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Volume during a pullback
A dip on fading volume tells a different story than one on heavy selling — and the price chart can hide the difference. Compare two real pullbacks and pick the quieter one from the volume.
ATR measures how far price moved. Volume measures how many were behind it — the last piece before you read a chart whole.
Two stocks pull back the same amount. One is quietly drifting lower as buyers pause; the other is being dumped as the crowd heads for the exit. On the price chart they look identical — the difference is entirely in the volume, which tells you how many people were behind the move.
The read is a ratio: the day's volume over its 20-day average. At or below 1.0× means the dip came on ordinary-to-light participation — sellers drying up, not piling in. Well above 1.0× means heavy selling. Same dip, opposite stories.
Below are pairs of real pullbacks, each with a price line and a volume panel underneath (the dashed line is that stock's 20-day average). Pick the one that dipped on quieter volume — and mind the trap, because the scarier-looking drop isn't always the noisier one.
Both stocks pulled back. Which one dipped on quieter volume? Check the volume panels.
Interactive game — compare two pullbacks and pick the quieter one. Loads with JavaScript enabled.
During a pullback, read the volume, not the size of the drop. A deep dip on fading volume is calmer than a shallow one on a wall of selling — the volume panel is where the story lives.
The ratio travels across stocks, too. A mega-cap trades 50 million shares a day, a mid-cap 500 thousand — raw counts aren't comparable, but 0.8× means "below normal" for either. One thing it reads: was participation light or heavy? Nothing about direction, only how crowded the move was.
A dip happens on volume that reads 0.8× its 20-day average. Quiet or heavy participation?
This is one of the Ten Checks — screenmytrade tracks it daily across the S&P 500. The exact rule is in the methodology.