OITracker Cboe delayed data

Contract OI history

Back to O

Jun 17, 2027 EXPIRATION

O $37.50 Put

O270617P00037500

Latest saved OI160Oct 23, 2026
Last change0vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
O $37.50 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. 160800 2026-10-02: 159 OI2026-10-05: 159 OI2026-10-06: 159 OI2026-10-07: 159 OI2026-10-08: 159 OI2026-10-09: 159 OI2026-10-13: 160 OI2026-10-14: 160 OI2026-10-15: 160 OI2026-10-16: 160 OI2026-10-21: 160 OI2026-10-23: 160 OI Oct 02, 2026Oct 23, 2026

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

O contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing1600
Oct 21, 20261600
Oct 16, 20261600
Oct 15, 20261600
Oct 14, 20261600
Oct 13, 2026160+1
Oct 09, 20261590
Oct 08, 20261590
Oct 07, 20261590
Oct 06, 20261590
Oct 05, 20261590
Oct 02, 2026159No prior observation