OITracker Cboe delayed data

Contract OI history

Back to GIS

Mar 19, 2027 EXPIRATION

GIS $27.50 Put

GIS270319P00027500

Latest saved OI1,171Oct 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. 1,1715850 2026-10-02: 1,123 OI2026-10-05: 1,122 OI2026-10-06: 1,124 OI2026-10-07: 1,126 OI2026-10-08: 1,127 OI2026-10-09: 1,125 OI2026-10-13: 1,136 OI2026-10-14: 1,146 OI2026-10-15: 1,146 OI2026-10-16: 1,155 OI2026-10-21: 1,171 OI2026-10-23: 1,171 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, 2026Viewing1,1710
Oct 21, 20261,171+16
Oct 16, 20261,155+9
Oct 15, 20261,1460
Oct 14, 20261,146+10
Oct 13, 20261,136+11
Oct 09, 20261,125-2
Oct 08, 20261,127+1
Oct 07, 20261,126+2
Oct 06, 20261,124+2
Oct 05, 20261,122-1
Oct 02, 20261,123No prior observation