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Contract OI history

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Oct 23, 2026 EXPIRATION

MRK $140.00 Put

MRK261023P00140000

Latest saved OI2,687Oct 23, 2026
Last change+100vs 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. 2,6871,3430 2026-10-02: 61 OI2026-10-05: 62 OI2026-10-06: 67 OI2026-10-07: 78 OI2026-10-08: 78 OI2026-10-09: 84 OI2026-10-13: 101 OI2026-10-14: 101 OI2026-10-15: 100 OI2026-10-16: 92 OI2026-10-21: 2,587 OI2026-10-23: 2,687 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, 2026Viewing2,687+100
Oct 21, 20262,587+2,495
Oct 16, 202692-8
Oct 15, 2026100-1
Oct 14, 20261010
Oct 13, 2026101+17
Oct 09, 202684+6
Oct 08, 2026780
Oct 07, 202678+11
Oct 06, 202667+5
Oct 05, 202662+1
Oct 02, 202661No prior observation