Here's a scenario that has burned every trader at least once: A stock breaks above resistance. You jump in. It reverses violently. You lose money. What went wrong?
The breakout was real — price genuinely crossed the level. But the volume behind it was a whisper, not a roar. Retail traders were pushing a door that institutional money wasn't interested in opening.
Now imagine you could see, in real-time, exactly which 30-minute session had unusually high or low volume — compared to the 7-day average for that exact session. You'd know instantly whether a breakout had the muscle behind it. Or whether it was a trap.
That's what the Volume Scanner does.
The Core Concept: Volume Factor
Forget absolute volume numbers. A stock trading 5 lakh shares means nothing in isolation. Is that a lot? A little? You have no idea unless you know what's normal.
The Volume Scanner solves this with a single, elegant metric: Volume Factor (VF).
The Formula
Volume Factor = Today's Session Volume ÷ 7-Day Average Session Volume
A VF of 1.0 means exactly average volume. 2.0 means double the average. 0.5 means half.
Simple? Yes. Powerful? Incredibly. Here's why.
Session A (9:15-9:45 AM) typically has high volume — everyone's excited, orders pile up from overnight analysis. Session G (12:15-12:45 PM) is usually dead — traders are at lunch. If session G suddenly shows a Volume Factor of 3.0, something unusual is happening. Someone big is buying or selling while the rest of the market is eating biryani. That's the kind of insight that makes you money.
Reading the Heatmap: Colors Tell the Story
The scanner table is a color-coded heatmap. Each cell represents one session for one stock, and the color tells you everything at a glance:
Green (VF > 1.2x) — High Volume
More trading than usual. This is the color you want to see. It means institutional players, block deals, or significant news-driven activity. When you see a row lighting up green across multiple sessions — big money is building a position in that stock.
Blue (VF 0.8x - 1.2x) — Normal Volume
Standard activity. Nothing unusual. The market is behaving as expected. These stocks are trading on autopilot — algorithms and retail doing their usual thing.
Red (VF < 0.8x) — Low Volume
Less trading than normal. Warning flag. Any price movement happening on red volume is suspicious. It could reverse at any moment because there's no real conviction behind it. A stock moving up 1.5% with all-red sessions? Don't trust it. That's retail traders chasing a rumor with no institutional backing.
Gray (-1) — Session Not Yet Traded
Future sessions show -1. At 11 AM, sessions E through M haven't happened yet. Nothing to worry about — data will fill in as the day progresses.
The Sessions: Your 30-Minute Windows Into the Market
The market day is divided into 14 sessions, each corresponding to a Market Profile TPO period:
| O | 9:15 - 9:20 (Opening 5 min) | H | 12:45 - 1:15 |
| A | 9:15 - 9:45 | I | 1:15 - 1:45 |
| B | 9:45 - 10:15 | J | 1:45 - 2:15 |
| C | 10:15 - 10:45 | K | 2:15 - 2:45 |
| D | 10:45 - 11:15 | L | 2:45 - 3:15 |
| E | 11:15 - 11:45 | M | 3:15 - 3:30 (Closing) |
| F | 11:45 - 12:15 | ||
| G | 12:15 - 12:45 | ||
Every experienced trader knows the pattern: Sessions A-B are typically the highest volume (everyone executing their opening plans). Sessions G-I are the lunchtime lull. Sessions K-M see volume pick up again as traders position for the close.
When this natural pattern breaks — that's when you should be paying the most attention.
5 Practical Trading Strategies Using the Volume Scanner
Strategy 1: Confirming Breakouts
This is the most common and most profitable use. When the Intraday Scanner shows a stock breaking above IB High or yesterday's VAH, switch to the Volume Scanner and check:
- Is the breakout session green (VF > 1.2x)? Take the trade. The breakout has volume backing — institutions are participating.
- Is the breakout session red (VF < 0.8x)? Be very careful. Low volume breakouts fail more often than they succeed. This could be a trap.
Example: RELIANCE breaks above yesterday's VAH in session D. You check Volume Scanner — session D shows VF = 2.3 (bright green). This breakout is backed by institutional volume. High probability of follow-through.
Strategy 2: Spotting Institutional Accumulation
Look for stocks where multiple consecutive sessions are green — VF above 1.5x for 3 or more sessions in a row. This isn't a random spike. Someone is systematically building a large position.
Example: HDFC Bank shows VF of 1.8x in session C, 2.1x in D, and 1.6x in E. That's three consecutive sessions of heavy buying during mid-morning. Institutions are accumulating. The price move that follows could be substantial.
