Across 5,365 sessions on SPY/QQQ/NVDA/TSLA/AMD, exhaustion-close rate climbs from 27% on calm-volume days to 49% at 1.8-2.5x volume. High relative volume is participation, not sponsorship — and order flow shows which we're looking at.

σ-distance from VWAP at 10:30 ET is the cleanest single-checkpoint probability gauge we've found for end-of-day side. Above +2σ closes above VWAP 78% of the time; the cone tightens cleanly through the day.

The framework's long-vs-short asymmetry has inverted in the current regime. 20-session data on 9 high-beta names: long ORB 31% baseline, short ORB 47% baseline, 50% with full confirmation. Short ORB is now the high-probability trade.

The 09:45 dead zone — 30 minutes after the first opening sweep where a breakout proves acceptance or gets faded. Current regime favors downside breaks holding and upside breaks failing. Trade the failed retest, not the original break.