OITracker Cboe delayed data

Contract OI history

Back to CAT

Jan 15, 2027 EXPIRATION

CAT $540.00 Put

CAT270115P00540000

Latest saved OI380Oct 23, 2026
Last change+81vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
CAT $540.00 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. 3801900 2026-10-02: 286 OI2026-10-05: 284 OI2026-10-06: 272 OI2026-10-07: 243 OI2026-10-08: 243 OI2026-10-09: 243 OI2026-10-13: 244 OI2026-10-14: 244 OI2026-10-15: 233 OI2026-10-16: 241 OI2026-10-21: 299 OI2026-10-23: 380 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, 2026Viewing380+81
Oct 21, 2026299+58
Oct 16, 2026241+8
Oct 15, 2026233-11
Oct 14, 20262440
Oct 13, 2026244+1
Oct 09, 20262430
Oct 08, 20262430
Oct 07, 2026243-29
Oct 06, 2026272-12
Oct 05, 2026284-2
Oct 02, 2026286No prior observation