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Contract OI history

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Dec 18, 2026 EXPIRATION

KOS $2.50 Put

KOS261218P00002500

Latest saved OI284Oct 23, 2026
Last change+140vs previous saved observation
Saved market days4Oct 15, 2026 onwards
Daily open interest Hover a point for its date and OI
KOS $2.50 put open interest history 4 saved observations from 2026-10-15 to 2026-10-23. Exact values and changes are listed in the table below. 2841420 2026-10-15: 0 OI2026-10-16: 1 OI2026-10-20: 144 OI2026-10-23: 284 OI Oct 15, 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, 2026Viewing284+140
Oct 20, 2026144+143
Oct 16, 20261+1
Oct 15, 20260No prior observation