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Contract OI history

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Jan 15, 2027 EXPIRATION

CAT $500.00 Put

CAT270115P00500000

Latest saved OI748Oct 23, 2026
Last change+24vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
CAT $500.00 put open interest history 12 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 7483740 2026-10-02: 641 OI2026-10-05: 635 OI2026-10-06: 635 OI2026-10-07: 635 OI2026-10-08: 635 OI2026-10-09: 635 OI2026-10-13: 636 OI2026-10-14: 636 OI2026-10-15: 636 OI2026-10-16: 638 OI2026-10-21: 724 OI2026-10-23: 748 OI Oct 02, 2026Oct 23, 2026

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

CAT contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing748+24
Oct 21, 2026724+86
Oct 16, 2026638+2
Oct 15, 20266360
Oct 14, 20266360
Oct 13, 2026636+1
Oct 09, 20266350
Oct 08, 20266350
Oct 07, 20266350
Oct 06, 20266350
Oct 05, 2026635-6
Oct 02, 2026641No prior observation