OITracker Cboe delayed data

Contract OI history

Back to B

Jan 15, 2027 EXPIRATION

B $35.00 Put

B270115P00035000

Latest saved OI9,696Oct 23, 2026
Last change-129vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
B $35.00 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. 9,8684,9340 2026-10-02: 9,778 OI2026-10-05: 9,774 OI2026-10-06: 9,774 OI2026-10-07: 9,773 OI2026-10-08: 9,774 OI2026-10-09: 9,776 OI2026-10-13: 9,779 OI2026-10-14: 9,790 OI2026-10-15: 9,792 OI2026-10-16: 9,868 OI2026-10-21: 9,825 OI2026-10-23: 9,696 OI Oct 02, 2026Oct 23, 2026

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

B contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing9,696-129
Oct 21, 20269,825-43
Oct 16, 20269,868+76
Oct 15, 20269,792+2
Oct 14, 20269,790+11
Oct 13, 20269,779+3
Oct 09, 20269,776+2
Oct 08, 20269,774+1
Oct 07, 20269,773-1
Oct 06, 20269,7740
Oct 05, 20269,774-4
Oct 02, 20269,778No prior observation