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Contract OI history

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Dec 18, 2026 EXPIRATION

UNH $400.00 Put

UNH261218P00400000

Latest saved OI1,427Oct 23, 2026
Last change+122vs 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. 1,4277130 2026-10-02: 1,056 OI2026-10-05: 1,056 OI2026-10-06: 1,056 OI2026-10-07: 1,076 OI2026-10-08: 1,076 OI2026-10-09: 1,113 OI2026-10-14: 1,141 OI2026-10-15: 1,228 OI2026-10-16: 1,229 OI2026-10-21: 1,305 OI2026-10-23: 1,427 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, 2026Viewing1,427+122
Oct 21, 20261,305+76
Oct 16, 20261,229+1
Oct 15, 20261,228+87
Oct 14, 20261,141+28
Oct 09, 20261,113+37
Oct 08, 20261,0760
Oct 07, 20261,076+20
Oct 06, 20261,0560
Oct 05, 20261,0560
Oct 02, 20261,056No prior observation