What do gamma walls and option positioning actually show?
Positioning charts organize option exposure by strike and expiration. They help identify where the selected chain concentrates exposure, while price structure and subsequent trading determine whether those areas matter.
A useful read order
- Fix the scope
Select the ticker, expiration, and open-interest basis before comparing levels.
- Read the concentration
Use gamma, delta, and wall significance to distinguish large exposure from nearby but less meaningful strikes.
- Compare with price
Place the levels beside the underlying path and expected range, then look for confirmation or failure.
Exposure is context
Gamma describes how option delta changes as the underlying moves. Delta describes sensitivity to the underlying price. Aggregating these sensitivities across a chain produces a positioning map; it does not reveal every holder's hedge or intent.
Open interest is outstanding contracts, while volume is trading activity over a period. They are different measurements. Confirmed open interest and Estimated Live OI are separate selectable bases and should stay labeled when comparing charts.
EFI's Max Pain scope
EFI's gamma and positioning Max Pain use the selected expiration's filtered 90% probability strike window. This is an intentionally scoped product metric, not traditional all-strike Max Pain. A change in expiration, strike window, or OI basis can change the result.
Classic, aggregate, single-expiration, and wall-significance views offer different perspectives on the same research problem. A wall is a concentration to investigate, not guaranteed support, resistance, or a required settlement price.
What this cannot establish
- An exposure estimate is not a complete dealer inventory or a direct observation of future hedging.
- Comparisons require matching expiration, strike scope, source time, and OI basis.
- Price can pass through a concentrated strike without the expected reaction.