766.0.

Here's the tension: the options market is net negative gamma on all four major indices, meaning dealers are short gamma and price swings can be amplified in either direction once the cash session opens. SPY's 0DTE volume is 74.7% of total activity and price is within 0.27% of max pain at 766.0 — a structural force pulling price back toward that level. The gap may struggle to hold.