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Contract OI history

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Jan 21, 2028 EXPIRATION

SSYS $17.50 Call

SSYS280121C00017500

Latest saved OI444Oct 23, 2026
Last change0vs previous saved observation
Saved market days7Oct 07, 2026 onwards
Daily open interest Hover a point for its date and OI
SSYS $17.50 call open interest history 7 saved observations from 2026-10-07 to 2026-10-23. Exact values and changes are listed in the table below. 4442220 2026-10-07: 444 OI2026-10-09: 444 OI2026-10-13: 444 OI2026-10-14: 444 OI2026-10-16: 444 OI2026-10-20: 444 OI2026-10-23: 444 OI Oct 07, 2026Oct 23, 2026

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

SSYS contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing4440
Oct 20, 20264440
Oct 16, 20264440
Oct 14, 20264440
Oct 13, 20264440
Oct 09, 20264440
Oct 07, 2026444No prior observation