OITracker Cboe delayed data

Contract OI history

Back to B

Oct 30, 2026 EXPIRATION

B $37.00 Put

B261030P00037000

Latest saved OI1,708Oct 23, 2026
Last change+55vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
B $37.00 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. 1,7088540 2026-10-02: 231 OI2026-10-05: 531 OI2026-10-06: 531 OI2026-10-07: 531 OI2026-10-08: 549 OI2026-10-09: 550 OI2026-10-13: 544 OI2026-10-14: 544 OI2026-10-15: 550 OI2026-10-16: 547 OI2026-10-21: 1,653 OI2026-10-23: 1,708 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, 2026Viewing1,708+55
Oct 21, 20261,653+1,106
Oct 16, 2026547-3
Oct 15, 2026550+6
Oct 14, 20265440
Oct 13, 2026544-6
Oct 09, 2026550+1
Oct 08, 2026549+18
Oct 07, 20265310
Oct 06, 20265310
Oct 05, 2026531+300
Oct 02, 2026231No prior observation