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Contract OI history

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Nov 20, 2026 EXPIRATION

MRK $155.00 Call

MRK261120C00155000

Latest saved OI3,762Oct 23, 2026
Last change+74vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
MRK $155.00 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. 3,7621,8810 2026-10-02: 1,803 OI2026-10-05: 1,825 OI2026-10-06: 1,888 OI2026-10-07: 1,897 OI2026-10-08: 1,897 OI2026-10-09: 1,926 OI2026-10-13: 3,438 OI2026-10-14: 3,438 OI2026-10-15: 3,535 OI2026-10-16: 3,524 OI2026-10-21: 3,688 OI2026-10-23: 3,762 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, 2026Viewing3,762+74
Oct 21, 20263,688+164
Oct 16, 20263,524-11
Oct 15, 20263,535+97
Oct 14, 20263,4380
Oct 13, 20263,438+1,512
Oct 09, 20261,926+29
Oct 08, 20261,8970
Oct 07, 20261,897+9
Oct 06, 20261,888+63
Oct 05, 20261,825+22
Oct 02, 20261,803No prior observation