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Contract OI history

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Dec 18, 2026 EXPIRATION

CAT $510.00 Put

CAT261218P00510000

Latest saved OI417Oct 23, 2026
Last change+8vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
CAT $510.00 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. 4172080 2026-10-02: 413 OI2026-10-05: 413 OI2026-10-06: 413 OI2026-10-07: 411 OI2026-10-08: 411 OI2026-10-09: 411 OI2026-10-13: 409 OI2026-10-14: 409 OI2026-10-15: 409 OI2026-10-16: 408 OI2026-10-21: 409 OI2026-10-23: 417 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, 2026Viewing417+8
Oct 21, 2026409+1
Oct 16, 2026408-1
Oct 15, 20264090
Oct 14, 20264090
Oct 13, 2026409-2
Oct 09, 20264110
Oct 08, 20264110
Oct 07, 2026411-2
Oct 06, 20264130
Oct 05, 20264130
Oct 02, 2026413No prior observation