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Contract OI history

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Nov 20, 2026 EXPIRATION

MRK $125.00 Put

MRK261120P00125000

Latest saved OI2,144Oct 23, 2026
Last change-14vs 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. 2,1581,0790 2026-10-02: 1,913 OI2026-10-05: 1,935 OI2026-10-06: 1,964 OI2026-10-07: 1,975 OI2026-10-08: 1,975 OI2026-10-09: 1,993 OI2026-10-13: 1,988 OI2026-10-14: 1,988 OI2026-10-15: 1,925 OI2026-10-16: 2,141 OI2026-10-21: 2,158 OI2026-10-23: 2,144 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, 2026Viewing2,144-14
Oct 21, 20262,158+17
Oct 16, 20262,141+216
Oct 15, 20261,925-63
Oct 14, 20261,9880
Oct 13, 20261,988-5
Oct 09, 20261,993+18
Oct 08, 20261,9750
Oct 07, 20261,975+11
Oct 06, 20261,964+29
Oct 05, 20261,935+22
Oct 02, 20261,913No prior observation