OITracker Cboe delayed data

Contract OI history

Back to B

Jun 17, 2027 EXPIRATION

B $43.00 Call

B270617C00043000

Latest saved OI21Oct 23, 2026
Last change0vs previous saved observation
Saved market days4Oct 15, 2026 onwards
Daily open interest Hover a point for its date and OI
B $43.00 call open interest history 4 saved observations from 2026-10-15 to 2026-10-23. Exact values and changes are listed in the table below. 21100 2026-10-15: 0 OI2026-10-16: 21 OI2026-10-21: 21 OI2026-10-23: 21 OI Oct 15, 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, 2026Viewing210
Oct 21, 2026210
Oct 16, 202621+21
Oct 15, 20260No prior observation