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Contract OI history

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Mar 19, 2027 EXPIRATION

MRK $140.00 Call

MRK270319C00140000

Latest saved OI384Oct 23, 2026
Last change-7vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
MRK $140.00 call open interest history 12 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 3991990 2026-10-02: 377 OI2026-10-05: 377 OI2026-10-06: 399 OI2026-10-07: 398 OI2026-10-08: 398 OI2026-10-09: 387 OI2026-10-13: 389 OI2026-10-14: 389 OI2026-10-15: 379 OI2026-10-16: 379 OI2026-10-21: 391 OI2026-10-23: 384 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, 2026Viewing384-7
Oct 21, 2026391+12
Oct 16, 20263790
Oct 15, 2026379-10
Oct 14, 20263890
Oct 13, 2026389+2
Oct 09, 2026387-11
Oct 08, 20263980
Oct 07, 2026398-1
Oct 06, 2026399+22
Oct 05, 20263770
Oct 02, 2026377No prior observation