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Contract OI history

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Dec 15, 2028 EXPIRATION

UNH $400.00 Put

UNH281215P00400000

Latest saved OI169Oct 23, 2026
Last change+8vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
UNH $400.00 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. 198990 2026-10-02: 198 OI2026-10-05: 178 OI2026-10-06: 178 OI2026-10-07: 178 OI2026-10-08: 178 OI2026-10-09: 178 OI2026-10-14: 175 OI2026-10-15: 166 OI2026-10-16: 161 OI2026-10-21: 161 OI2026-10-23: 169 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, 2026Viewing169+8
Oct 21, 20261610
Oct 16, 2026161-5
Oct 15, 2026166-9
Oct 14, 2026175-3
Oct 09, 20261780
Oct 08, 20261780
Oct 07, 20261780
Oct 06, 20261780
Oct 05, 2026178-20
Oct 02, 2026198No prior observation