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Contract OI history

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Nov 06, 2026 EXPIRATION

CAT $640.00 Put

CAT261106P00640000

Latest saved OI375Oct 23, 2026
Last change+7vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
CAT $640.00 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. 3751870 2026-10-02: 361 OI2026-10-05: 361 OI2026-10-06: 365 OI2026-10-07: 365 OI2026-10-08: 365 OI2026-10-09: 365 OI2026-10-13: 365 OI2026-10-14: 365 OI2026-10-15: 365 OI2026-10-16: 369 OI2026-10-21: 368 OI2026-10-23: 375 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, 2026Viewing375+7
Oct 21, 2026368-1
Oct 16, 2026369+4
Oct 15, 20263650
Oct 14, 20263650
Oct 13, 20263650
Oct 09, 20263650
Oct 08, 20263650
Oct 07, 20263650
Oct 06, 2026365+4
Oct 05, 20263610
Oct 02, 2026361No prior observation