OITracker Cboe delayed data

Contract OI history

Back to BZAI

May 21, 2027 EXPIRATION

BZAI $500.00 Call

BZAI270521C00000500

Latest saved OI294Oct 23, 2026
Last change+44vs previous saved observation
Saved market days6Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
BZAI $500.00 call open interest history 6 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 2941470 2026-10-09: 46 OI2026-10-13: 117 OI2026-10-15: 119 OI2026-10-16: 209 OI2026-10-20: 250 OI2026-10-23: 294 OI Oct 09, 2026Oct 23, 2026

All saved dates are shown. Changes compare consecutive saved observations. Missing observations are not filled with zero.

BZAI contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing294+44
Oct 20, 2026250+41
Oct 16, 2026209+90
Oct 15, 2026119+2
Oct 13, 2026117+71
Oct 09, 202646No prior observation