OITracker Cboe delayed data

Contract OI history

Back to IONS

Jan 21, 2028 EXPIRATION

IONS $40.00 Call

IONS280121C00040000

Latest saved OI69Oct 19, 2026
Last change0vs previous saved observation
Saved market days5Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
IONS $40.00 call open interest history 5 saved observations from 2026-10-09 to 2026-10-19. Exact values and changes are listed in the table below. 71350 2026-10-09: 71 OI2026-10-13: 70 OI2026-10-14: 70 OI2026-10-16: 69 OI2026-10-19: 69 OI Oct 09, 2026Oct 19, 2026

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

IONS contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 19, 2026Viewing690
Oct 16, 202669-1
Oct 14, 2026700
Oct 13, 202670-1
Oct 09, 202671No prior observation