OITracker Cboe delayed data

Contract OI history

Back to CAT

Mar 19, 2027 EXPIRATION

CAT $600.00 Put

CAT270319P00600000

Latest saved OI440Oct 23, 2026
Last change+15vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
CAT $600.00 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. 4402200 2026-10-02: 227 OI2026-10-05: 229 OI2026-10-06: 203 OI2026-10-07: 236 OI2026-10-08: 236 OI2026-10-09: 247 OI2026-10-13: 250 OI2026-10-14: 250 OI2026-10-15: 287 OI2026-10-16: 351 OI2026-10-21: 425 OI2026-10-23: 440 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, 2026Viewing440+15
Oct 21, 2026425+74
Oct 16, 2026351+64
Oct 15, 2026287+37
Oct 14, 20262500
Oct 13, 2026250+3
Oct 09, 2026247+11
Oct 08, 20262360
Oct 07, 2026236+33
Oct 06, 2026203-26
Oct 05, 2026229+2
Oct 02, 2026227No prior observation