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Contract OI history

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Jan 19, 2029 EXPIRATION

KOS $2.50 Call

KOS290119C00002500

Latest saved OI39Oct 23, 2026
Last change+1vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
KOS $2.50 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. 39190 2026-10-02: 7 OI2026-10-06: 12 OI2026-10-07: 12 OI2026-10-08: 15 OI2026-10-09: 15 OI2026-10-13: 15 OI2026-10-14: 12 OI2026-10-15: 12 OI2026-10-16: 37 OI2026-10-20: 38 OI2026-10-23: 39 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, 2026Viewing39+1
Oct 20, 202638+1
Oct 16, 202637+25
Oct 15, 2026120
Oct 14, 202612-3
Oct 13, 2026150
Oct 09, 2026150
Oct 08, 202615+3
Oct 07, 2026120
Oct 06, 202612+5
Oct 02, 20267No prior observation