Ticker&TapeHow to read volume
Volume is the number of shares traded in a period. Price tells you what happened, volume tells you how much conviction was behind it. Big moves on big volume usually mean big investors are involved.
What volume tells you
Mutual funds, pension funds and other institutions buy and sell millions of shares. They cannot hide that activity, so it shows up as volume. When a stock rises on heavy volume, demand is strong. When it falls on heavy volume, someone large is selling.
A move on light volume says less. A price rise with few shares traded can fade quickly because nobody important is pushing it.
Compare with the 50-day average
Raw volume numbers mean little on their own. Two million shares is huge for one stock and tiny for another. That is why traders compare each day with the 50-day average volume, the line drawn through the volume bars on the Ticker&Tape chart.
Relative volume is today's volume divided by that average. A reading of 1.5 means 50% above normal; 0.5 means half of normal. You can add a relative volume panel on the chart with the Indicators button. Intraday, keep in mind that volume builds through the session, so compare with the time of day.
Up days vs down days
On the chart, volume bars are colored by the day's direction: up-colored when the stock closed higher, down-colored when it closed lower. Scanning the colors over a few weeks tells a story.
In a healthy stock, the biggest volume bars come on up days and down days are quiet. In a stock that is topping, heavy volume shows up on down days and rallies are on light volume. The data box shows the up/down volume ratio, which sums this up over 50 days. See accumulation and distribution.
Quiet volume can be good news
Low volume is not always bad. When a stock is building a base, volume often dries up near the lows and in the handle. That shows sellers are exhausted: the people who wanted out are gone. A volume dry-up followed by a jump in volume on a breakout is a classic pattern, covered in volume on breakouts.
A few quick rules
- Breakouts should come with volume well above average.
- Pullbacks should come with volume below average.
- Heavy volume with little price progress (churning) is a warning.
- A big-volume drop through support or the 50-day line deserves attention.
Common mistakes
- Judging volume by raw share count instead of against the stock's own average.
- Comparing morning volume with a full-day average and calling it weak.
- Ignoring the color of the volume bars and missing heavy selling.
Key points
- Volume measures conviction; heavy volume means institutions are active.
- Always compare volume with the 50-day average or relative volume.
- Healthy stocks rise on heavy volume and pull back on light volume.
On Ticker&Tape today
Live examples from the latest close, updated every trading day. Examples, not recommendations. 2026-10-02
Check what you learned
Answer at least 2 of 3 correctly to complete the lesson.
1. A stock traded 2 million shares today. Is that heavy volume?
Raw numbers mean little. Two million shares is huge for one stock and tiny for another, so always compare with the stock's own average.
2. What does a relative volume reading of 1.5 mean?
Relative volume is today's volume divided by the 50-day average. 1.5 means 50% above normal; 0.5 means half of normal.
3. Which volume pattern fits a healthy stock?
Healthy stocks rise on heavy volume and pull back on light volume. Heavy volume on down days is what topping stocks show.
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