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Contract OI history

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Jan 15, 2027 EXPIRATION

CAT $640.00 Put

CAT270115P00640000

Latest saved OI611Oct 23, 2026
Last change+6vs 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. 6113050 2026-10-02: 538 OI2026-10-05: 537 OI2026-10-06: 534 OI2026-10-07: 539 OI2026-10-08: 539 OI2026-10-09: 550 OI2026-10-13: 557 OI2026-10-14: 557 OI2026-10-15: 542 OI2026-10-16: 562 OI2026-10-21: 605 OI2026-10-23: 611 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, 2026Viewing611+6
Oct 21, 2026605+43
Oct 16, 2026562+20
Oct 15, 2026542-15
Oct 14, 20265570
Oct 13, 2026557+7
Oct 09, 2026550+11
Oct 08, 20265390
Oct 07, 2026539+5
Oct 06, 2026534-3
Oct 05, 2026537-1
Oct 02, 2026538No prior observation