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Contract OI history

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Oct 30, 2026 EXPIRATION

CAT $640.00 Put

CAT261030P00640000

Latest saved OI217Oct 23, 2026
Last change+5vs 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. 2171080 2026-10-02: 100 OI2026-10-05: 100 OI2026-10-06: 102 OI2026-10-07: 102 OI2026-10-08: 102 OI2026-10-09: 104 OI2026-10-13: 120 OI2026-10-14: 120 OI2026-10-15: 119 OI2026-10-16: 120 OI2026-10-21: 212 OI2026-10-23: 217 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, 2026Viewing217+5
Oct 21, 2026212+92
Oct 16, 2026120+1
Oct 15, 2026119-1
Oct 14, 20261200
Oct 13, 2026120+16
Oct 09, 2026104+2
Oct 08, 20261020
Oct 07, 20261020
Oct 06, 2026102+2
Oct 05, 20261000
Oct 02, 2026100No prior observation