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Contract OI history

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Jan 21, 2028 EXPIRATION

UNH $420.00 Put

UNH280121P00420000

Latest saved OI372Oct 23, 2026
Last change0vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
UNH $420.00 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. 3721860 2026-10-02: 364 OI2026-10-05: 364 OI2026-10-06: 364 OI2026-10-07: 364 OI2026-10-08: 364 OI2026-10-09: 369 OI2026-10-14: 369 OI2026-10-15: 369 OI2026-10-16: 362 OI2026-10-21: 372 OI2026-10-23: 372 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, 2026Viewing3720
Oct 21, 2026372+10
Oct 16, 2026362-7
Oct 15, 20263690
Oct 14, 20263690
Oct 09, 2026369+5
Oct 08, 20263640
Oct 07, 20263640
Oct 06, 20263640
Oct 05, 20263640
Oct 02, 2026364No prior observation