OITracker Cboe delayed data

Contract OI history

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Jan 21, 2028 EXPIRATION

UNH $320.00 Put

UNH280121P00320000

Latest saved OI447Oct 23, 2026
Last change-2vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
UNH $320.00 put open interest history 11 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 4612300 2026-10-02: 458 OI2026-10-05: 461 OI2026-10-06: 457 OI2026-10-07: 451 OI2026-10-08: 451 OI2026-10-09: 445 OI2026-10-14: 449 OI2026-10-15: 449 OI2026-10-16: 449 OI2026-10-21: 449 OI2026-10-23: 447 OI Oct 02, 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, 2026Viewing447-2
Oct 21, 20264490
Oct 16, 20264490
Oct 15, 20264490
Oct 14, 2026449+4
Oct 09, 2026445-6
Oct 08, 20264510
Oct 07, 2026451-6
Oct 06, 2026457-4
Oct 05, 2026461+3
Oct 02, 2026458No prior observation