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Contract OI history

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Jan 15, 2027 EXPIRATION

IONS $50.00 Call

IONS270115C00050000

Latest saved OI1,065Oct 19, 2026
Last change+286vs previous saved observation
Saved market days5Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
IONS $50.00 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. 1,0655320 2026-10-09: 779 OI2026-10-13: 779 OI2026-10-14: 779 OI2026-10-16: 779 OI2026-10-19: 1,065 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, 2026Viewing1,065+286
Oct 16, 20267790
Oct 14, 20267790
Oct 13, 20267790
Oct 09, 2026779No prior observation