OITracker Cboe delayed data

Contract OI history

Back to GIS

Jan 21, 2028 EXPIRATION

GIS $27.50 Put

GIS280121P00027500

Latest saved OI3,006Oct 23, 2026
Last change0vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
GIS $27.50 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. 3,0061,5030 2026-10-02: 1,033 OI2026-10-05: 1,035 OI2026-10-06: 1,035 OI2026-10-07: 1,035 OI2026-10-08: 1,035 OI2026-10-09: 1,035 OI2026-10-13: 1,069 OI2026-10-14: 1,069 OI2026-10-15: 1,229 OI2026-10-16: 2,019 OI2026-10-21: 3,006 OI2026-10-23: 3,006 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, 2026Viewing3,0060
Oct 21, 20263,006+987
Oct 16, 20262,019+790
Oct 15, 20261,229+160
Oct 14, 20261,0690
Oct 13, 20261,069+34
Oct 09, 20261,0350
Oct 08, 20261,0350
Oct 07, 20261,0350
Oct 06, 20261,0350
Oct 05, 20261,035+2
Oct 02, 20261,033No prior observation