OITracker Cboe delayed data

Contract OI history

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Jan 21, 2028 EXPIRATION

CAT $520.00 Put

CAT280121P00520000

Latest saved OI102Oct 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 $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. 102510 2026-10-02: 102 OI2026-10-05: 102 OI2026-10-06: 102 OI2026-10-07: 102 OI2026-10-08: 102 OI2026-10-09: 102 OI2026-10-13: 102 OI2026-10-14: 102 OI2026-10-15: 102 OI2026-10-16: 102 OI2026-10-21: 102 OI2026-10-23: 102 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, 2026Viewing1020
Oct 21, 20261020
Oct 16, 20261020
Oct 15, 20261020
Oct 14, 20261020
Oct 13, 20261020
Oct 09, 20261020
Oct 08, 20261020
Oct 07, 20261020
Oct 06, 20261020
Oct 05, 20261020
Oct 02, 2026102No prior observation