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Contract OI history

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Dec 17, 2027 EXPIRATION

CAT $800.00 Put

CAT271217P00800000

Latest saved OI139Oct 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 $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. 140700 2026-10-02: 128 OI2026-10-05: 129 OI2026-10-06: 129 OI2026-10-07: 137 OI2026-10-08: 137 OI2026-10-09: 137 OI2026-10-13: 138 OI2026-10-14: 138 OI2026-10-15: 140 OI2026-10-16: 140 OI2026-10-21: 140 OI2026-10-23: 139 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, 2026Viewing139-1
Oct 21, 20261400
Oct 16, 20261400
Oct 15, 2026140+2
Oct 14, 20261380
Oct 13, 2026138+1
Oct 09, 20261370
Oct 08, 20261370
Oct 07, 2026137+8
Oct 06, 20261290
Oct 05, 2026129+1
Oct 02, 2026128No prior observation