OITracker Cboe delayed data

Contract OI history

Back to GIS

Dec 18, 2026 EXPIRATION

GIS $40.00 Call

GIS261218C00040000

Latest saved OI5,448Oct 23, 2026
Last change+341vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
GIS $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. 5,4482,7240 2026-10-02: 3,500 OI2026-10-05: 3,488 OI2026-10-06: 3,462 OI2026-10-07: 3,463 OI2026-10-08: 5,325 OI2026-10-09: 5,324 OI2026-10-13: 5,219 OI2026-10-14: 5,180 OI2026-10-15: 5,183 OI2026-10-16: 5,206 OI2026-10-21: 5,107 OI2026-10-23: 5,448 OI Oct 02, 2026Oct 23, 2026

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

GIS contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing5,448+341
Oct 21, 20265,107-99
Oct 16, 20265,206+23
Oct 15, 20265,183+3
Oct 14, 20265,180-39
Oct 13, 20265,219-105
Oct 09, 20265,324-1
Oct 08, 20265,325+1,862
Oct 07, 20263,463+1
Oct 06, 20263,462-26
Oct 05, 20263,488-12
Oct 02, 20263,500No prior observation