AS open interest by strike

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

At the October 20, 2026 close, AS options within 45 days held 43,120 calls and 8,898 puts in open interest, a put/call ratio of 0.21. The biggest call strike near the money was 30 and the biggest put strike 30.

43,120
Call OI
8,898
Put OI
0.21
Put/call OI
0
Put/call volume

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

Strikeputs ← open interest → calls
31.5
31
30.5
30
29.5
29

30 carried 13,770 calls and 30 carried 3,358 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 AS pages.

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

Common questions

What is AS's open interest?

43,120 calls and 8,898 puts within 45 days at the October 20, 2026 close.

Which AS strike has the most call open interest?

30 near the money, with 13,770 contracts.

Which AS strike has the most put open interest?

30 near the money, with 3,358 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.