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Contract OI history

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Jun 17, 2027 EXPIRATION

CAT $640.00 Put

CAT270617P00640000

Latest saved OI452Oct 23, 2026
Last change+75vs 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. 4522260 2026-10-02: 313 OI2026-10-05: 313 OI2026-10-06: 316 OI2026-10-07: 317 OI2026-10-08: 317 OI2026-10-09: 319 OI2026-10-13: 371 OI2026-10-14: 371 OI2026-10-15: 370 OI2026-10-16: 370 OI2026-10-21: 377 OI2026-10-23: 452 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, 2026Viewing452+75
Oct 21, 2026377+7
Oct 16, 20263700
Oct 15, 2026370-1
Oct 14, 20263710
Oct 13, 2026371+52
Oct 09, 2026319+2
Oct 08, 20263170
Oct 07, 2026317+1
Oct 06, 2026316+3
Oct 05, 20263130
Oct 02, 2026313No prior observation