Put/Call Ratio

The put/call ratio (PCR) is calculated by dividing the number of put options traded by the number of call options traded over a specified time period — typically one trading session or a rolling average. A ratio above 1.0 means more puts than calls were traded (net bearish positioning); below 1.0 means more calls than puts (net bullish positioning).

For the broad market (using the CBOE Total Put/Call Ratio), the historical average is around 0.7 — meaning calls typically outnumber puts by approximately 40%, reflecting the structural bullish bias of equity markets and the prevalence of covered call writing strategies. Context-adjusted interpretation requires knowing the baseline: what is "high" PCR for one stock may be normal for another.

PCR as a Contrarian Indicator

At market extremes, PCR is often used as a contrarian indicator. Extremely high PCR readings (many more puts than calls, indicating heavy bearish positioning) sometimes precede market recoveries — because when everyone who wanted to buy puts has bought them, the marginal buyer is exhausted and selling pressure may abate. Similarly, extremely low PCR (heavy call buying, extreme bullishness) sometimes precedes corrections. This contrarian interpretation works best at sentiment extremes, not as a routine day-to-day signal.

PCR in Individual Stock Analysis

For specific tickers, an unusual PCR spike — significantly above the stock's 30-day average — can signal hedging activity or directional bearish positioning ahead of a catalyst event. When a stock's PCR doubles before an earnings report or an FDA decision, it indicates that options market participants are paying up for downside protection. Combined with other signals, this is a useful risk context input. TradeAI News incorporates PCR anomalies alongside broader options flow analysis in its TMS signal scoring.