OITracker Cboe delayed data

Contract OI history

Back to B

Dec 15, 2028 EXPIRATION

B $50.00 Put

B281215P00050000

Latest saved OI57Oct 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 $50.00 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. 57280 2026-10-02: 57 OI2026-10-05: 57 OI2026-10-06: 57 OI2026-10-07: 57 OI2026-10-08: 57 OI2026-10-09: 57 OI2026-10-13: 57 OI2026-10-14: 57 OI2026-10-15: 57 OI2026-10-16: 57 OI2026-10-21: 57 OI2026-10-23: 57 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, 2026Viewing570
Oct 21, 2026570
Oct 16, 2026570
Oct 15, 2026570
Oct 14, 2026570
Oct 13, 2026570
Oct 09, 2026570
Oct 08, 2026570
Oct 07, 2026570
Oct 06, 2026570
Oct 05, 2026570
Oct 02, 202657No prior observation