Direct Answer
The share of combined advancing and declining volume that traded in advancing issues. Unlike the ratio of advancing to declining volume, it is bounded between 0 and 100, which makes extremes easy to compare across days. Readings above 50 percent mean more volume went into advancers than decliners; values far above 50 show lopsided buying volume and values far below show lopsided selling volume.
Advancing Volume Percentage: Formula, Meaning, Signals, Examples and How to Use It
How Is Advancing Volume Percentage Calculated?
The share of combined advancing and declining volume that traded in advancing issues. Unlike the ratio of advancing to declining volume, it is bounded between 0 and 100, which makes extremes easy to compare across days.
Formula: Advancing volume % = advancing volume / (advancing volume + declining volume) x 100
Inputs:
- Volume in advancing issues
- Volume in declining issues
Worked example. With 720 million shares of advancing volume and 480 million of declining volume, advancing issues account for 60.0% of that volume. The inputs are illustrative numbers, not market data.
Reading it. Readings above 50 percent mean more volume went into advancers than decliners; values far above 50 show lopsided buying volume and values far below show lopsided selling volume. Averaging it over several days smooths the daily noise.
Limits. This version leaves unchanged-issue volume out of the denominator, while other sources divide by total volume, so levels differ between data providers. Its complement is the declining volume percentage.
What is Advancing Volume Percentage?
The share of combined advancing and declining volume that traded in advancing issues. Unlike the ratio of advancing to declining volume, it is bounded between 0 and 100, which makes extremes easy to compare across days.
How to use Advancing Volume Percentage
Readings above 50 percent mean more volume went into advancers than decliners; values far above 50 show lopsided buying volume and values far below show lopsided selling volume. Averaging it over several days smooths the daily noise. A reading alone is never a buy or sell signal; it needs context from price structure, volume, volatility and the broader market regime.
Strengths
- Bounding the figure between 0 and 100 keeps extreme days on a fixed scale, so readings near either end are directly comparable over time.
- Splitting only advancing and declining volume answers a single question: of the volume that went somewhere, what share went up?
- Reproducible when the formula and data convention are fixed.
Weaknesses and limitations
- A reading near 50 can mean balanced trading or can mean both sides were small, because the percentage hides the absolute volume behind it.
- Single-day values can jump sharply from session to session, so the raw series is noisy until it is averaged over several days.
- Correlated indicators can create false confidence by repeating the same underlying information.
Editorial and risk note
This page is educational content, not individualized investment advice. It should not imply guaranteed prediction, accuracy or outperformance.
Frequently Asked Questions
Is Advancing Volume Percentage a buy or sell signal?
No. Readings above 50 percent mean more volume went into advancers than decliners; values far above 50 show lopsided buying volume and values far below show lopsided selling volume. This version leaves unchanged-issue volume out of the denominator, while other sources divide by total volume, so levels differ between data providers. A trade built on it still needs a trigger, an invalidation rule, a position size and realistic execution assumptions.
What is the best setting for Advancing Volume Percentage?
Advancing Volume Percentage is computed from volume in advancing issues; volume in declining issues, so the choices that matter are the data convention and the window it is read over. Test those across instruments, regimes and out-of-sample periods instead of fitting one historical winner.
Can Advancing Volume Percentage be used by itself?
This version leaves unchanged-issue volume out of the denominator, while other sources divide by total volume, so levels differ between data providers. Its complement is the declining volume percentage. For that reason it is read next to measures of direction, participation, valuation, liquidity and risk, not alone.
Does Advancing Volume Percentage work on every timeframe?
The calculation (Advancing volume % = advancing volume / (advancing volume + declining volume) x 100) can be run on any bar size, but behavior is not portable: a reading on a five-minute chart describes a very different market window from the same reading on a daily chart. Validate the exact timeframe before relying on it.
Why does Advancing Volume Percentage give false signals?
A reading near 50 can mean balanced trading or can mean both sides were small, because the percentage hides the absolute volume behind it. Single-day values can jump sharply from session to session, so the raw series is noisy until it is averaged over several days. Lag, noise and regime changes add to this, because market participants react to new information after the reading is calculated.
How should Advancing Volume Percentage be backtested?
Rebuild Advancing Volume Percentage from volume in advancing issues using point-in-time data, write the rules before testing, include delisted securities where relevant, model realistic fills and costs, reserve a validation sample and compare with a simpler baseline.