F&O intelligence
Research tool · not investment advice. Full disclaimer →
Understanding F&O measurements
how to read the displayed observationsSource: Metric definitions and data limitations.
Methodology
The derivatives book says where positions stand — never what happens next. Descriptive only. What this workspace can and cannot know →
Evidence · hover a tag for what it means: observed: exchange-reported contracts, prices and open interestderived: ratios, percentiles and expiry shares glossary →
Bottom lineThe derivatives book says where positions stand — how much is open, at which strikes, on which expiry, and which participant class holds each side where the exchange publishes it. It does not say what happens next, and this workspace never claims it does. Descriptive only.
Honest boundaryEvery contract has a long AND a short, so aggregate open interest can never identify who traded or which option legs belong together; the displayed measurements do not establish a forward return · descriptive, not a signal.
Dates and sources
Market observations come from exchange records. Each view displays its observation date. Weekends and exchange holidays retain the latest recorded trading session; missing observations are shown as unavailable.
Reading the measurements
Open interest is the number of outstanding contracts. Put/call ratios compare put and call open interest. Expiry shares show how the recorded book is distributed across contract dates. Percentiles compare a measurement with its recorded history.
Implied volatility is calculated from option prices under model assumptions. A concentration of open interest does not establish future support or resistance.