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Contract OI history

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Jan 21, 2028 EXPIRATION

KOS $3.50 Call

KOS280121C00003500

Latest saved OI4,787Oct 23, 2026
Last change+10vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
KOS $3.50 call open interest history 11 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 4,7962,3980 2026-10-02: 4,794 OI2026-10-06: 4,796 OI2026-10-07: 4,796 OI2026-10-08: 4,796 OI2026-10-09: 4,796 OI2026-10-13: 4,768 OI2026-10-14: 4,768 OI2026-10-15: 4,752 OI2026-10-16: 4,772 OI2026-10-20: 4,777 OI2026-10-23: 4,787 OI Oct 02, 2026Oct 23, 2026

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

KOS contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing4,787+10
Oct 20, 20264,777+5
Oct 16, 20264,772+20
Oct 15, 20264,752-16
Oct 14, 20264,7680
Oct 13, 20264,768-28
Oct 09, 20264,7960
Oct 08, 20264,7960
Oct 07, 20264,7960
Oct 06, 20264,796+2
Oct 02, 20264,794No prior observation