How to Read the Nifty Option Chain

This guide explains each column of the option chain, how to read it, how traders use open interest, PCR and IV from the chain, and the mistakes to avoid.

How the option chain is laid out

The chain is usually split into two halves around a central strike column:

• Calls on the left, puts on the right.
• Strikes in the middle, from low to high.
• The at-the-money strike is the one nearest to the current Nifty level, usually highlighted.
• In-the-money options are often shaded: calls below the market and puts above it.

You choose the expiry at the top: the current weekly expiry, the next weekly expiries or the monthly contracts.

What each column shows

The bid-ask spread is especially important: it is the cost of trading the option. Near-the-money Nifty strikes usually have tight spreads; far strikes are wider.

Reading open interest on the chain

Open interest shows where positions are concentrated. Traders commonly read:

• The call strike with the highest OI above the market as possible resistance, because many calls have been written there.
• The put strike with the highest OI below the market as possible support.
• Large changes in OI during the day as signs of new positions being built.

These are interpretations, not rules. OI does not show whether buyers or sellers started the positions, and levels shift as traders roll positions. Our Nifty PCR guide explains how to read OI alongside price.

PCR from the chain

The put-call ratio divides total put open interest by total call open interest for the expiry. A PCR above 1 means more open interest in puts than calls. Traders read it both as a sign of put writers supporting the market and, at extremes, as a contrarian signal of crowded positioning. Compare PCR with its own recent range rather than a fixed value.

Reading IV on the chain

• IV by strike: out-of-the-money puts usually show higher IV than calls the same distance away. This skew reflects demand for protection.
• IV across expiries: an expiry just after a scheduled event often shows higher IV.
• IV over time: compare today's ATM IV with its history using the implied volatility calculator, and with India VIX for the broad level.

Using the chain to choose strikes

• Buyers often look at ATM or slightly in-the-money strikes with tight spreads and enough volume.
• Sellers often choose strikes by delta, such as 0.15 to 0.30, or beyond high-OI strikes.
• Spreads pair strikes from the same expiry, so check both legs' liquidity.

Model the chosen position in the option profit calculator before trading, and see the options Greeks for what each Greek means.

Max pain

Some option chains show max pain: the strike at which option buyers as a group would lose the most at expiry. Some traders expect expiry near max pain, but the evidence is mixed and the level moves during the week. Treat it as context only.

Common mistakes

• Trading illiquid strikes with wide spreads.
• Reading high OI as a guaranteed level.
• Ignoring IV when choosing between buying and selling.
• Using LTP as the trade price. The price you can trade at is the bid or the ask.
• Mixing expiries when comparing OI or PCR.

QuantPower's option chain

QuantPower's advanced option chain, included in every plan, shows OI, change in OI, IV, Greeks and PCR for each strike, alongside futures analysis. Prices come from your connected broker account, so they match your broker's terminal. Connect your broker to see the live chain. From the chain you can build positions, see their payoff and move them into the strategy builder to add entries, stops and exits.

Frequently asked questions

Sources

• NSE: Equity derivatives contract specifications
• NSE: India VIX
• Natenberg, S. (2014). Option Volatility and Pricing. McGraw-Hill