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Contract OI history

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Jan 15, 2027 EXPIRATION

SION $2.50 Call

SION270115C00002500

Latest saved OI15Oct 23, 2026
Last change+2vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
SION $2.50 call open interest history 7 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 1890 2026-10-09: 18 OI2026-10-13: 16 OI2026-10-14: 13 OI2026-10-15: 13 OI2026-10-16: 13 OI2026-10-20: 13 OI2026-10-23: 15 OI Oct 09, 2026Oct 23, 2026

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

SION contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 202615+2
Oct 20, 2026Viewing130
Oct 16, 2026130
Oct 15, 2026130
Oct 14, 202613-3
Oct 13, 202616-2
Oct 09, 202618No prior observation