OITracker Cboe delayed data

Contract OI history

Back to B

Oct 30, 2026 EXPIRATION

B $35.00 Put

B261030P00035000

Latest saved OI76Oct 23, 2026
Last change+51vs 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. 76380 2026-10-02: 1 OI2026-10-05: 1 OI2026-10-06: 1 OI2026-10-07: 1 OI2026-10-08: 1 OI2026-10-09: 1 OI2026-10-13: 2 OI2026-10-14: 4 OI2026-10-15: 21 OI2026-10-16: 25 OI2026-10-21: 25 OI2026-10-23: 76 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, 2026Viewing76+51
Oct 21, 2026250
Oct 16, 202625+4
Oct 15, 202621+17
Oct 14, 20264+2
Oct 13, 20262+1
Oct 09, 202610
Oct 08, 202610
Oct 07, 202610
Oct 06, 202610
Oct 05, 202610
Oct 02, 20261No prior observation