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 compresses aggregate put and call positioning into one tracked number. On a Nifty (spot 25,000) weekly chain, put OI of 3.2 crore shares against call OI of 2.6 crore gives a PCR near 1.23 — read as bearish by some, contrarian-bullish by others, making it descriptive context, not a trade trigger.
Definition of Put-Call Ratio
Put-Call Ratio is the ratio of put activity to call activity on the option chain, by open interest or volume, used as a rough gauge of options-market positioning.
Key takeaways on Put-Call Ratio (PCR)
- 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.
Put-Call Ratio (PCR) at a glance
| Measures | Put activity relative to call activity (by OI or volume) |
|---|---|
| Formula | Total put OI divided by total call OI (or volume) |
| Read from | NSE option-chain page (PCR displayed directly) |
| Above 1 | More puts open than calls; conventionally bearish-leaning |
| Below 1 | More calls open than puts; conventionally bullish-leaning |
| Extreme high PCR | Also read contrarian-bullish (market seen as over-hedged) |
| Signal type | Descriptive sentiment gauge, not a trade signal |
| Typical range | Roughly 0.7–1.5 in typical conditions (illustrative) |
Put-Call Ratio (PCR) 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.
Why Put-Call Ratio (PCR) matters
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.
Put-Call Ratio (PCR): visual explanation
PCR compares total put open interest to total call open interest across the chain — a rough, descriptive sentiment gauge.
Put-Call Ratio (PCR): 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.
Put-Call Ratio (PCR) in practice (Nifty / Bank Nifty)
Illustrative — Nifty spot 25,000, lot size 65
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 of Put-Call Ratio (PCR)
- 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 Put-Call Ratio (PCR) 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 misconceptions about Put-Call Ratio (PCR)
Misconception: PCR is a reliable standalone trading signal.
Reality: 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.
Common mistakes with Put-Call Ratio (PCR)
- 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.
How professionals treat Put-Call Ratio (PCR)
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.
Put-Call Ratio (PCR): frequently asked questions
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.
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.
Voice search questions about Put-Call Ratio (PCR)
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.
Sources & references for Put-Call Ratio (PCR)
Published 10 July 2026. Educational content only — not investment advice. Exchange rules change; verify current conventions on NSE/BSE.