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Contract OI history

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Nov 20, 2026 EXPIRATION

CYPH $2.50 Put

CYPH261120P00002500

Latest saved OI3,639Oct 23, 2026
Last change+93vs 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. 3,6391,8190 2026-10-09: 3,534 OI2026-10-13: 2,905 OI2026-10-15: 2,887 OI2026-10-16: 3,219 OI2026-10-21: 3,546 OI2026-10-23: 3,639 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, 2026Viewing3,639+93
Oct 21, 20263,546+327
Oct 16, 20263,219+332
Oct 15, 20262,887-18
Oct 13, 20262,905-629
Oct 09, 20263,534No prior observation