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Contract OI history

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Dec 18, 2026 EXPIRATION

NTSK $19.00 Put

NTSK261218P00019000

Latest saved OI289Oct 23, 2026
Last change+2vs previous saved observation
Saved market days3Oct 16, 2026 onwards
Daily open interest Hover a point for its date and OI
NTSK $19.00 put open interest history 3 saved observations from 2026-10-16 to 2026-10-23. Exact values and changes are listed in the table below. 2891440 2026-10-16: 0 OI2026-10-21: 287 OI2026-10-23: 289 OI Oct 16, 2026Oct 23, 2026

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

NTSK contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing289+2
Oct 21, 2026287+287
Oct 16, 20260No prior observation