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Contract OI history

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Jun 17, 2027 EXPIRATION

MRK $190.00 Call

MRK270617C00190000

Latest saved OI440Oct 23, 2026
Last change+5vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
MRK $190.00 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. 4522260 2026-10-02: 358 OI2026-10-05: 358 OI2026-10-06: 358 OI2026-10-07: 360 OI2026-10-08: 360 OI2026-10-09: 373 OI2026-10-13: 449 OI2026-10-14: 449 OI2026-10-15: 450 OI2026-10-16: 452 OI2026-10-21: 435 OI2026-10-23: 440 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, 2026Viewing440+5
Oct 21, 2026435-17
Oct 16, 2026452+2
Oct 15, 2026450+1
Oct 14, 20264490
Oct 13, 2026449+76
Oct 09, 2026373+13
Oct 08, 20263600
Oct 07, 2026360+2
Oct 06, 20263580
Oct 05, 20263580
Oct 02, 2026358No prior observation