OITracker Cboe delayed data

Contract OI history

Back to FOUR

Dec 18, 2026 EXPIRATION

FOUR $40.00 Call

FOUR261218C00040000

Latest saved OI300Oct 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
FOUR $40.00 call open interest history 12 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 3041520 2026-10-02: 257 OI2026-10-05: 257 OI2026-10-06: 286 OI2026-10-07: 286 OI2026-10-08: 286 OI2026-10-09: 288 OI2026-10-13: 296 OI2026-10-14: 296 OI2026-10-15: 296 OI2026-10-16: 304 OI2026-10-21: 301 OI2026-10-23: 300 OI Oct 02, 2026Oct 23, 2026

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

FOUR contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing300-1
Oct 21, 2026301-3
Oct 16, 2026304+8
Oct 15, 20262960
Oct 14, 20262960
Oct 13, 2026296+8
Oct 09, 2026288+2
Oct 08, 20262860
Oct 07, 20262860
Oct 06, 2026286+29
Oct 05, 20262570
Oct 02, 2026257No prior observation