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Contract OI history

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Jan 21, 2028 EXPIRATION

CRSP $40.00 Put

CRSP280121P00040000

Latest saved OI708Oct 23, 2026
Last change0vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
CRSP $40.00 put open interest history 7 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 7083540 2026-10-09: 689 OI2026-10-13: 699 OI2026-10-14: 699 OI2026-10-15: 699 OI2026-10-16: 699 OI2026-10-21: 708 OI2026-10-23: 708 OI Oct 09, 2026Oct 23, 2026

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

CRSP contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing7080
Oct 21, 2026708+9
Oct 16, 20266990
Oct 15, 20266990
Oct 14, 20266990
Oct 13, 2026699+10
Oct 09, 2026689No prior observation