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Contract OI history

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Dec 18, 2026 EXPIRATION

SSYS $12.50 Call

SSYS261218C00012500

Latest saved OI575Oct 23, 2026
Last change-37vs previous saved observation
Saved market days7Oct 07, 2026 onwards
Daily open interest Hover a point for its date and OI
SSYS $12.50 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. 6173080 2026-10-07: 617 OI2026-10-09: 617 OI2026-10-13: 617 OI2026-10-14: 617 OI2026-10-16: 612 OI2026-10-20: 612 OI2026-10-23: 575 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, 2026Viewing575-37
Oct 20, 20266120
Oct 16, 2026612-5
Oct 14, 20266170
Oct 13, 20266170
Oct 09, 20266170
Oct 07, 2026617No prior observation