Nifty Option Sentiment — Live Bullish/Bearish Reading by Strike

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Note:Default selected strike prices vary with spot price changes, calculation depends on selected strikes.

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How Nifty Option Sentiment is Calculated

For every strike on the Nifty option chain, this page compares the change in Calls Open Interest (OI) versus the change in Puts Open Interest (OI) over your selected time interval.

Bullish strike: Puts OI rising sharply (put writing) or Calls OI falling sharply (call short covering). Smart money is positioning for the strike to hold or rise.
Bearish strike: Calls OI rising sharply (call writing) or Puts OI falling sharply (put short covering). Smart money is positioning for the strike to act as resistance or fall.
Neutral strike: OI changes on both sides are either offsetting or insignificant.

The result is a real-time sentiment map of the entire option chain — not just one PCR number, but every strike's individual lean.

Reading Bullish vs Bearish Strikes

Once you have the sentiment map, three patterns matter:

Cluster of bullish strikes below spot — strong support is forming. Put writers are betting these levels will hold. A cluster directly below current price is the most reliable.
Cluster of bearish strikes above spot — strong resistance is forming. Call writers are betting these levels will cap upside. The tightest cluster usually defines the day's ceiling.
Mixed sentiment around ATM — range-bound session likely. Avoid directional trades; consider iron condor or short straddle plays.

Long Buildup, Short Buildup, Long Unwinding & Short Covering — Explained

These are the four classic Open Interest (OI) patterns every F&O trader should recognise. Each one appears as a distinct combination of price movement and OI change.

Pattern	Price Action	OI Action	What It Means
Long buildup	Price up	OI up	Fresh buying entering the market. Bullish.
Short buildup	Price down	OI up	Fresh selling entering the market. Bearish.
Long unwinding	Price down	OI down	Existing buyers exiting positions. Mild bearish.
Short covering	Price up	OI down	Existing sellers exiting positions. Mild bullish.

On the strike-level table above, look for these patterns at individual strikes — especially round-number strikes near the current spot price. A strong long buildup at a strike just below spot is often one of the cleanest support signals in F&O trading.

1-Minute, 3-Minute, 5-Minute, 15-Minute — Which Interval to Use

The time interval selector at the top of this page changes how sentiment is calculated. Choose the interval that best matches your trading style and holding period.

1-Minute

For scalpers. Captures micro-shifts in option-writer behaviour almost instantly. Very responsive, but also carries the highest amount of market noise.

3-Minute

For aggressive intraday traders. Reduces some of the noise while remaining fast enough for active day-trading entries and exits.

5-Minute

The preferred setting for most intraday traders. Balances signal quality with responsiveness. Ideal for momentum trades and option-buying setups.

15-Minute

For positional and swing traders. Filters out most intraday noise and highlights only meaningful sentiment shifts across the option chain.

Related Option Analysis Tools

Use option sentiment alongside these tools for a complete F&O view:

Nifty PCR Live

Aggregate put-call ratio for the whole option chain. Use it for the big picture, then drill down here for strike-level detail.

Nifty Live Open Interest

Absolute OI by strike (not change in OI). Shows where the biggest positions are concentrated.

Nifty Change in OI

Strike-wise change in OI in tabular form. The raw data behind the sentiment tags shown on this page.

Nifty Max Pain

The strike where option writers profit most. Combine with sentiment for high-probability expiry trades.

Nifty Option Chain

Full live option chain with OI, volume, IV, bid-ask. The raw view if you want to see everything at once.

Frequently Asked Questions

What is option sentiment in Nifty?

Option sentiment is a measure of whether option writers are positioning bullishly or bearishly at each strike of the Nifty option chain. It is calculated by comparing the intraday change in calls OI versus puts OI at each strike. A strike where puts OI is rising (put writing) is bullish; a strike where calls OI is rising (call writing) is bearish.

What does 'bullish strike' mean in the option chain?

A bullish strike is one where option writers are net positioning for the price to hold or rise — either by writing puts at that strike (collecting premium on the bet that price stays above) or by short-covering existing call positions. On this page, such strikes are tagged green / bullish in the rightmost column.

What is the difference between long buildup and short covering?

Long buildup happens when price is rising AND OI is rising — new buyers are entering, signalling a fresh bullish move. Short covering happens when price is rising BUT OI is falling — existing short sellers are exiting, which still pushes price up but is less sustainable. Long buildup is the stronger bullish signal of the two.

How is option sentiment different from PCR?

PCR (put-call ratio) is a single aggregate number across the entire option chain — one PCR for all strikes combined. Option sentiment, as shown on this page, is calculated per strike. PCR tells you the overall lean; option sentiment tells you exactly which strikes are bullish, bearish, or neutral. Use PCR for the big picture and option sentiment for trade entries at specific levels.

How often is the option sentiment data updated?

Sentiment recalculates every minute during NSE trading hours (9:15 AM – 3:30 PM IST). The recalculation uses your selected interval (1, 3, 5, or 15 minutes) to compare current OI versus OI at the start of that interval window.

Can I use this for Bank Nifty and other indices?

Yes. The same tool is available for Bank Nifty and Mid Cap Nifty. The methodology is identical — only the underlying index changes.