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Put-Call Ratio (PCR)

Put-Call Ratio (PCR) is the ratio of total put activity to total call activity on the option chain — usually open interest, sometimes volume — used as a rough, descriptive gauge of options-market positioning.

Quick answer: Put-Call Ratio (PCR) is the ratio of total put activity to total call activity on the option chain — usually open interest, sometimes volume — used as a rough, descriptive gauge of options-market positioning.

In simple words

PCR takes everything happening on the put side of the chain and divides it by everything happening on the call side. A PCR of 1.0 means roughly equal put and call open interest; above 1 means more puts are open than calls, and below 1 means more calls. It's a single summary number for a chain that otherwise has dozens of strikes, but that simplicity is also its weakness — it tells you a ratio, not a reason.

Purpose

PCR exists to compress a wide option chain into one comparable number that can be tracked over time and across expiries. It gives a quick read on whether puts or calls dominate open positions, which analysts use — cautiously — as one input into gauging market sentiment or crowding.

Visual explanation

Put-Call Ratio (PCR)

PCR compares total put open interest to total call open interest across the chain — a rough, descriptive sentiment gauge.

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Professional explanation

How PCR is calculated

PCR = total put OI (or volume) ÷ total call OI (or volume), usually computed across all strikes for a given expiry, though it can also be computed strike-by-strike or for a chosen strike range. NSE and most broker platforms publish this ratio directly on the option-chain page, so it rarely needs manual calculation.

Reading PCR — and why the reading is contested

Conventionally, a high PCR (many puts relative to calls) is read as bearish hedging or bearish sentiment, while a low PCR is read as bullish. But PCR is also read contrarily: an extremely high PCR can indicate the market is already heavily hedged or oversold, which some traders treat as a potential turning signal rather than a continuation signal. Both readings are used in practice, which is precisely why PCR should be treated as descriptive context, not a standalone trade signal.

OI-based PCR versus volume-based PCR

OI-based PCR reflects the standing positions accumulated over the life of the series, while volume-based PCR reflects only the day's activity and can swing sharply on a single large trade. Volume PCR is noisier but more current; OI PCR is steadier but slower to reflect a real shift in positioning. Many traders look at both rather than relying on one.

PCR near expiry

As expiry nears, PCR can move simply because OI concentrates or unwinds unevenly between puts and calls at particular strikes — for instance, heavy put writing at a round support strike can push PCR up without reflecting a broad bearish view. This is another reason to read PCR alongside the underlying OI-by-strike picture rather than as a number in isolation.

Practical example (Nifty / Bank Nifty)

Illustrative — Nifty spot 25,000, lot size 75

On the Nifty (spot 25,000) weekly chain two days before expiry, total put OI across all strikes is 3.2 crore shares and total call OI is 2.6 crore shares, giving a PCR of about 1.23 (3.2 ÷ 2.6). A trader reading this purely conventionally might call it mildly bearish-leaning; a contrarian reader might note that puts already outnumber calls by this much and treat it as a sign the downside may already be well-hedged — both are interpretations of the same number, not a fact about future price.

NSE's option-chain page displays the PCR for Nifty and Bank Nifty directly, updated through the session, alongside the underlying OI figures — most Indian traders read it from there rather than computing it manually.

Limitations

  • PCR compresses the whole chain into one number, losing which specific strikes are driving it.
  • It is read in opposite ways (bearish signal vs contrarian oversold signal) by different market participants, so it has no single agreed meaning.
  • A large hedge, spread or arbitrage position can move PCR without reflecting a directional market view.

Why it matters in practice

  • Treat PCR as one descriptive data point, not a standalone buy or sell signal.
  • Check whether an extreme PCR is driven by a few strikes rather than a broad shift.
  • Compare OI-based and volume-based PCR before drawing any conclusion.
  • Track PCR's trend across sessions rather than reacting to a single day's figure.

Common mistakes

  • Trading directly off a 'high PCR' or 'low PCR' reading without any other context.
  • Ignoring that PCR can be read both bearishly and contrarily, and picking whichever story fits a pre-existing view.
  • Comparing PCR across very different expiries or instruments as if the number means the same thing everywhere.
  • Not checking which strikes are actually driving an unusual PCR reading.

