OITracker Cboe delayed data

Contract OI history

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Jan 15, 2027 EXPIRATION

CAT $320.00 Put

CAT270115P00320000

Latest saved OI146Oct 23, 2026
Last change0vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
CAT $320.00 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. 146730 2026-10-02: 136 OI2026-10-05: 146 OI2026-10-06: 146 OI2026-10-07: 146 OI2026-10-08: 146 OI2026-10-09: 146 OI2026-10-13: 146 OI2026-10-14: 146 OI2026-10-15: 146 OI2026-10-16: 146 OI2026-10-21: 146 OI2026-10-23: 146 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, 2026Viewing1460
Oct 21, 20261460
Oct 16, 20261460
Oct 15, 20261460
Oct 14, 20261460
Oct 13, 20261460
Oct 09, 20261460
Oct 08, 20261460
Oct 07, 20261460
Oct 06, 20261460
Oct 05, 2026146+10
Oct 02, 2026136No prior observation