OITracker Cboe delayed data

Contract OI history

Back to B

Oct 30, 2026 EXPIRATION

B $39.00 Put

B261030P00039000

Latest saved OI456Oct 23, 2026
Last change+63vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
B $39.00 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. 4562280 2026-10-02: 304 OI2026-10-05: 309 OI2026-10-06: 309 OI2026-10-07: 309 OI2026-10-08: 309 OI2026-10-09: 309 OI2026-10-13: 310 OI2026-10-14: 312 OI2026-10-15: 321 OI2026-10-16: 321 OI2026-10-21: 393 OI2026-10-23: 456 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, 2026Viewing456+63
Oct 21, 2026393+72
Oct 16, 20263210
Oct 15, 2026321+9
Oct 14, 2026312+2
Oct 13, 2026310+1
Oct 09, 20263090
Oct 08, 20263090
Oct 07, 20263090
Oct 06, 20263090
Oct 05, 2026309+5
Oct 02, 2026304No prior observation