Put-Call Ratio (PCR)

In one line: The put-call ratio (PCR) compares put activity to call activity — usually by open interest — as a contrarian sentiment gauge: a very high PCR signals excessive bearishness (often bullish), and a very low PCR signals excessive bullishness (often bearish).

In simple words

The PCR divides puts by calls. A PCR above 1 means more puts than calls; below 1 means more calls than puts. Traders often read it contrarian: when everyone is buying puts (high PCR), the market may be oversold and due to bounce; when everyone is buying calls (low PCR), it may be overbought. It is a sentiment tool, not a precise timing signal.

How PCR is calculated

The most common version is PCR (OI) = total put open interest ÷ total call open interest. A value of 1.2 means there is 20% more put OI than call OI. There is also PCR (volume) = put volume ÷ call volume, which reflects the day's activity rather than standing positions. For Nifty and Bank Nifty, PCR (OI) is the more widely followed number, published on the NSE and broker platforms.

Reading PCR as contrarian sentiment

Because puts are bought both for bearish bets and for hedging, a high PCR often reflects heavy protective buying — a sign of fear that can mark a bottom. A very low PCR reflects complacent, heavily bullish positioning that can precede a pullback. This is why PCR is typically read contrarian: extreme readings suggest the crowd is one-sided and a reversal is more likely. Mid-range readings carry little signal.

PCR ranges and context

There is no universal threshold, and levels vary by instrument and regime, but as a rough guide many traders treat Nifty PCR (OI) above ~1.3–1.5 as an oversold/fear zone and below ~0.7 as an overbought/complacency zone. What matters more than the absolute number is the trend and the comparison to recent norms. A PCR rising sharply into a selloff, then flattening, can hint that the fear is peaking.

Limitations of PCR

PCR is a blunt instrument. Puts are bought for hedging as well as speculation, so a high PCR does not always mean genuine bearishness. It says nothing about which strikes hold the positioning or who is on each side. It works best as one input among several — combined with OI at key strikes, price action and India VIX — rather than as a standalone signal. Blindly buying because PCR is high has burned many traders in strong downtrends.

Practical example (Nifty)

High PCR vs low PCR (contrarian reading)

Why it matters in practice

• PCR compares put to call activity as a contrarian sentiment gauge.
• Very high PCR signals fear/oversold (often bullish); very low PCR signals complacency/overbought (often bearish).
• The trend and context matter more than any fixed threshold.
• Puts are also bought for hedging, so PCR is a blunt tool — combine it with OI, price and India VIX.

Common mistakes

• Treating a fixed PCR level as a precise buy or sell trigger.
• Ignoring that high put OI can be hedging, not genuine bearish conviction.
• Fading a strong trend on PCR alone — extreme readings can persist for a while.
• Confusing PCR (OI) with PCR (volume) — they measure different things.

What professionals do

Experienced traders use PCR only as a contextual sentiment check, never as a lone trigger. They watch the direction of PCR into a move, compare it to its recent range rather than a textbook number, and cross-reference it with OI at key support and resistance strikes and with India VIX. They know a contrarian read works at extremes but fails in trending markets, so they demand confirmation from price before acting.

Frequently Asked Questions

Sources & references

• NSE India

Educational content only — not investment advice.