OITracker Cboe delayed data

Contract OI history

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Nov 20, 2026 EXPIRATION

CAT $650.00 Put

CAT261120P00650000

Latest saved OI478Oct 23, 2026
Last change+28vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
CAT $650.00 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. 4782390 2026-10-02: 269 OI2026-10-05: 265 OI2026-10-06: 322 OI2026-10-07: 344 OI2026-10-08: 344 OI2026-10-09: 348 OI2026-10-13: 340 OI2026-10-14: 340 OI2026-10-15: 344 OI2026-10-16: 358 OI2026-10-21: 450 OI2026-10-23: 478 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, 2026Viewing478+28
Oct 21, 2026450+92
Oct 16, 2026358+14
Oct 15, 2026344+4
Oct 14, 20263400
Oct 13, 2026340-8
Oct 09, 2026348+4
Oct 08, 20263440
Oct 07, 2026344+22
Oct 06, 2026322+57
Oct 05, 2026265-4
Oct 02, 2026269No prior observation