OITracker Cboe delayed data

Contract OI history

Back to B

Sep 17, 2027 EXPIRATION

B $55.00 Call

B270917C00055000

Latest saved OI254Oct 23, 2026
Last change+10vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
B $55.00 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. 3081540 2026-10-02: 111 OI2026-10-05: 214 OI2026-10-06: 214 OI2026-10-07: 214 OI2026-10-08: 254 OI2026-10-09: 252 OI2026-10-13: 252 OI2026-10-14: 308 OI2026-10-15: 248 OI2026-10-16: 247 OI2026-10-21: 244 OI2026-10-23: 254 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, 2026Viewing254+10
Oct 21, 2026244-3
Oct 16, 2026247-1
Oct 15, 2026248-60
Oct 14, 2026308+56
Oct 13, 20262520
Oct 09, 2026252-2
Oct 08, 2026254+40
Oct 07, 20262140
Oct 06, 20262140
Oct 05, 2026214+103
Oct 02, 2026111No prior observation