Strike History
One strike's call and put, day by day, from the contract's first session to expiry — premium, open interest and what each day's combination meant.
What this page shows
Pick a strike and see, day by day, what its call and put did from the day the contract was listed until it expires: the premium's open, high, low and close, how much open interest built up or unwound, and what that combination usually means — long build-up, short covering and so on. The chart draws the premium over the open interest so the shape of a position is visible at a glance. It works for NIFTY, BANK NIFTY, SENSEX and every F&O stock, at any listed expiry — and at expired ones from at least the last six months, so a finished contract can be read from listing to its last session.
Watch the tutorial
Strike History, section by section, in a 2-minute video, also in Hindi, Tamil, Telugu, Kannada and Malayalam.
How to read it
- Lines and bars — the lines are the closing premium of the call (green) and the put (red); the bars behind them are their open interest. Premium sliding while the bars grow means writers are pressing; premium rising with the bars means buyers are. Both, CE or PE at the chart's corner shows the two sides together or one at a time.
- Picking the strike — Index or Stock, the symbol, the expiry (expired contracts sit under Expired in the list) and the strike — the − and + buttons step one strike down or up, and the chip beside them says when the contract was listed and how many sessions it has run.
- OI Interpretation — each session gets one of four labels from the direction of premium and open interest that day: Long Build Up, Short Build Up, Short Covering or Long Unwinding. A day where either did not change carries no label.
- Since listing — the ledger starts on the contract's first traded session, so a wall in the option chain can be traced back to the days it was built. The listing day has no change columns — there is nothing before it to compare with.
- Today's row — during market hours the newest row is provisional and refreshes every minute; it becomes final after the session's daily candle prints.
- Lots or quantity — open interest is shown in raw quantity by default; switch to lots with the toggle above the tables. The raw quantity always stays on hover.