OITracker Cboe delayed data

Contract OI history

Back to B

Dec 15, 2028 EXPIRATION

B $30.00 Call

B281215C00030000

Latest saved OI179Oct 23, 2026
Last change+1vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
B $30.00 call open interest history 12 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 179890 2026-10-02: 168 OI2026-10-05: 169 OI2026-10-06: 169 OI2026-10-07: 169 OI2026-10-08: 169 OI2026-10-09: 169 OI2026-10-13: 174 OI2026-10-14: 174 OI2026-10-15: 174 OI2026-10-16: 174 OI2026-10-21: 178 OI2026-10-23: 179 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, 2026Viewing179+1
Oct 21, 2026178+4
Oct 16, 20261740
Oct 15, 20261740
Oct 14, 20261740
Oct 13, 2026174+5
Oct 09, 20261690
Oct 08, 20261690
Oct 07, 20261690
Oct 06, 20261690
Oct 05, 2026169+1
Oct 02, 2026168No prior observation