SEC 13F Intelligence

Arrowstreet Capital, Limited Partnership / MRK

Arrowstreet Capital, Limited Partnership’s Merck & Co Inc Position

Does Arrowstreet Capital, Limited Partnership own Merck & Co Inc (MRK)? Yes — 2.94M shares worth $353M (+0.19% of its 13F portfolio) as of Q1 2026, down from 9.94M shares the prior filed quarter.

Position Value
$353M
Q1 2026
Shares
2.94M
% of Portfolio
+0.19%
Quarters Held
30
currently held

Position History MRK

Reported value by quarter
Q4 ’18: $466MQ4 ’18Q1 ’19: $633MQ2 ’19: $775MQ3 ’19: $702MQ4 ’19: $929MQ4 ’19Q1 ’20: $896MQ2 ’20: $669MQ3 ’20: $454MQ4 ’20: $336MQ4 ’20Q1 ’21: $498MQ2 ’21: $420MQ3 ’21: $493MQ4 ’21: $638MQ4 ’21Q1 ’22: $801MQ2 ’22: $854MQ3 ’22: $849MQ4 ’22: $1MQ4 ’22Q1 ’23: $1MQ2 ’23: $1MQ3 ’23: $977,175Q4 ’23: $608,146Q4 ’23Q1 ’24: $626,460Q2 ’24: $768,451Q3 ’24: $790MQ4 ’24: $644MQ4 ’24Q1 ’25: $1.3BQ2 ’25: $1.5BQ3 ’25: $1.6BQ4 ’25: $1.0BQ4 ’25Q1 ’26: $353Mfilingsflow.com
QuarterSharesValue% of Portfolio
Q1 20262.94M$353M+0.19%
Q4 20259.94M$1.0B+0.61%
Q3 202518.71M$1.6B+0.99%
Q2 202519.46M$1.5B+1.09%
Q1 202514.36M$1.3B+1.05%
Q4 20246.47M$644M+0.52%
Q3 20246.96M$790M+0.67%
Q2 20246.21M$768,451+0.68%
Q1 20244.75M$626,460+0.58%
Q4 20235.58M$608,146+0.64%
Q3 20239.49M$977,175+1.18%
Q2 202312.14M$1M+1.70%
Q1 202310.77M$1M+1.48%
Q4 20229.08M$1M+1.41%
Q3 20229.86M$849M+1.25%
Q2 20229.37M$854M+1.21%
Q1 20229.76M$801M+1.00%
Q4 20218.32M$638M+0.78%
Q3 20216.57M$493M+0.62%
Q2 20215.39M$420M+0.52%
Q1 20216.46M$498M+0.67%
Q4 20204.11M$336M+0.47%
Q3 20205.48M$454M+0.72%
Q2 20208.65M$669M+1.23%
Q1 202011.65M$896M+2.52%
Q4 201910.21M$929M+2.16%
Q3 20198.34M$702M+1.64%
Q2 20199.24M$775M+1.73%
Q1 20197.61M$633M+1.50%
Q4 20186.10M$466M+1.22%

Common-stock position only; options are excluded. Quarters where the fund filed no 13F or reported no position are absent. See Arrowstreet Capital, Limited Partnership’s full portfolio or all institutional holders of MRK.