OITracker Cboe delayed data

Contract OI history

Back to CME

Oct 23, 2026 EXPIRATION

CME $255.00 Put

CME261023P00255000

Latest saved OI38Oct 23, 2026
Last change0vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
CME $255.00 put open interest history 7 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 38190 2026-10-09: 18 OI2026-10-13: 18 OI2026-10-14: 28 OI2026-10-15: 28 OI2026-10-16: 28 OI2026-10-21: 38 OI2026-10-23: 38 OI Oct 09, 2026Oct 23, 2026

All saved dates are shown. Changes compare consecutive saved observations. Missing observations are not filled with zero.

CME contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing380
Oct 21, 202638+10
Oct 16, 2026280
Oct 15, 2026280
Oct 14, 202628+10
Oct 13, 2026180
Oct 09, 202618No prior observation