OITracker Cboe delayed data

Contract OI history

Back to IONS

Jan 19, 2029 EXPIRATION

IONS $25.00 Call

IONS290119C00025000

Latest saved OI3Oct 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 $25.00 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. 310 2026-10-09: 2 OI2026-10-13: 2 OI2026-10-14: 2 OI2026-10-16: 3 OI2026-10-19: 3 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, 2026Viewing30
Oct 16, 20263+1
Oct 14, 202620
Oct 13, 202620
Oct 09, 20262No prior observation