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Contract OI history

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Jun 17, 2027 EXPIRATION

MRK $140.00 Put

MRK270617P00140000

Latest saved OI538Oct 23, 2026
Last change+4vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
MRK $140.00 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. 5392690 2026-10-02: 507 OI2026-10-05: 514 OI2026-10-06: 521 OI2026-10-07: 529 OI2026-10-08: 529 OI2026-10-09: 536 OI2026-10-13: 539 OI2026-10-14: 539 OI2026-10-15: 537 OI2026-10-16: 537 OI2026-10-21: 534 OI2026-10-23: 538 OI Oct 02, 2026Oct 23, 2026

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

MRK contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing538+4
Oct 21, 2026534-3
Oct 16, 20265370
Oct 15, 2026537-2
Oct 14, 20265390
Oct 13, 2026539+3
Oct 09, 2026536+7
Oct 08, 20265290
Oct 07, 2026529+8
Oct 06, 2026521+7
Oct 05, 2026514+7
Oct 02, 2026507No prior observation