OITracker Cboe delayed data

Contract OI history

Back to B

Dec 15, 2028 EXPIRATION

B $30.00 Put

B281215P00030000

Latest saved OI1,375Oct 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 $30.00 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. 1,3756870 2026-10-02: 1,275 OI2026-10-05: 1,275 OI2026-10-06: 1,275 OI2026-10-07: 1,275 OI2026-10-08: 1,275 OI2026-10-09: 1,375 OI2026-10-13: 1,375 OI2026-10-14: 1,375 OI2026-10-15: 1,375 OI2026-10-16: 1,375 OI2026-10-21: 1,375 OI2026-10-23: 1,375 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, 2026Viewing1,3750
Oct 21, 20261,3750
Oct 16, 20261,3750
Oct 15, 20261,3750
Oct 14, 20261,3750
Oct 13, 20261,3750
Oct 09, 20261,375+100
Oct 08, 20261,2750
Oct 07, 20261,2750
Oct 06, 20261,2750
Oct 05, 20261,2750
Oct 02, 20261,275No prior observation