OITracker Cboe delayed data

Contract OI history

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Jan 15, 2027 EXPIRATION

B $55.00 Call

B270115C00055000

Latest saved OI12,763Oct 23, 2026
Last change+334vs 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. 12,7636,3810 2026-10-02: 12,399 OI2026-10-05: 12,362 OI2026-10-06: 12,362 OI2026-10-07: 12,366 OI2026-10-08: 12,360 OI2026-10-09: 12,260 OI2026-10-13: 12,400 OI2026-10-14: 12,338 OI2026-10-15: 12,417 OI2026-10-16: 12,412 OI2026-10-21: 12,429 OI2026-10-23: 12,763 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, 2026Viewing12,763+334
Oct 21, 202612,429+17
Oct 16, 202612,412-5
Oct 15, 202612,417+79
Oct 14, 202612,338-62
Oct 13, 202612,400+140
Oct 09, 202612,260-100
Oct 08, 202612,360-6
Oct 07, 202612,366+4
Oct 06, 202612,3620
Oct 05, 202612,362-37
Oct 02, 202612,399No prior observation