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Contract OI history

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Apr 16, 2027 EXPIRATION

CSTL $25.00 Put

CSTL270416P00025000

Latest saved OI9Oct 23, 2026
Last change0vs previous saved observation
Saved market days6Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
CSTL $25.00 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. 940 2026-10-09: 8 OI2026-10-13: 8 OI2026-10-14: 8 OI2026-10-16: 8 OI2026-10-20: 9 OI2026-10-23: 9 OI Oct 09, 2026Oct 23, 2026

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

CSTL contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing90
Oct 20, 20269+1
Oct 16, 202680
Oct 14, 202680
Oct 13, 202680
Oct 09, 20268No prior observation