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What is On-Balance Volume

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Nupur Wankhede

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On-Balance Volume (OBV) is a technical analysis indicator that uses volume flow to predict price movements. It's a cumulative indicator that adds volume on up days (when the price closes higher than the previous close) and subtracts volume on down days. A rising OBV suggests buying pressure, while a falling OBV indicates selling pressure.

What Is On-Balance Volume (OBV)

On-Balance Volume (OBV) is a cumulative indicator that adds volume when the price closes higher and subtracts it when the price closes lower. Rising OBV signals accumulation, while falling OBV indicates distribution. It’s a momentum-based indicator used to confirm trends.

Purpose of Using OBV

Traders and investors use OBV to:

  • Confirm price trends

  • Detect divergence (when price and OBV move in opposite directions)

  • Predict potential reversals or breakouts

  • Analyse accumulation (buying) or distribution (selling) patterns

It’s considered more effective when used alongside other indicators such as moving averages or trend lines.

How On-Balance Volume Is Calculated

The formula to calculate OBV is simple:

  • If the closing price today is higher than yesterday,
    OBV = Previous OBV + Today’s Volume

  • If the closing price today is lower than yesterday,
    OBV = Previous OBV – Today’s Volume

  • If the closing price is unchanged,
    OBV = Previous OBV

This cumulative total creates a line graph which is used to compare price movement versus volume momentum.

Example:
If a stock has an OBV of 1,000,000 and closes higher with a volume of 50,000, the next day’s OBV is 1,050,000. If it then closes lower with a volume of 30,000, OBV becomes 1,020,000.

Understanding OBV Signals

The interpretation of OBV focuses on how it behaves in relation to price:

Confirming Trend

If both price and OBV are rising, it indicates the trend is strong and supported by volume.

Bearish Divergence

If price makes new highs but OBV fails to follow, it could signal weakening buying interest and a potential reversal.

Bullish Divergence

If price falls to a new low but OBV does not, it may indicate the selling pressure is weakening and a reversal might be near.

Practical Uses of OBV in Trading

OBV is often used in various scenarios:

Breakout Confirmation

Before a breakout from resistance, a sharp rise in OBV can be a sign that volume is flowing in, supporting the breakout.

Trend Continuation

If a stock is trending upward and OBV continues to rise, it shows strong participation and may suggest the trend will persist.

Filtering False Signals

Sometimes, a price breakout without an OBV confirmation may be a false move. OBV acts as a secondary filter for such trades.

OBV vs Other Volume Indicators

Here’s how OBV compares with other popular volume-based indicators:

Indicator
Based On
Usefulness

OBV

Price change + Volume

Trend confirmation and divergence analysis

Volume Price Trend (VPT)

% price change * volume

Smoother and weighted OBV alternative

Chaikin Money Flow

Average price * volume

Measures money flow over time

Accumulation/Distribution

Price and volume data

Similar to OBV but more detailed

Each has its own strengths, and OBV is particularly valued for its simplicity.

Limitations of OBV

While helpful, OBV has certain limitations:

  • No absolute value: It’s a cumulative measure, so its level isn’t inherently meaningful without context

  • No consideration for intra-day price moves: Only the closing price matters

  • Requires confirmation: Should be used in combination with other tools

  • Subject to false signals: During sideways markets, OBV may be choppy and unclear

How to Use OBV in Charting Tools

Most trading platforms like Zerodha Kite, TradingView, or Groww offer OBV as a built-in indicator.

Steps to apply OBV on a chart (e.g., TradingView):

Step 1: Open the stock’s chart

Step 2: Click on ‘Indicators’

Step 3: Search for ‘On Balance Volume’

Step 4: Add it to the chart

Step 5: Analyse the OBV line alongside price candles

You can also draw trendlines on the OBV to spot patterns or divergence more clearly.

Key Considerations for Indian Traders

  • OBV works well in trending Indian stocks with higher liquidity

  • Use daily charts for swing trades and weekly charts for longer-term views

  • Combine OBV with RSI or Moving Averages for improved accuracy

  • Avoid relying solely on OBV during news-driven volatility

Is On-Balance Volume Leading or Lagging?

On-Balance Volume (OBV) is classified as a leading indicator—it aims to signal potential future price moves by tracking cumulative volume flow, based on the idea that volume often precedes price changes.

Despite its predictive intent, OBV isn’t flawless—it can generate false signals. That’s why it is frequently used alongside lagging indicators like moving averages to enhance reliability.

Conclusion

On-Balance Volume is a valuable indicator for traders aiming to understand the role of volume in price movement. By combining price action and volume data, it helps traders make better-informed decisions about trend strength and possible reversals.

Disclaimer

This content is for informational purposes only and the same should not be construed as investment advice. Bajaj Finserv Direct Limited shall not be liable or responsible for any investment decision that you may take based on this content.

FAQs

What does a rising OBV indicate?

A rising OBV suggests that buying pressure is increasing and the price trend may continue upward.

Yes, when OBV diverges from the price trend, it may indicate a potential reversal.

OBV is more effective for daily and weekly analysis. For intraday use, it should be combined with faster indicators.

Not directly, but changes in the OBV trend can help detect breakouts or failed moves.

No. It is best used with price action analysis and other indicators like RSI or MACD.

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Hi! I’m Nupur Wankhede
BSE Insitute Alumni

With a Postgraduate degree in Global Financial Markets from the Bombay Stock Exchange Institute, Nupur has over 8 years of experience in the financial markets, specializing in investments, stock market operations, and project management. She has contributed to process improvements, cross-functional initiatives & content development across investment products. She bridges investment strategy with execution, blending content insight, operational efficiency, and collaborative execution to deliver impactful outcomes.

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