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Contract OI history

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Oct 23, 2026 EXPIRATION

CYPH $2.50 Put

CYPH261023P00002500

Latest saved OI65Oct 23, 2026
Last change-1vs 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. 66330 2026-10-09: 11 OI2026-10-13: 17 OI2026-10-15: 52 OI2026-10-16: 52 OI2026-10-21: 66 OI2026-10-23: 65 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, 2026Viewing65-1
Oct 21, 202666+14
Oct 16, 2026520
Oct 15, 202652+35
Oct 13, 202617+6
Oct 09, 202611No prior observation