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Contract OI history

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Dec 18, 2026 EXPIRATION

CYPH $2.50 Put

CYPH261218P00002500

Latest saved OI5,615Oct 23, 2026
Last change-63vs previous saved observation
Saved market days6Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
CYPH $2.50 put open interest history 6 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 5,6782,8390 2026-10-09: 4,339 OI2026-10-13: 4,339 OI2026-10-15: 4,713 OI2026-10-16: 5,459 OI2026-10-21: 5,678 OI2026-10-23: 5,615 OI Oct 09, 2026Oct 23, 2026

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

CYPH contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing5,615-63
Oct 21, 20265,678+219
Oct 16, 20265,459+746
Oct 15, 20264,713+374
Oct 13, 20264,3390
Oct 09, 20264,339No prior observation