OITracker Cboe delayed data

Contract OI history

Back to ECO

Nov 20, 2026 EXPIRATION

ECO $75.00 Put

ECO261120P00075000

Latest saved OI396Oct 23, 2026
Last change-1vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
ECO $75.00 put open interest history 11 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 3971980 2026-10-02: 365 OI2026-10-05: 365 OI2026-10-06: 361 OI2026-10-07: 364 OI2026-10-08: 364 OI2026-10-09: 364 OI2026-10-13: 363 OI2026-10-14: 362 OI2026-10-16: 366 OI2026-10-21: 397 OI2026-10-23: 396 OI Oct 02, 2026Oct 23, 2026

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

ECO contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing396-1
Oct 21, 2026397+31
Oct 16, 2026366+4
Oct 14, 2026362-1
Oct 13, 2026363-1
Oct 09, 20263640
Oct 08, 20263640
Oct 07, 2026364+3
Oct 06, 2026361-4
Oct 05, 20263650
Oct 02, 2026365No prior observation