Put/Call Ratio

What Is the Put/Call Ratio?

The put/call ratio (PCR) divides put volume by call volume over a given period. It can be measured across all equity options, index options only, a specific exchange, or an individual stock. The ratio reflects relative demand for downside protection (puts) versus upside speculation (calls).

A ratio above 1.0 means more puts traded than calls. Below 1.0 means more calls. The CBOE Equity Put/Call Ratio historically averages 0.65-0.70, reflecting the baseline bullish bias in equity markets.

Why It Matters for Options Traders

The PCR is used as a contrarian sentiment indicator. The assumption: retail options activity clusters at extremes — fear drives everyone into puts, complacency drives everyone into calls. Both extremes often precede reversals.

Extreme high readings (fear): A ratio significantly above 1.0 suggests panic put-buying, often near market bottoms. If everyone is already positioned for a decline, selling pressure may be exhausted.

Extreme low readings (complacency): A ratio at multi-year lows signals heavy call buying and minimal hedging, often near market tops. When retail is aggressively buying calls with no interest in protection, contrarians take note.

Index PCR vs equity PCR: Index options (SPX, SPY) are used heavily by institutions for hedging. A spike in index PCR may reflect professional hedging, not panic. Context determines what the ratio means.

Using the Ratio in Practice

Context matters. The ratio’s baseline shifts as the derivatives market evolves. Compare current readings to recent history (6-12 months), not decade-old averages. The ratio works better as confirmation than as a standalone trigger — an extreme reading combined with price action at a technical level carries more weight.

For individual stocks, the PCR signals unusual positioning. A significantly elevated PCR relative to a stock’s own history may indicate put accumulation ahead of a catalyst — either hedging or a bearish bet.