OITracker Cboe delayed data

Contract OI history

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Jan 15, 2027 EXPIRATION

IONS $35.00 Call

IONS270115C00035000

Latest saved OI180Oct 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 $35.00 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. 180900 2026-10-09: 180 OI2026-10-13: 180 OI2026-10-14: 180 OI2026-10-16: 180 OI2026-10-19: 180 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, 2026Viewing1800
Oct 16, 20261800
Oct 14, 20261800
Oct 13, 20261800
Oct 09, 2026180No prior observation