This scanner combines two complementary signals. Relative Option Volume compares today’s total option volume to the exponential moving average (EMA) — a value of 5x means five times normal activity. V/OI Percentile shows where today’s volume-to-open-interest ratio ranks vs. that stock’s own 252-day history. High readings on either often precede earnings surprises, M&A announcements, or other catalysts.
V/OI Ratio — Today’s option volume divided by total open interest. High V/OI means heavy trading relative to existing positions, often signaling new directional bets rather than position management. The %ile column is a rank-based reading of where today’s V/OI sits among the past 252 trading days for that stock — 95+ = today is in the top 5% of days, robust to one-off outliers.
Relative Opt. Vol. — Today’s option volume divided by the avg (EMA). Higher = more unusual.
Call vs Put Vol. — Compare call and put volume to gauge directional bias.
Relative Stock Vol. — Confirms whether stock volume also spiked, or if the action is options-only.
Click column headers to sort. Use search to filter by symbol or company. (Full features require a free trial.)
Relative Option Volume
(today's volume vs. its EMA — the Relative Opt. Vol. column)
Extreme (10x+)
High (5x–10x)
Moderate (2x–5x)
Normal (< 2x)
V/OI Percentile
(today's V/OI vs. its own 252-day history — the V/OI %ile column)
Extreme (≥ 95th)
High (80th–95th)
Moderate (50th–80th)
Normal (< 50th)
Showing top 25 of 3101 stocks by relative option volume.
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