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Contract OI history

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Apr 16, 2027 EXPIRATION

MRK $140.00 Put

MRK270416P00140000

Latest saved OI1,223Oct 23, 2026
Last change0vs 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. 1,2236110 2026-10-02: 367 OI2026-10-05: 368 OI2026-10-06: 369 OI2026-10-07: 379 OI2026-10-08: 379 OI2026-10-09: 372 OI2026-10-13: 378 OI2026-10-14: 378 OI2026-10-15: 381 OI2026-10-16: 381 OI2026-10-21: 1,223 OI2026-10-23: 1,223 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, 2026Viewing1,2230
Oct 21, 20261,223+842
Oct 16, 20263810
Oct 15, 2026381+3
Oct 14, 20263780
Oct 13, 2026378+6
Oct 09, 2026372-7
Oct 08, 20263790
Oct 07, 2026379+10
Oct 06, 2026369+1
Oct 05, 2026368+1
Oct 02, 2026367No prior observation