The free options analytics tools on this page all read the same live NSE derivatives feed that drives the Gravity IV Tracker terminal. None of them needs an account, a login or a broker connection, and each one states on its own page how its numbers are computed and where that computation stops being reliable.
They fall into three groups, and the grouping is not cosmetic. Each answers a different kind of question, and most mistakes made with derivatives data come from asking one group's question of another.
The volatility tools describe what the option market is charging. The option chain, the implied-volatility chart with its per-symbol baseline, the straddle chart and the movers rankings all measure the price of expected movement rather than its direction. An implied-volatility reading against a symbol's own history tells you whether its options are expensive; the at-the-money straddle premium tells you the range being priced to expiry. Neither says which way anything goes, and reading them as directional is the standard error.
The open-interest tools describe positioning. The build-up dashboard, the call-and-put bars by strike, the strike-by-time heatmap, the call-versus-put crossover and the put-call ratio all count contracts still outstanding and where they sit. Open interest alone is directionless; paired with the price change it names what participants did, and paired with the strike it shows where writers have committed capital and have reason to defend it. This group is reported after the fact, never predicted: it describes the book, not the future.
The market-wide reference tables are constraints and context. The F&O ban list, the trading-holiday calendar, the earnings calendar, FII and DII flows, the margin calculator and the de-duplicated news feed rarely produce a view, and routinely stop one. A stock in the ban cannot be added to or rolled. A holiday moves an expiry and changes a decay profile. A result inside your expiry puts an event in the contract that you may not have priced. A hedge you assumed you could afford depends on how SPAN treats the whole portfolio rather than the leg.
This is for someone already trading Indian F&O who wants the derivative-side numbers in one place without a terminal subscription. Thin-name distortion, front-month inflation and expiry-day effects are written into the individual pages. These are analytics. Nothing on any of them is a recommendation to buy or sell, no entry or position size is implied, and no tool here knows anything about your account.
Yes. Every tool listed here is free to use, with no account, no login and no broker connection, and nothing is held back behind a trial. They read the same NSE derivatives data as the Gravity IV Tracker terminal. They are analytics tools: none of them places orders, and none of them is a recommendation to buy or sell anything.
Two of them, from different angles. The implied-volatility chart compares a symbol's current IV against its own mean-reversion baseline, which is the only comparison that means anything, since an absolute IV level is meaningless across symbols. The straddle chart converts the at-the-money premium into the range being priced to expiry.
Volatility tools measure what the market charges for expected movement: implied volatility, straddle premium, the option chain. Open-interest tools measure positioning: how many contracts are outstanding, at which strikes, and whether they were added or cut. One is about price of risk, the other about who is on which side. They answer different questions.
The option chain, volatility and open-interest tools update through the trading session as the exchange feed moves. The reference tables follow the exchange's own publication schedule instead: the ban list is published before the open, FII and DII figures arrive after the close and are provisional first. Each page states the session its numbers belong to.
A broker chain gives you the current state of one symbol. What is added here is history and cross-section: implied volatility against a symbol's own baseline, open interest over time rather than one snapshot, and rankings across the full F&O list. Those are the readings a single live chain cannot give you, whichever broker it comes from.
Analytics only. Not investment advice. Last updated .