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Contract OI history

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Dec 18, 2026 EXPIRATION

NTSK $17.50 Call

NTSK261218C00017500

Latest saved OI1,032Oct 23, 2026
Last change-15vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
NTSK $17.50 call open interest history 7 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 1,1215600 2026-10-09: 1,121 OI2026-10-13: 1,107 OI2026-10-14: 1,106 OI2026-10-15: 1,110 OI2026-10-16: 1,111 OI2026-10-21: 1,047 OI2026-10-23: 1,032 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, 2026Viewing1,032-15
Oct 21, 20261,047-64
Oct 16, 20261,111+1
Oct 15, 20261,110+4
Oct 14, 20261,106-1
Oct 13, 20261,107-14
Oct 09, 20261,121No prior observation