OITracker Cboe delayed data

Contract OI history

Back to B

Jan 21, 2028 EXPIRATION

B $15.00 Put

B280121P00015000

Latest saved OI586Oct 23, 2026
Last change+9vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
B $15.00 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. 5862930 2026-10-02: 535 OI2026-10-05: 535 OI2026-10-06: 535 OI2026-10-07: 535 OI2026-10-08: 547 OI2026-10-09: 563 OI2026-10-13: 562 OI2026-10-14: 562 OI2026-10-15: 577 OI2026-10-16: 577 OI2026-10-21: 577 OI2026-10-23: 586 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, 2026Viewing586+9
Oct 21, 20265770
Oct 16, 20265770
Oct 15, 2026577+15
Oct 14, 20265620
Oct 13, 2026562-1
Oct 09, 2026563+16
Oct 08, 2026547+12
Oct 07, 20265350
Oct 06, 20265350
Oct 05, 20265350
Oct 02, 2026535No prior observation