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Contract OI history

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Dec 18, 2026 EXPIRATION

CLSK $18.00 Put

CLSK261218P00018000

Latest saved OI164Oct 23, 2026
Last change-46vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
CLSK $18.00 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. 2211100 2026-10-09: 221 OI2026-10-13: 220 OI2026-10-14: 220 OI2026-10-15: 220 OI2026-10-16: 212 OI2026-10-21: 210 OI2026-10-23: 164 OI Oct 09, 2026Oct 23, 2026

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

CLSK contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing164-46
Oct 21, 2026210-2
Oct 16, 2026212-8
Oct 15, 20262200
Oct 14, 20262200
Oct 13, 2026220-1
Oct 09, 2026221No prior observation