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Contract OI history

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Nov 20, 2026 EXPIRATION

UMC $21.00 Put

UMC261120P00021000

Latest saved OI288Oct 23, 2026
Last change+6vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
UMC $21.00 put open interest history 12 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 3671830 2026-10-02: 84 OI2026-10-05: 83 OI2026-10-06: 359 OI2026-10-07: 359 OI2026-10-08: 366 OI2026-10-09: 367 OI2026-10-13: 356 OI2026-10-14: 358 OI2026-10-15: 245 OI2026-10-16: 267 OI2026-10-21: 282 OI2026-10-23: 288 OI Oct 02, 2026Oct 23, 2026

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

UMC contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing288+6
Oct 21, 2026282+15
Oct 16, 2026267+22
Oct 15, 2026245-113
Oct 14, 2026358+2
Oct 13, 2026356-11
Oct 09, 2026367+1
Oct 08, 2026366+7
Oct 07, 20263590
Oct 06, 2026359+276
Oct 05, 202683-1
Oct 02, 202684No prior observation