Professional usage

Professionals use PCR as one line in a broader dashboard — alongside OI-by-strike, max pain and price action — and are explicit that it is descriptive, not predictive. They watch its trend over several sessions rather than a single snapshot, and they know it can be read two ways, so they never let PCR alone drive a decision.

Key takeaways

  • PCR is the ratio of put to call open interest (or volume) on the chain — a summary sentiment gauge, not a price forecast.
  • It is read both as a bearish signal and, at extremes, as a contrarian oversold signal — there is no single fixed interpretation.
  • Use PCR alongside OI-by-strike and price action, never as a standalone trade signal.

Frequently asked questions

What is Put-Call Ratio (PCR) in options?
PCR is the ratio of total put open interest (or volume) to total call open interest (or volume) on the option chain, used as a rough gauge of whether puts or calls currently dominate positioning.
How is PCR calculated?
PCR = total put OI ÷ total call OI (or the same using volume instead of OI), typically summed across all strikes for a given expiry. Most exchanges and broker platforms display it automatically.
What does a PCR above 1 mean?
It means put open interest exceeds call open interest. Conventionally this is read as bearish-leaning sentiment, though some traders read a very high PCR contrarily as an oversold, potentially bullish, signal.
What does a PCR below 1 mean?
It means call open interest exceeds put open interest, conventionally read as bullish-leaning sentiment — though again this is a rough gauge, not a certainty.
Is PCR a reliable trading signal?
No, not on its own. It is a descriptive summary of positioning that can be read in more than one way and can be skewed by hedges or spreads, so it should be used as context, not a standalone signal.
What is a 'normal' PCR value for Nifty?
There is no fixed normal value; PCR fluctuates with market conditions and expiry, often ranging roughly between 0.7 and 1.5 in typical conditions, but extremes do occur and should be read in context.
Where can I check the PCR for Nifty options?
On the NSE option-chain page, which computes and displays PCR for Nifty and Bank Nifty directly from the live OI data.
Is PCR based on open interest or volume?
It can be based on either. OI-based PCR reflects standing positions and moves more slowly; volume-based PCR reflects the day's trading and can swing more sharply.
Why do some traders treat a high PCR as bullish?
Because an unusually high PCR can mean the market is already heavily hedged with puts, which some read as a sign that downside pressure is exhausted rather than building — a contrarian interpretation.
Does PCR change a lot near expiry?
It can, because OI unwinds and concentrates unevenly between puts and calls as strikes near or lose relevance, so PCR near expiry should be read alongside the underlying OI-by-strike detail.
Can PCR be calculated for a single strike?
Yes, some platforms show strike-wise PCR, but the commonly quoted headline PCR is usually the aggregate across all strikes for an expiry.
Should beginners rely on PCR to decide trades?
It is best used as one educational input alongside other chain data, not as a decision rule by itself — beginners should understand its limitations before giving it any weight. This is informational, not trading advice.
Why do PCR readings sometimes contradict price action?
Because PCR reflects aggregate positioning built up over time, including hedges and spreads, which does not always align with the day's actual price direction — a reminder that PCR describes positioning, not a forecast.

Voice search & related questions

Natural-language questions people ask about Put-Call Ratio (PCR).

What is Put-Call Ratio?
It's the ratio of total put open interest to total call open interest on the option chain — a quick way to summarise whether puts or calls currently dominate.
Is a high PCR bullish or bearish?
It's read both ways — conventionally bearish, since more puts are open, but some traders see an extreme high PCR as a contrarian bullish sign because the market may already be over-hedged.
Can I use PCR to predict Nifty's direction?
Not reliably on its own — it's a descriptive positioning gauge, not a forecasting tool, and should be combined with other information rather than used alone.
Where do I find PCR for Nifty?
It's shown directly on NSE's live option-chain page, calculated from the current put and call open interest.
Why does PCR change during the day?
Because open interest and volume in puts and calls shift as traders open and close positions throughout the session, especially near expiry.

Sources & references

Last reviewed 11 July 2026. Educational content only — not investment advice. Exchange rules change; verify current conventions on NSE/BSE.

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Educational content only — not investment advice. Examples use illustrative numbers and current exchange conventions that may change. Options and futures involve substantial risk. See our Risk Disclosure and SEBI Disclaimer.