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O'Shaughnessy Asset Management’s Alnylam Pharmaceuticals ALNY Stock Holding History

O'Shaughnessy Asset Management’s Portfolio ALNY Stock Details ALNY Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$2.38M Sell
7,910
-1,727
-18% -$521K 0.01% 838
2026
Q1 		$3.19M Sell
9,637
-290
-3% -$98.7K 0.02% 683
2025
Q4 		$3.95M Buy
9,927
+619
+7% +$274K 0.02% 588
2025
Q3 		$4.24M Buy
9,308
+2,872
+45% +$1.17M 0.02% 567
2025
Q2 		$2.1M Buy
6,436
+2,633
+69% +$729K 0.01% 752
2025
Q1 		$1.03M Buy
3,803
+360
+10% +$92.5K 0.01% 973
2024
Q4 		$810K Sell
3,443
-286
-8% -$75.2K 0.01% 1055
2024
Q3 		$1.06M Buy
3,729
+2,736
+276% +$712K 0.01% 883
2024
Q2 		$241K Sell
993
-1,188
-54% -$188K ﹤0.01% 1466
2024
Q1 		$326K Buy
2,181
+191
+10% +$31.9K ﹤0.01% 1276
2023
Q4 		$381K Buy
1,990
+396
+25% +$67.5K 0.01% 1119
2023
Q3 		$282K Buy
1,594
+258
+19% +$49.2K ﹤0.01% 1146
2023
Q2 		$254K Buy
+1,336
New +$265K ﹤0.01% 1115
2023
Q1 		– Sell
-1,008
Closed -$240K – 1479
2022
Q4 		$240K Buy
+1,008
New +$215K ﹤0.01% 1051
2021
Q4 		– Sell
-220
Closed -$42K – 1297
2021
Q3 		$42K Buy
220
+92
+72% +$17.3K ﹤0.01% 1709
2021
Q2 		$22K Hold
128
– – ﹤0.01% 1805
2021
Q1 		$18K Hold
128
– – ﹤0.01% 1653
2020
Q4 		$17K Sell
128
-2
-2% -$267 ﹤0.01% 1442
2020
Q3 		$19K Sell
130
-8
-6% -$1.14K ﹤0.01% 1256
2020
Q2 		$20K Buy
138
+117
+557% +$15.8K ﹤0.01% 1145
2020
Q1 		$2K Buy
21
+11
+110% +$1.27K ﹤0.01% 1143
2019
Q4 		$1K Buy
+10
New +$997 ﹤0.01% 1712

Other funds holding ALNY

Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
Capital World Investors
Capital World Investors Los Angeles, California $846B AUM 46.74% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Capital Research Global Investors
Capital Research Global Investors Los Angeles, California $717B AUM 35.42% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
T. Rowe Price Investment Management
T. Rowe Price Investment Management Baltimore, Maryland $153B AUM 38.14% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.38T AUM 44.17% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

O'Shaughnessy Asset Management's ALNY Position: Q2 2026 in Review

O'Shaughnessy Asset Management reduced its Alnylam Pharmaceuticals (ALNY) stake by 18% in Q2 2026, selling an estimated $521K and leaving 7,910 shares worth $2.38M. The position accounts for 0.01% of the portfolio, ranked #838.

O'Shaughnessy Asset Management first reported a position in ALNY in Q4 2019 and has held it in 22 quarters since. The position peaked at $4.24M in Q3 2025. 793 funds tracked by Wall St. Rank hold ALNY as of Q2 2026.

  • O'Shaughnessy Asset Management held 7,910 shares of Alnylam Pharmaceuticals worth $2.38M as of Q2 2026.
  • O'Shaughnessy Asset Management sold 1,727 Alnylam Pharmaceuticals shares in Q2 2026, an estimated $521K.
  • Alnylam Pharmaceuticals made up 0.01% of O'Shaughnessy Asset Management's portfolio in Q2 2026, its #838 holding.
  • O'Shaughnessy Asset Management first reported a position in Alnylam Pharmaceuticals in Q4 2019 and has held it in 22 quarters since.
  • O'Shaughnessy Asset Management's Alnylam Pharmaceuticals position peaked at $4.24M in Q3 2025.
  • 793 funds tracked by Wall St. Rank held Alnylam Pharmaceuticals as of Q2 2026.

Based on O'Shaughnessy Asset Management's 13F filing for Q2 2026, filed 13 Aug 2026.