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Contract OI history

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Jun 16, 2028 EXPIRATION

CAT $600.00 Put

CAT280616P00600000

Latest saved OI538Oct 23, 2026
Last change-1vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
CAT $600.00 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. 5392690 2026-10-02: 342 OI2026-10-05: 342 OI2026-10-06: 342 OI2026-10-07: 342 OI2026-10-08: 342 OI2026-10-09: 343 OI2026-10-13: 539 OI2026-10-14: 539 OI2026-10-15: 539 OI2026-10-16: 539 OI2026-10-21: 539 OI2026-10-23: 538 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, 2026Viewing538-1
Oct 21, 20265390
Oct 16, 20265390
Oct 15, 20265390
Oct 14, 20265390
Oct 13, 2026539+196
Oct 09, 2026343+1
Oct 08, 20263420
Oct 07, 20263420
Oct 06, 20263420
Oct 05, 20263420
Oct 02, 2026342No prior observation