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Contract OI history

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Jan 15, 2027 EXPIRATION

UMC $21.00 Put

UMC270115P00021000

Latest saved OI564Oct 23, 2026
Last change-2vs 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. 5662830 2026-10-02: 515 OI2026-10-05: 537 OI2026-10-06: 556 OI2026-10-07: 556 OI2026-10-08: 556 OI2026-10-09: 556 OI2026-10-13: 556 OI2026-10-14: 556 OI2026-10-15: 558 OI2026-10-16: 566 OI2026-10-21: 566 OI2026-10-23: 564 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, 2026Viewing564-2
Oct 21, 20265660
Oct 16, 2026566+8
Oct 15, 2026558+2
Oct 14, 20265560
Oct 13, 20265560
Oct 09, 20265560
Oct 08, 20265560
Oct 07, 20265560
Oct 06, 2026556+19
Oct 05, 2026537+22
Oct 02, 2026515No prior observation