OITracker Cboe delayed data

Contract OI history

Back to UNH

Oct 30, 2026 EXPIRATION

UNH $397.50 Put

UNH261030P00397500

Latest saved OI489Oct 23, 2026
Last change+175vs previous saved observation
Saved market days6Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
UNH $397.50 put open interest history 6 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 4892440 2026-10-09: 0 OI2026-10-14: 3 OI2026-10-15: 7 OI2026-10-16: 12 OI2026-10-21: 314 OI2026-10-23: 489 OI Oct 09, 2026Oct 23, 2026

All saved dates are shown. Changes compare consecutive saved observations. Missing observations are not filled with zero.

UNH contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing489+175
Oct 21, 2026314+302
Oct 16, 202612+5
Oct 15, 20267+4
Oct 14, 20263+3
Oct 09, 20260No prior observation