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Contract OI history

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Jan 21, 2028 EXPIRATION

CAT $800.00 Put

CAT280121P00800000

Latest saved OI422Oct 23, 2026
Last change0vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
CAT $800.00 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. 4292140 2026-10-02: 429 OI2026-10-05: 428 OI2026-10-06: 428 OI2026-10-07: 427 OI2026-10-08: 427 OI2026-10-09: 427 OI2026-10-13: 427 OI2026-10-14: 427 OI2026-10-15: 427 OI2026-10-16: 426 OI2026-10-21: 422 OI2026-10-23: 422 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, 2026Viewing4220
Oct 21, 2026422-4
Oct 16, 2026426-1
Oct 15, 20264270
Oct 14, 20264270
Oct 13, 20264270
Oct 09, 20264270
Oct 08, 20264270
Oct 07, 2026427-1
Oct 06, 20264280
Oct 05, 2026428-1
Oct 02, 2026429No prior observation