OITracker Cboe delayed data

Contract OI history

Back to B

Oct 30, 2026 EXPIRATION

B $38.00 Put

B261030P00038000

Latest saved OI433Oct 23, 2026
Last change+67vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
B $38.00 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. 4332160 2026-10-02: 71 OI2026-10-05: 116 OI2026-10-06: 116 OI2026-10-07: 118 OI2026-10-08: 119 OI2026-10-09: 121 OI2026-10-13: 119 OI2026-10-14: 130 OI2026-10-15: 168 OI2026-10-16: 169 OI2026-10-21: 366 OI2026-10-23: 433 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, 2026Viewing433+67
Oct 21, 2026366+197
Oct 16, 2026169+1
Oct 15, 2026168+38
Oct 14, 2026130+11
Oct 13, 2026119-2
Oct 09, 2026121+2
Oct 08, 2026119+1
Oct 07, 2026118+2
Oct 06, 20261160
Oct 05, 2026116+45
Oct 02, 202671No prior observation