OITracker Cboe delayed data

Contract OI history

Back to EFX

Apr 16, 2027 EXPIRATION

EFX $140.00 Put

EFX270416P00140000

Latest saved OI324Oct 23, 2026
Last change-5vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
EFX $140.00 put open interest history 12 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 3301650 2026-10-02: 327 OI2026-10-05: 328 OI2026-10-06: 328 OI2026-10-07: 328 OI2026-10-08: 328 OI2026-10-09: 328 OI2026-10-13: 328 OI2026-10-14: 330 OI2026-10-15: 330 OI2026-10-16: 330 OI2026-10-21: 329 OI2026-10-23: 324 OI Oct 02, 2026Oct 23, 2026

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

EFX contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing324-5
Oct 21, 2026329-1
Oct 16, 20263300
Oct 15, 20263300
Oct 14, 2026330+2
Oct 13, 20263280
Oct 09, 20263280
Oct 08, 20263280
Oct 07, 20263280
Oct 06, 20263280
Oct 05, 2026328+1
Oct 02, 2026327No prior observation