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Contract OI history

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Dec 18, 2026 EXPIRATION

NTSK $12.50 Put

NTSK261218P00012500

Latest saved OI689Oct 23, 2026
Last change-10vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
NTSK $12.50 put open interest history 7 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 6993490 2026-10-09: 607 OI2026-10-13: 608 OI2026-10-14: 609 OI2026-10-15: 609 OI2026-10-16: 609 OI2026-10-21: 699 OI2026-10-23: 689 OI Oct 09, 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, 2026Viewing689-10
Oct 21, 2026699+90
Oct 16, 20266090
Oct 15, 20266090
Oct 14, 2026609+1
Oct 13, 2026608+1
Oct 09, 2026607No prior observation