OITracker Cboe delayed data

Contract OI history

Back to B

Jan 15, 2027 EXPIRATION

B $30.00 Put

B270115P00030000

Latest saved OI9,850Oct 23, 2026
Last change-1vs 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. 9,9514,9750 2026-10-02: 9,900 OI2026-10-05: 9,900 OI2026-10-06: 9,900 OI2026-10-07: 9,900 OI2026-10-08: 9,901 OI2026-10-09: 9,901 OI2026-10-13: 9,901 OI2026-10-14: 9,865 OI2026-10-15: 9,951 OI2026-10-16: 9,874 OI2026-10-21: 9,851 OI2026-10-23: 9,850 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, 2026Viewing9,850-1
Oct 21, 20269,851-23
Oct 16, 20269,874-77
Oct 15, 20269,951+86
Oct 14, 20269,865-36
Oct 13, 20269,9010
Oct 09, 20269,9010
Oct 08, 20269,901+1
Oct 07, 20269,9000
Oct 06, 20269,9000
Oct 05, 20269,9000
Oct 02, 20269,900No prior observation