OITracker Cboe delayed data

Contract OI history

Back to OBIO

Nov 20, 2026 EXPIRATION

OBIO $7.50 Call

OBIO261120C00007500

Latest saved OI384Oct 23, 2026
Last change+41vs previous saved observation
Saved market days7Oct 07, 2026 onwards
Daily open interest Hover a point for its date and OI
OBIO $7.50 call open interest history 7 saved observations from 2026-10-07 to 2026-10-23. Exact values and changes are listed in the table below. 5812900 2026-10-07: 581 OI2026-10-09: 506 OI2026-10-13: 431 OI2026-10-14: 431 OI2026-10-16: 410 OI2026-10-20: 343 OI2026-10-23: 384 OI Oct 07, 2026Oct 23, 2026

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

OBIO contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026384+41
Oct 20, 2026Viewing343-67
Oct 16, 2026410-21
Oct 14, 20264310
Oct 13, 2026431-75
Oct 09, 2026506-75
Oct 07, 2026581No prior observation