Put/Call Ratio
A sentiment indicator that compares the volume of put options traded to call options traded, used to gauge overall market sentiment.
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Explained Simply
The put/call ratio divides the total number of put options traded by the total number of call options traded over a given period. A ratio above 1.0 means more puts are being traded than calls, suggesting bearish sentiment. A ratio below 0.7 suggests bullish sentiment. Contrarian investors often use extreme readings as reversal signals — very high put/call ratios can indicate excessive fear (a buying opportunity), while very low ratios can signal complacency (a warning sign). The CBOE publishes daily equity-only and total put/call ratios, and traders often watch 5-day or 10-day moving averages to smooth out noise.
How to Read and Interpret the Put/Call Ratio
The put/call ratio is simple to calculate but requires context to interpret correctly.
Basic reading: Ratio = Total Put Volume / Total Call Volume. A ratio of 1.0 means equal put and call volume. Above 1.0 = more puts (bearish sentiment). Below 1.0 = more calls (bullish sentiment). The "normal" range for the equity put/call ratio is 0.60-0.80.
CBOE publishes three versions: (1) Equity-only put/call ratio — measures sentiment on individual stocks, most useful for gauging retail and institutional trader positioning. (2) Index put/call ratio — measures hedging activity on SPX/SPY options, often elevated because institutions routinely buy index puts for portfolio insurance. (3) Total put/call ratio — combines both, but can be noisy.
Smoothing: Daily readings are volatile. Most traders use a 5-day or 10-day moving average to identify trends. A 10-day moving average of the equity put/call ratio above 0.90 signals significant fear. Below 0.55 signals complacency.
Extreme readings: Equity put/call ratio above 1.0 = extreme fear (historically a contrarian buy signal). Below 0.50 = extreme complacency (warning of potential pullback). During the March 2020 COVID crash, the equity put/call ratio spiked above 1.5. During the late 2021 meme-stock mania, it dropped below 0.40.
Put/Call Ratio as a Contrarian Indicator
The put/call ratio is one of the most reliable contrarian sentiment tools because it measures what traders are actually doing with their money, not just what they say in surveys.
Why contrarian works: When everyone is buying puts (high ratio), hedging demand is maxed out, meaning most of the selling pressure has already occurred. Conversely, when everyone is buying calls (low ratio), bullish positioning is crowded and there are few buyers left to push prices higher.
Historical track record: Buying the S&P 500 when the 10-day equity put/call ratio exceeds 0.95 has produced above-average forward returns over 1-month, 3-month, and 6-month periods. Conversely, readings below 0.55 have preceded below-average returns.
Confirmation, not standalone: The put/call ratio works best when combined with other sentiment indicators (VIX, breadth, AAII survey) and price action (support/resistance levels, oversold RSI). A high put/call ratio during a price decline that holds at a key support level is a stronger buy signal than the ratio alone.
Sector-level analysis: The put/call ratio can be calculated for individual stocks or sectors. If a stock's put/call ratio spikes well above its normal range ahead of earnings or a catalyst, it reveals unusual hedging or directional bets that may provide a trading signal.
How to Use Put/Call Ratio
- 1
Find the Put/Call Ratio
Check the CBOE put/call ratio (equity, index, or total) on CBOE's website or your broker platform. It's calculated as: Total Put Volume ÷ Total Call Volume. Values above 1.0 mean more puts are trading; below 1.0 means more calls.
- 2
Interpret Extreme Readings
P/C ratio above 1.2 = excessive put buying = extreme bearishness → contrarian bullish signal. P/C ratio below 0.6 = excessive call buying = extreme bullishness → contrarian bearish signal. Use the equity-only ratio (excludes hedging noise from index options) for cleaner signals.
- 3
Use as a Contrarian Indicator
The put/call ratio works best as a contrarian tool. When everyone is buying puts (ratio >1.2), fear is peaking and a bounce is likely. When everyone is buying calls (ratio <0.6), complacency is high and a pullback is likely.
- 4
Track the 5-Day Moving Average
A single day's ratio can be noisy. Smooth it with a 5-day moving average for clearer signals. The 5-day average above 1.0 for 3+ consecutive days is a strong contrarian buy signal. Below 0.65 for 3+ days is a warning signal.
- 5
Combine with Market Structure
The most powerful signals occur when extreme put/call readings align with key support/resistance levels. A P/C ratio of 1.3 with the S&P 500 at major support = high-probability bounce. A P/C ratio of 0.5 with the S&P 500 at resistance = high-probability pullback.
Frequently Asked Questions
What is the put/call ratio?
The put/call ratio divides the total volume of put options traded by the total volume of call options traded over a given period. A ratio above 1.0 means more puts (bearish bets or hedges) than calls (bullish bets) are being traded, indicating bearish or cautious sentiment. A ratio below 0.7 indicates bullish sentiment. The CBOE publishes daily equity-only and total put/call ratios.
Is a high put/call ratio bullish or bearish?
A high put/call ratio (above 1.0) indicates bearish sentiment in the market — many traders are buying puts for downside protection or bearish bets. However, as a contrarian indicator, extremely high readings often signal that fear is peaking and a rally may follow. Most traders interpret extreme readings (above 1.0) as a contrarian buy signal, especially when combined with oversold price action.
What is the normal range for the put/call ratio?
The equity-only put/call ratio normally ranges from 0.60 to 0.80. Readings below 0.50 indicate extreme bullish sentiment (complacency). Readings above 0.95-1.00 indicate extreme bearish sentiment (fear). The total put/call ratio (including index options) tends to run higher because institutional portfolio hedging adds put volume. Most traders watch a 5-day or 10-day moving average to smooth daily noise.
How Tradewink Uses Put/Call Ratio
Tradewink monitors the put/call ratio as part of its multi-factor sentiment analysis system. When the ratio reaches extreme levels, the AI adjusts its conviction scores accordingly — elevated put/call ratios boost bullish signal confidence as a contrarian indicator. The data feeds into the broader Fear and Greed composite alongside VIX, breadth, and options flow metrics.
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See Put/Call Ratio in real trade signals
Tradewink uses put/call ratio as part of its AI signal pipeline. Get daily trade ideas with full analysis — free to start.