OITracker Cboe delayed data

Contract OI history

Back to B

Oct 23, 2026 EXPIRATION

B $41.00 Put

B261023P00041000

Latest saved OI350Oct 23, 2026
Last change-810vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
B $41.00 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. 1,1605800 2026-10-02: 1,030 OI2026-10-05: 1,034 OI2026-10-06: 1,034 OI2026-10-07: 921 OI2026-10-08: 921 OI2026-10-09: 921 OI2026-10-13: 935 OI2026-10-14: 935 OI2026-10-15: 934 OI2026-10-16: 935 OI2026-10-21: 1,160 OI2026-10-23: 350 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, 2026Viewing350-810
Oct 21, 20261,160+225
Oct 16, 2026935+1
Oct 15, 2026934-1
Oct 14, 20269350
Oct 13, 2026935+14
Oct 09, 20269210
Oct 08, 20269210
Oct 07, 2026921-113
Oct 06, 20261,0340
Oct 05, 20261,034+4
Oct 02, 20261,030No prior observation