Unusual Volume Stocks

Unusual volume means a stock is changing hands far more than it usually does. Measuring that as a simple multiple of average volume flatters small, thinly traded names, so this scan measures it statistically instead: it lists US-listed stocks whose volume today sits more than three standard deviations above their own 60-session average, restricted to names already turning over at least $10 million a day. Because the comparison is against each stock's own history, a mega-cap and a small-cap have to clear the same bar. Volume tells you attention arrived, not which way price went — a spike accompanies breakouts, breakdowns, earnings, index changes and share offerings alike, so the list is a starting point for asking what happened rather than a directional signal.