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Contract OI history

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Dec 18, 2026 EXPIRATION

CAT $800.00 Put

CAT261218P00800000

Latest saved OI534Oct 23, 2026
Last change+2vs 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. 5342670 2026-10-02: 365 OI2026-10-05: 384 OI2026-10-06: 377 OI2026-10-07: 411 OI2026-10-08: 411 OI2026-10-09: 429 OI2026-10-13: 453 OI2026-10-14: 453 OI2026-10-15: 523 OI2026-10-16: 519 OI2026-10-21: 532 OI2026-10-23: 534 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, 2026Viewing534+2
Oct 21, 2026532+13
Oct 16, 2026519-4
Oct 15, 2026523+70
Oct 14, 20264530
Oct 13, 2026453+24
Oct 09, 2026429+18
Oct 08, 20264110
Oct 07, 2026411+34
Oct 06, 2026377-7
Oct 05, 2026384+19
Oct 02, 2026365No prior observation