OITracker Cboe delayed data

Contract OI history

Back to B

Dec 18, 2026 EXPIRATION

B $36.00 Put

B261218P00036000

Latest saved OI1,180Oct 23, 2026
Last change+4vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
B $36.00 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. 1,1805900 2026-10-02: 965 OI2026-10-05: 1,015 OI2026-10-06: 1,015 OI2026-10-07: 1,026 OI2026-10-08: 1,026 OI2026-10-09: 1,056 OI2026-10-13: 1,106 OI2026-10-14: 1,114 OI2026-10-15: 1,129 OI2026-10-16: 1,146 OI2026-10-21: 1,176 OI2026-10-23: 1,180 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, 2026Viewing1,180+4
Oct 21, 20261,176+30
Oct 16, 20261,146+17
Oct 15, 20261,129+15
Oct 14, 20261,114+8
Oct 13, 20261,106+50
Oct 09, 20261,056+30
Oct 08, 20261,0260
Oct 07, 20261,026+11
Oct 06, 20261,0150
Oct 05, 20261,015+50
Oct 02, 2026965No prior observation