OITracker Cboe delayed data

Contract OI history

Back to B

Dec 18, 2026 EXPIRATION

B $39.00 Put

B261218P00039000

Latest saved OI1,580Oct 23, 2026
Last change+180vs 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. 1,5807900 2026-10-02: 849 OI2026-10-05: 865 OI2026-10-06: 865 OI2026-10-07: 866 OI2026-10-08: 868 OI2026-10-09: 1,350 OI2026-10-13: 1,376 OI2026-10-14: 1,376 OI2026-10-15: 1,409 OI2026-10-16: 1,394 OI2026-10-21: 1,400 OI2026-10-23: 1,580 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, 2026Viewing1,580+180
Oct 21, 20261,400+6
Oct 16, 20261,394-15
Oct 15, 20261,409+33
Oct 14, 20261,3760
Oct 13, 20261,376+26
Oct 09, 20261,350+482
Oct 08, 2026868+2
Oct 07, 2026866+1
Oct 06, 20268650
Oct 05, 2026865+16
Oct 02, 2026849No prior observation