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Contract OI history

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Dec 17, 2027 EXPIRATION

IONS $55.00 Call

IONS271217C00055000

Latest saved OI2,069Oct 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 $55.00 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. 2,0691,0340 2026-10-09: 65 OI2026-10-13: 65 OI2026-10-14: 2,064 OI2026-10-16: 2,069 OI2026-10-19: 2,069 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, 2026Viewing2,0690
Oct 16, 20262,069+5
Oct 14, 20262,064+1,999
Oct 13, 2026650
Oct 09, 202665No prior observation