A open interest by strike

From the closing options book · October 20, 2026 · updated after every close

At the October 20, 2026 close, A options within 45 days held 4,181 calls and 1,751 puts in open interest, a put/call ratio of 0.42. The biggest call strike near the money was 175 and the biggest put strike 170.

4,181
Call OI
1,751
Put OI
0.42
Put/call OI
0.43
Put/call volume

A open interest by strike, within 5% of the close

Strikeputs ← open interest → calls
180
175
170
165

175 carried 1,288 calls and 170 carried 698 puts.

Open interest counts contracts still open after the close; it settles overnight. Large strikes are where dealer hedging is concentrated, which is why open interest feeds the gamma levels and max pain on the other A pages.

These are the October 20, 2026 closing numbers. Members see A's map move live all session.

Common questions

What is A's open interest?

4,181 calls and 1,751 puts within 45 days at the October 20, 2026 close.

Which A strike has the most call open interest?

175 near the money, with 1,288 contracts.

Which A strike has the most put open interest?

170 near the money, with 698 contracts.

Compare: open interest by strike on other tickers

Measured from the closing options book and rebuilt after every close. Nothing on this page is live. Levels are where dealer hedging is concentrated, not targets or forecasts. Not investment advice.