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Contract OI history

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Apr 16, 2027 EXPIRATION

MRK $120.00 Put

MRK270416P00120000

Latest saved OI689Oct 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 $120.00 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. 6893440 2026-10-02: 24 OI2026-10-05: 47 OI2026-10-06: 129 OI2026-10-07: 181 OI2026-10-08: 181 OI2026-10-09: 292 OI2026-10-13: 292 OI2026-10-14: 292 OI2026-10-15: 364 OI2026-10-16: 364 OI2026-10-21: 675 OI2026-10-23: 689 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, 2026Viewing689+14
Oct 21, 2026675+311
Oct 16, 20263640
Oct 15, 2026364+72
Oct 14, 20262920
Oct 13, 20262920
Oct 09, 2026292+111
Oct 08, 20261810
Oct 07, 2026181+52
Oct 06, 2026129+82
Oct 05, 202647+23
Oct 02, 202624No prior observation