OITracker Cboe delayed data

Contract OI history

Back to EFX

Jan 15, 2027 EXPIRATION

EFX $160.00 Put

EFX270115P00160000

Latest saved OI181Oct 23, 2026
Last change+1vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
EFX $160.00 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. 181900 2026-10-02: 179 OI2026-10-05: 179 OI2026-10-06: 179 OI2026-10-07: 179 OI2026-10-08: 179 OI2026-10-09: 179 OI2026-10-13: 179 OI2026-10-14: 179 OI2026-10-15: 179 OI2026-10-16: 180 OI2026-10-21: 180 OI2026-10-23: 181 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, 2026Viewing181+1
Oct 21, 20261800
Oct 16, 2026180+1
Oct 15, 20261790
Oct 14, 20261790
Oct 13, 20261790
Oct 09, 20261790
Oct 08, 20261790
Oct 07, 20261790
Oct 06, 20261790
Oct 05, 20261790
Oct 02, 2026179No prior observation