OITracker Cboe delayed data

Contract OI history

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Dec 18, 2026 EXPIRATION

GIS $40.00 Put

GIS261218P00040000

Latest saved OI1,122Oct 23, 2026
Last change-66vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
GIS $40.00 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. 1,2666330 2026-10-02: 1,265 OI2026-10-05: 1,266 OI2026-10-06: 1,264 OI2026-10-07: 1,263 OI2026-10-08: 1,261 OI2026-10-09: 1,258 OI2026-10-13: 1,256 OI2026-10-14: 1,231 OI2026-10-15: 1,201 OI2026-10-16: 1,189 OI2026-10-21: 1,188 OI2026-10-23: 1,122 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, 2026Viewing1,122-66
Oct 21, 20261,188-1
Oct 16, 20261,189-12
Oct 15, 20261,201-30
Oct 14, 20261,231-25
Oct 13, 20261,256-2
Oct 09, 20261,258-3
Oct 08, 20261,261-2
Oct 07, 20261,263-1
Oct 06, 20261,264-2
Oct 05, 20261,266+1
Oct 02, 20261,265No prior observation