Option Chain Explorer
The option chain is the trader's cockpit. Read open interest to find support/resistance walls, implied volatility per strike to see the smile, and the Greeks at a glance. This is a real recent NSE end-of-day chain.
How to read the chain
Open Interest walls
The strikes with the largest call OI act as resistance (sellers defending), and the largest put OI as support. The longest bars mark where the market has placed its biggest bets.
The volatility smile
Scan IV down the strikes. It usually rises toward OTM puts (crash insurance) and forms a "smile". A single ATM IV hides this — the chain shows it.
Delta as probability
A 0.30-delta call has roughly a 30% chance of finishing in-the-money. Delta is your quick gauge of how aggressive a strike is.
About the Option Chain Explorer
The Option Chain Explorer shows a real NSE end-of-day option chain for NIFTY or BANKNIFTY, laid out call-versus-put around the at-the-money strike. It highlights the open-interest walls (the strikes where the most contracts sit, which often act as support and resistance), the implied-volatility smile across strikes, per-strike Greeks, and the max-pain point — the strike at which option buyers collectively lose the most. It is the single screen professionals scan to read positioning.
What you can do
- View calls and puts side by side, centred on the ATM strike.
- Spot the open-interest walls — the heaviest strikes that often act as magnets or barriers.
- See the IV smile: how implied volatility varies across strikes.
- Read max pain and per-strike Greeks on real end-of-day data.
How to read OI walls and max pain
If the NIFTY chain shows a huge call open-interest build-up at 24500 and a large put build-up at 23500, those strikes are the "walls" — sellers have written heavily there and price often gravitates between them into expiry. Max pain is the strike where the largest rupee value of options expires worthless; price frequently drifts toward it as expiry approaches, a tendency the chain makes visible at a glance.
Frequently asked
What is an open-interest (OI) wall?
An OI wall is a strike with an unusually large number of outstanding option contracts. Heavy call OI above the spot can act as resistance and heavy put OI below can act as support, because option writers defend those levels.
What is max pain?
Max pain is the strike price at which the total value of in-the-money options is lowest at expiry — i.e. where option buyers lose the most. Prices sometimes gravitate toward max pain as expiry nears.
What is the IV smile?
The IV smile (or skew) is the pattern of implied volatility across strikes. Out-of-the-money puts often carry higher IV than calls in index options, reflecting demand for downside protection.
Learn the concepts
Educational content only — nothing here is investment advice. Derivatives carry significant risk of loss; SEBI studies show the large majority of individual F&O traders lose money. Tapetide is not a SEBI-registered research analyst or investment adviser.