Gap-up + RVOL ≥3

Trend-day starter. Hold from open through first 30-min consolidation. 65% probability the high is set in the first 90 min.

Gap-up + RVOL <1.5

Weak gap — high gap-fill probability (~70% within 5 days). Fade open if intraday momentum doesn't confirm by 10am ET.

Gap-down + high RVOL

Continuation candidate. Avoid the dead-cat bounce — wait for 10am low to be set, then short the failed bounce.