Direct Answer
Put volume is the number of put option contracts traded during a session, summed across the strikes and expirations being measured. Each contract usually controls 100 shares. High put volume signals heavy put trading, which can come from hedging, speculation or closing positions, so volume alone does not show whether participants are bearish.
Put Volume: Formula, Meaning, Signals, Examples and How to Use It
How Is Put Volume Calculated?
Put volume is the number of put option contracts traded during a session, summed across the strikes and expirations being measured. Each contract usually controls 100 shares.
Formula: put volume = sum of put contracts traded across the chosen strikes and expirations
Inputs:
- Contracts traded in puts, by strike and expiry
- The session or period being measured
- Whether all expirations or a subset are included
Worked example. If 8,200 weekly, 5,400 monthly and 3,600 longer-dated put contracts trade in a day, put volume is 17,200 contracts. The inputs are illustrative numbers, not market data.
Reading it. High put volume signals heavy put trading, which can come from hedging, speculation or closing positions, so volume alone does not show whether participants are bearish. Compare it with the typical level for the same underlying and with call volume.
Limits. Totals differ across vendors depending on the exchanges, multi-leg handling and expirations included. Protective hedges and spread legs add volume without conveying a directional view.
What is Put Volume?
Put volume is the number of put option contracts traded during a session, summed across the strikes and expirations being measured. Each contract usually controls 100 shares.
How to use Put Volume
High put volume signals heavy put trading, which can come from hedging, speculation or closing positions, so volume alone does not show whether participants are bearish. Compare it with the typical level for the same underlying and with call volume. A reading alone is never a buy or sell signal; it needs context from price structure, volume, volatility and the broader market regime.
Strengths
- It is a model-free count, so there is no volatility assumption or pricing input behind the number.
- Put volume can be set beside call volume at the same strike, giving a direct comparison of both sides of one contract ladder.
- Reproducible when the formula and data convention are fixed.
Weaknesses and limitations
- Selling a put and buying a put are both counted as volume, so the figure cannot tell hedging purchases from premium-collecting sales.
- Expiry-day trading can produce very large counts of short-lived puts, so a spike on that day may reflect closing out rather than new demand.
- 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 Put Volume a buy or sell signal?
No. High put volume signals heavy put trading, which can come from hedging, speculation or closing positions, so volume alone does not show whether participants are bearish. Totals differ across vendors depending on the exchanges, multi-leg handling and expirations included. 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 Put Volume?
Put Volume takes these inputs: contracts traded in puts, by strike and expiry; the session or period being measured; whether all expirations or a subset are included. There is no universal best setting for the tunable ones, so test them across instruments, regimes and out-of-sample periods and favor stable parameter regions over one historical winner.
Can Put Volume be used by itself?
Totals differ across vendors depending on the exchanges, multi-leg handling and expirations included. Protective hedges and spread legs add volume without conveying a directional view. For that reason it is read next to measures of direction, participation, valuation, liquidity and risk, not alone.
Does Put Volume work on every timeframe?
The calculation (put volume = sum of put contracts traded across the chosen strikes and expirations) 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 Put Volume give false signals?
Selling a put and buying a put are both counted as volume, so the figure cannot tell hedging purchases from premium-collecting sales. Expiry-day trading can produce very large counts of short-lived puts, so a spike on that day may reflect closing out rather than new demand. Lag, noise and regime changes add to this, because market participants react to new information after the reading is calculated.
How should Put Volume be backtested?
Rebuild Put Volume from contracts traded in puts, by strike and expiry 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.