PTC open interest by strike

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

At the October 20, 2026 close, PTC options within 45 days held 5,090 calls and 3,789 puts in open interest, a put/call ratio of 0.74. The biggest call strike near the money was 200 and the biggest put strike 190.

5,090
Call OI
3,789
Put OI
0.74
Put/call OI
11
Put/call volume

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

Strikeputs ← open interest → calls
200
195
190
185

200 carried 2,992 calls and 190 carried 3,194 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 PTC pages.

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

Common questions

What is PTC's open interest?

5,090 calls and 3,789 puts within 45 days at the October 20, 2026 close.

Which PTC strike has the most call open interest?

200 near the money, with 2,992 contracts.

Which PTC strike has the most put open interest?

190 near the money, with 3,194 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.