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Contract OI history

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Jan 15, 2027 EXPIRATION

CPSH $2.50 Put

CPSH270115P00002500

Latest saved OI299Oct 23, 2026
Last change-11vs previous saved observation
Saved market days7Oct 08, 2026 onwards
Daily open interest Hover a point for its date and OI
CPSH $2.50 put open interest history 7 saved observations from 2026-10-08 to 2026-10-23. Exact values and changes are listed in the table below. 3291640 2026-10-08: 329 OI2026-10-09: 319 OI2026-10-13: 319 OI2026-10-14: 319 OI2026-10-16: 319 OI2026-10-20: 310 OI2026-10-23: 299 OI Oct 08, 2026Oct 23, 2026

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

CPSH contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing299-11
Oct 20, 2026310-9
Oct 16, 20263190
Oct 14, 20263190
Oct 13, 20263190
Oct 09, 2026319-10
Oct 08, 2026329No prior observation