OITracker Cboe delayed data

Contract OI history

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Dec 17, 2027 EXPIRATION

CAT $660.00 Put

CAT271217P00660000

Latest saved OI450Oct 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 $660.00 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. 4502250 2026-10-02: 144 OI2026-10-05: 144 OI2026-10-06: 150 OI2026-10-07: 199 OI2026-10-08: 199 OI2026-10-09: 199 OI2026-10-13: 449 OI2026-10-14: 449 OI2026-10-15: 450 OI2026-10-16: 450 OI2026-10-21: 450 OI2026-10-23: 450 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, 2026Viewing4500
Oct 21, 20264500
Oct 16, 20264500
Oct 15, 2026450+1
Oct 14, 20264490
Oct 13, 2026449+250
Oct 09, 20261990
Oct 08, 20261990
Oct 07, 2026199+49
Oct 06, 2026150+6
Oct 05, 20261440
Oct 02, 2026144No prior observation