A volume bar on its own means little. A volume bar compared with the bars before it, at a level that matters on the price chart, can tell you more than any other single piece of information.
Compare, do not count
"8.8 lakh" is not high or low by itself. It is high or low only against the candles around it. Two simple comparisons do most of the work:
- Against the last 10 to 20 candles. Is this bar clearly taller than the recent bars? A bar two or three times the recent average stands out.
- Against the same time on other days. Volume is naturally heavy in the first few candles after 09:15 and again near the close, and light around lunch. A tall bar at 09:20 is normal. The same bar at 13:00 is not.
This U-shape (heavy open, quiet middle, active close) is common to most Indian index sessions. Keep it in mind before you call any bar "high volume".
Volume through a session
Here is one sample 5-minute session. Read the numbered points from left to right.
- Up
- Down
- Morning range
- Opening volume. The first candles carry the heaviest bars of the day as overnight orders are filled. Price falls, and the volume says many sellers took part.
- Dry-up inside the range. For about 18 candles price moves sideways and the bars shrink. Neither side is in control. Quiet volume in a range is normal; it is the build-up before a decision.
- Breakout on volume. One candle closes above the range high with the tallest bar since the open. Effort and result agree.
- Quiet pullback. Price dips back towards the breakout area, but volume stays low. Sellers are not pressing. The retest holds, and the trend continues.
The breakout candle
A breakout is price closing beyond a level that held before: a range high, a previous day's high, a swing low. Volume helps you judge whether the close beyond that level has participation behind it.
What a healthy breakout looks like
- The breakout candle closes beyond the level, not just its wick.
- Its volume is clearly higher than the bars inside the range, often the highest in many candles.
- The next one to three candles hold beyond the level.
- Any pullback to the level comes on lower volume than the breakout.
The last point is the retest. A breakout followed by a low-volume pullback that holds the old range high is one of the cleaner price action setups. The level that was resistance is now acting as support, and the low volume tells you sellers did not try hard to push it back.
The failed breakout
Now the opposite. In this second sample session, price pokes above the range, but the volume says something different.
- Up
- Down
- Range
- The poke. Price moves above the range high for one candle.
- Thin volume. The bar under that candle is one of the smallest of the session. Very few participants joined the move.
- Back inside. Within three candles price closes back inside the range. Traders who bought the poke are now trapped.
- The real move. Price breaks the range low, and this time the volume bars are the tallest since the open.
The lesson is simple: a breakout on thin volume is a question, not an answer. Wait for a close beyond the level with volume behind it, or for the retest. On SAHI, because index volume updates while the candle is forming, you can see a thin breakout for what it is before the candle closes.
Climax and absorption
Two more patterns are worth knowing. Both show heavy volume without the follow-through you would expect.
Climax candle
After a long move in one direction, a very wide candle prints on the heaviest volume in many candles. It looks strong, but it often marks exhaustion: the last traders who were waiting have now acted. If the next candles fail to extend the move, treat the climax as a warning, not a signal to join.
Absorption
Volume is very high, but the candle body is small and the wicks are long, usually at a known support or resistance. One side is pushing hard and the other side is absorbing all of it. If this happens at resistance during an up-move, sellers are defending the level. Watch the next candles for a break or a rejection.
| What you see | Volume | How to read it |
|---|---|---|
| Wide candle closes beyond a level | High | Breakout has participation |
| Wide candle closes beyond a level | Low | Suspect; wait for retest or follow-through |
| Pullback towards the broken level | Low | Healthy retest |
| Pullback towards the broken level | High | Breakout under pressure; may fail |
| Small body, long wicks at a level | High | Absorption; a fight at the level |
| Very wide candle after a long move | Highest in many candles | Possible climax; watch the next candles |
| Sideways range | Falling | Normal; energy building for a decision |
Checklist
- Mark the level on the price chart first. Volume only matters at a level.
- Compare each bar with the last 10 to 20 bars and with the time of day.
- Trust a breakout that closes beyond the level on clearly higher volume.
- Prefer the low-volume retest over chasing the breakout candle.
- Treat a thin-volume breakout as a possible trap.