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Contract OI history

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Sep 17, 2027 EXPIRATION

CAT $660.00 Put

CAT270917P00660000

Latest saved OI109Oct 23, 2026
Last change+8vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
CAT $660.00 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. 109540 2026-10-02: 93 OI2026-10-05: 93 OI2026-10-06: 93 OI2026-10-07: 94 OI2026-10-08: 94 OI2026-10-09: 94 OI2026-10-13: 94 OI2026-10-14: 94 OI2026-10-15: 96 OI2026-10-16: 96 OI2026-10-21: 101 OI2026-10-23: 109 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, 2026Viewing109+8
Oct 21, 2026101+5
Oct 16, 2026960
Oct 15, 202696+2
Oct 14, 2026940
Oct 13, 2026940
Oct 09, 2026940
Oct 08, 2026940
Oct 07, 202694+1
Oct 06, 2026930
Oct 05, 2026930
Oct 02, 202693No prior observation