AIM
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Aigen Investment Management’s Merck MRK Stock Holding History

Aigen Investment Management’s Portfolio MRK Stock Details MRK Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2025
Q4 		– Sell
-8,860
Closed -$744K – 853
2025
Q3 		$744K Buy
+8,860
New +$730K 0.12% 274
2025
Q2 		– Sell
-15,064
Closed -$1.35M – 967
2025
Q1 		$1.35M Sell
15,064
-28,834
-66% -$2.69M 0.22% 138
2024
Q4 		$4.37M Buy
43,898
+19,057
+77% +$1.96M 0.77% 10
2024
Q3 		$2.82M Sell
24,841
-4,491
-15% -$534K 0.55% 26
2024
Q2 		$3.63M Buy
29,332
+14,092
+92% +$1.82M 0.71% 12
2024
Q1 		$2.01M Buy
15,240
+6,327
+71% +$780K 0.44% 44
2023
Q4 		$972K Sell
8,913
-4,957
-36% -$515K 0.17% 161
2023
Q3 		$1.43M Buy
+13,870
New +$1.49M 0.27% 85
2023
Q1 		– Sell
-78,042
Closed -$8.66M – 742
2022
Q4 		$8.66M Buy
78,042
+59,587
+323% +$6.09M 1.23% 10
2022
Q3 		$1.59M Sell
18,455
-22,577
-55% -$2.02M 0.23% 130
2022
Q2 		$3.74M Buy
+41,032
New +$3.64M 0.63% 37
2022
Q1 		– Sell
-155,807
Closed -$11.6M – 879
2021
Q4 		$11.6M Buy
+155,807
New +$12.4M 0.71% 12
2020
Q4 		– Sell
-99,493
Closed -$7.88M – 943
2020
Q3 		$7.88M Buy
+99,493
New +$7.79M 1.01% 3
2020
Q2 		– Sell
-71,472
Closed -$5.25M – 1121
2020
Q1 		$5.25M Buy
+71,472
New +$5.62M 0.7% 8

Other funds holding MRK

Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Wellington Management Group
Wellington Management Group Boston, Massachusetts $580B AUM 38.23% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Charles Schwab
Charles Schwab San Francisco, California $751B AUM 38.74% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
Norges Bank
Norges Bank Oslo, Norway $1T AUM
JP Morgan Chase
JP Morgan Chase New York $1.81T AUM 41.13% 1-Year Est. Return

Aigen Investment Management's MRK Position: Q4 2025 in Review

Aigen Investment Management sold out of Merck (MRK) in Q4 2025, closing a stake of 8,860 shares — an estimated $744K sold.

Aigen Investment Management first reported a position in MRK in Q1 2020 and held it in 14 quarters. The position peaked at $11.6M in Q4 2021. 3,660 funds tracked by Wall St. Rank hold MRK as of Q4 2025.

  • Aigen Investment Management reported no remaining Merck position as of Q4 2025 after selling out during the quarter.
  • Aigen Investment Management sold 8,860 Merck shares in Q4 2025, an estimated $744K.
  • Aigen Investment Management first reported a position in Merck in Q1 2020 and held it in 14 quarters.
  • Aigen Investment Management's Merck position peaked at $11.6M in Q4 2021.
  • 3,660 funds tracked by Wall St. Rank held Merck as of Q4 2025.

Based on Aigen Investment Management's 13F filing for Q4 2025, filed 13 Feb 2026.