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Contract OI history

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Jun 17, 2027 EXPIRATION

CAT $520.00 Put

CAT270617P00520000

Latest saved OI207Oct 23, 2026
Last change+1vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
CAT $520.00 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. 2071030 2026-10-02: 191 OI2026-10-05: 191 OI2026-10-06: 191 OI2026-10-07: 191 OI2026-10-08: 191 OI2026-10-09: 191 OI2026-10-13: 191 OI2026-10-14: 191 OI2026-10-15: 206 OI2026-10-16: 206 OI2026-10-21: 206 OI2026-10-23: 207 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, 2026Viewing207+1
Oct 21, 20262060
Oct 16, 20262060
Oct 15, 2026206+15
Oct 14, 20261910
Oct 13, 20261910
Oct 09, 20261910
Oct 08, 20261910
Oct 07, 20261910
Oct 06, 20261910
Oct 05, 20261910
Oct 02, 2026191No prior observation