OITracker Cboe delayed data

Contract OI history

Back to B

Dec 15, 2028 EXPIRATION

B $42.00 Put

B281215P00042000

Latest saved OI333Oct 23, 2026
Last change0vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
B $42.00 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. 3331660 2026-10-02: 322 OI2026-10-05: 322 OI2026-10-06: 322 OI2026-10-07: 333 OI2026-10-08: 333 OI2026-10-09: 333 OI2026-10-13: 331 OI2026-10-14: 331 OI2026-10-15: 333 OI2026-10-16: 333 OI2026-10-21: 333 OI2026-10-23: 333 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, 2026Viewing3330
Oct 21, 20263330
Oct 16, 20263330
Oct 15, 2026333+2
Oct 14, 20263310
Oct 13, 2026331-2
Oct 09, 20263330
Oct 08, 20263330
Oct 07, 2026333+11
Oct 06, 20263220
Oct 05, 20263220
Oct 02, 2026322No prior observation