OITracker Cboe delayed data

Contract OI history

Back to CAT

Sep 17, 2027 EXPIRATION

CAT $700.00 Put

CAT270917P00700000

Latest saved OI211Oct 23, 2026
Last change+2vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
CAT $700.00 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. 2111050 2026-10-02: 126 OI2026-10-05: 128 OI2026-10-06: 127 OI2026-10-07: 127 OI2026-10-08: 127 OI2026-10-09: 138 OI2026-10-13: 146 OI2026-10-14: 146 OI2026-10-15: 156 OI2026-10-16: 170 OI2026-10-21: 209 OI2026-10-23: 211 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, 2026Viewing211+2
Oct 21, 2026209+39
Oct 16, 2026170+14
Oct 15, 2026156+10
Oct 14, 20261460
Oct 13, 2026146+8
Oct 09, 2026138+11
Oct 08, 20261270
Oct 07, 20261270
Oct 06, 2026127-1
Oct 05, 2026128+2
Oct 02, 2026126No prior observation