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Contract OI history

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Nov 20, 2026 EXPIRATION

SNDK $400.00 Put

SNDK261120P00400000

Latest saved OI201Oct 23, 2026
Last change+2vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
SNDK $400.00 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. 2011000 2026-10-09: 179 OI2026-10-13: 179 OI2026-10-14: 179 OI2026-10-15: 179 OI2026-10-16: 183 OI2026-10-21: 199 OI2026-10-23: 201 OI Oct 09, 2026Oct 23, 2026

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

SNDK contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing201+2
Oct 21, 2026199+16
Oct 16, 2026183+4
Oct 15, 20261790
Oct 14, 20261790
Oct 13, 20261790
Oct 09, 2026179No prior observation