OITracker Cboe delayed data

Contract OI history

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Jan 15, 2027 EXPIRATION

CAT $520.00 Put

CAT270115P00520000

Latest saved OI404Oct 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. 4042020 2026-10-02: 401 OI2026-10-05: 389 OI2026-10-06: 392 OI2026-10-07: 388 OI2026-10-08: 388 OI2026-10-09: 390 OI2026-10-13: 391 OI2026-10-14: 391 OI2026-10-15: 391 OI2026-10-16: 391 OI2026-10-21: 403 OI2026-10-23: 404 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, 2026Viewing404+1
Oct 21, 2026403+12
Oct 16, 20263910
Oct 15, 20263910
Oct 14, 20263910
Oct 13, 2026391+1
Oct 09, 2026390+2
Oct 08, 20263880
Oct 07, 2026388-4
Oct 06, 2026392+3
Oct 05, 2026389-12
Oct 02, 2026401No prior observation