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Contract OI history

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Dec 18, 2026 EXPIRATION

MRK $125.00 Put

MRK261218P00125000

Latest saved OI1,071Oct 23, 2026
Last change+40vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
MRK $125.00 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. 1,0715350 2026-10-02: 813 OI2026-10-05: 938 OI2026-10-06: 958 OI2026-10-07: 965 OI2026-10-08: 965 OI2026-10-09: 979 OI2026-10-13: 979 OI2026-10-14: 979 OI2026-10-15: 994 OI2026-10-16: 1,008 OI2026-10-21: 1,031 OI2026-10-23: 1,071 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, 2026Viewing1,071+40
Oct 21, 20261,031+23
Oct 16, 20261,008+14
Oct 15, 2026994+15
Oct 14, 20269790
Oct 13, 20269790
Oct 09, 2026979+14
Oct 08, 20269650
Oct 07, 2026965+7
Oct 06, 2026958+20
Oct 05, 2026938+125
Oct 02, 2026813No prior observation