Strategy 3: Detecting Volume Anomalies
Sometimes a single session explodes with volume (VF > 3.0x) after a quiet day. This almost always means:
- A breaking news event (earnings, management change, regulatory action)
- A block deal (large institutional order crossing the exchange)
- An event trigger that the broader market hasn't noticed yet
Example: INFY has been trading with red/blue volume all day (VF 0.5-1.0). Suddenly, session F lights up at VF = 4.2x. Something just happened. Check the news. If it's positive — this is your entry before the crowd catches on.
Strategy 4: Avoiding Low-Volume Traps
A stock is up 1.5% on the day. Your friend messages you: "BAJFINANCE is flying!" You're tempted to jump in.
But you check the Volume Scanner. Every single session is red. VF = 0.3x, 0.4x, 0.5x across the board. The "rally" is happening on the lowest volume of the week.
This is a trap. The price move has no institutional backing. It's retail traders following each other. One large sell order and the price collapses. You saved yourself from a losing trade.
Strategy 5: Reading Lunch-Hour Volume Spikes
Sessions G-I (12:15 PM - 1:45 PM) are normally the quietest part of the day. Most traders are eating, most algorithms are dormant. Volume factors are typically 0.5x-0.8x.
When a stock shows green during lunch hours, it's almost always significant. Institutions don't eat lunch — they trade when it's cheap to do so (lower impact cost). A lunchtime volume spike is often the precursor to a strong move in sessions K-M.
Example: TCS shows VF of 0.6x for sessions A through F. Then session G (lunchtime) suddenly shows 2.1x. Institutions are quietly accumulating during the quiet hours. By session K, the stock starts moving sharply — and everyone else is now chasing.
Quick Reference: Volume Factor Cheat Sheet
| VF > 3.0x | Extremely high. Block deal, news event, or major institutional order. Check immediately. |
| VF 1.5 - 3.0x | Strong institutional interest. Good confirmation for breakouts/breakdowns. |
| VF 0.8 - 1.2x | Normal. Standard retail + algorithmic activity. Nothing unusual. |
| VF 0.3 - 0.8x | Below average. Low interest. Price moves are less trustworthy. |
| VF < 0.3x | Very thin market. Barely any trading. Avoid trading this stock in this session. |
The Killer Combo: Intraday Scanner + Volume Scanner
The Volume Scanner is powerful alone, but it becomes lethal when combined with the Live Intraday Scanner.
Here's the workflow the best traders use:
- Intraday Scanner finds the setup — Open Drive Up, IB Breakout, Single Print forming, buying tail detected.
- Volume Scanner confirms the conviction — Is the signal session showing green? Is VF above 1.5x?
- If both agree: execute. If volume doesn't confirm: skip or reduce position size.
This two-scanner approach filters out most false signals. A breakout without volume is just noise. A breakout with volume is opportunity.
Other Columns in the Scanner
7-Day Average Volume
The baseline. This is the average total daily volume over the last 7 trading days. Use it as your "normal" reference.
Today's Total Volume
How many shares have traded so far today. Compare it against the 7-day average, adjusting for time of day. If it's 1 PM and today's volume already exceeds the 7-day average — that's an unusually active day.
Price and Change%
Current price and percentage change. Combined with volume data, this tells the complete story. Price up + high volume = genuine move. Price up + low volume = suspicious.
Pro Tips for Volume Scanner Mastery
- Sort by today's volume. Click the "Today" column header to find the most actively traded stocks. These are where the action is.
- Look for the "green wall." A stock with 4+ consecutive green sessions is being accumulated. This is one of the most reliable institutional signals.
- Don't ignore the red. A stock you're bullish on showing all-red volume? Reconsider. The institutions don't agree with you.
- Check volume before checking price. Train yourself to look at the Volume Scanner first, then price. This prevents emotional decisions based on price movement alone.
- Use the historical mode. Navigate to previous days and study how volume patterns predicted the next day's moves. You'll start seeing patterns within a week.
Why Most Traders Ignore Volume (And Why You Shouldn't)
Volume analysis is the most underused tool in Indian trading. Most platforms show you a single bar at the bottom of a candlestick chart — one number for the entire day. That tells you almost nothing.
The Volume Scanner breaks the day into 14 separate sessions, compares each against a 7-day baseline, and color-codes the result. This level of granularity is what separates traders who understand what's happening from traders who are just watching what's happening.
Price tells you what happened. Volume tells you why — and whether it will continue.
See Where the Smart Money Is Moving
The Volume Scanner reveals institutional activity across 200+ NSE stocks in real-time. Session-by-session. Color-coded. No guessing.
Open the Volume Scanner →