Acadian Asset Management
ALNY icon

Acadian Asset Management’s Alnylam Pharmaceuticals ALNY Stock Holding History

Acadian 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 		$186K Hold
621
– – ﹤0.01% 1652
2026
Q1 		$205K Sell
621
-20,687
-97% -$7.04M ﹤0.01% 1574
2025
Q4 		$8.47M Buy
21,308
+2,225
+12% +$985K 0.01% 514
2025
Q3 		$8.7M Buy
19,083
+11,364
+147% +$4.63M 0.02% 505
2025
Q2 		$2.52M Sell
7,719
-1,258
-14% -$348K 0.01% 760
2025
Q1 		$2.42M Sell
8,977
-7,699
-46% -$1.98M 0.01% 709
2024
Q4 		$3.92M Sell
16,676
-17,741
-52% -$4.67M 0.01% 588
2024
Q3 		$9.46M Sell
34,417
-2,893
-8% -$753K 0.03% 354
2024
Q2 		$9.06M Buy
37,310
+35,651
+2,149% +$5.63M 0.03% 375
2024
Q1 		$247K Buy
1,659
+386
+30% +$64.4K ﹤0.01% 1154
2023
Q4 		$243K Buy
1,273
+369
+41% +$62.9K ﹤0.01% 1197
2023
Q3 		$160K Buy
904
+311
+52% +$59.3K ﹤0.01% 1235
2023
Q2 		$112K Buy
+593
New +$118K ﹤0.01% 1384
2023
Q1 		– Sell
-917
Closed -$217K – 1722
2022
Q4 		$217K Hold
917
– – ﹤0.01% 1264
2022
Q3 		$182K Buy
+917
New +$175K ﹤0.01% 1233

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

Acadian Asset Management's ALNY Position: Q2 2026 in Review

Acadian Asset Management held its Alnylam Pharmaceuticals (ALNY) position steady in Q2 2026 at 621 shares worth $186K. The position accounts for ﹤0.01% of the portfolio, ranked #1652.

Acadian Asset Management first reported a position in ALNY in Q3 2022 and has held it in 15 quarters since. The position peaked at $9.46M in Q3 2024. 793 funds tracked by Wall St. Rank hold ALNY as of Q2 2026.

  • Acadian Asset Management held 621 shares of Alnylam Pharmaceuticals worth $186K as of Q2 2026.
  • Acadian Asset Management left its Alnylam Pharmaceuticals share count unchanged in Q2 2026.
  • Alnylam Pharmaceuticals made up ﹤0.01% of Acadian Asset Management's portfolio in Q2 2026, its #1652 holding.
  • Acadian Asset Management first reported a position in Alnylam Pharmaceuticals in Q3 2022 and has held it in 15 quarters since.
  • Acadian Asset Management's Alnylam Pharmaceuticals position peaked at $9.46M in Q3 2024.
  • 793 funds tracked by Wall St. Rank held Alnylam Pharmaceuticals as of Q2 2026.

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