What you can do here
This heatmap is not an underlying or sector treemap. Cells represent strike values from the selected option structure and change with the metric mode. Each strike cell combines the call and put legs for that strike; in OI Change mode the value is the net of the two changes, so an increase on one side can be offset by a decrease on the other. Confirm the underlying, expiry and date first: the captured viewport does not visibly resolve all that context, so anonymous strike values should not be attributed to a stock or index.
- Compare concentrations across strikes within one options context.
- Click a strike cell to inspect the corresponding structure.
A look inside F&O Heatmap
From numbers to understanding
- 01
OI, OI Change and Volume answer different questions; OI Change can net a call increase against a put decrease at the same strike.
- 02
Cell labels are strikes and metric values, not sector returns.
- 03
Colour intensity conveys the selected measure rather than a universal bullish/bearish score.
- 04
A cell click targets strike context; exact option identity still requires CE/PE and expiry.
NIFTY STRIKE COMPARISON
Illustrative walkthroughIllustrative workflow: select NIFTY and an available expiry, compare OI with OI Change, then open a strike. No sector rotation, underlying count or observed NIFTY wall value is inferred from this screenshot.
Try it, one step at a time
Use these checkboxes as a reading checklist. They do not perform actions in Prime.
What this does not tell you
An OI concentration is not guaranteed support/resistance and does not disclose whether positions are hedged.
Analysis, not advice. Past performance does not predict future results. Examples are illustrative; prices, scores and counts may have changed.
Read the full disclaimer ↓