OITracker Cboe delayed data

Contract OI history

Back to EFC

Dec 18, 2026 EXPIRATION

EFC $12.50 Call

EFC261218C00012500

Latest saved OI3,277Oct 23, 2026
Last change+713vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
EFC $12.50 call open interest history 11 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 3,2771,6380 2026-10-02: 2,263 OI2026-10-05: 2,266 OI2026-10-06: 2,266 OI2026-10-07: 2,267 OI2026-10-08: 2,468 OI2026-10-09: 2,526 OI2026-10-13: 2,527 OI2026-10-14: 2,527 OI2026-10-16: 2,530 OI2026-10-20: 2,564 OI2026-10-23: 3,277 OI Oct 02, 2026Oct 23, 2026

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

EFC contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing3,277+713
Oct 20, 20262,564+34
Oct 16, 20262,530+3
Oct 14, 20262,5270
Oct 13, 20262,527+1
Oct 09, 20262,526+58
Oct 08, 20262,468+201
Oct 07, 20262,267+1
Oct 06, 20262,2660
Oct 05, 20262,266+3
Oct 02, 20262,263No prior observation