Brown Advisory
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Brown Advisory’s Alnylam Pharmaceuticals ALNY Stock Holding History

Brown Advisory’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 		$23.3M Sell
77,398
-56,555
-42% -$17.1M 0.04% 326
2026
Q1 		$44.3M Buy
133,953
+109,095
+439% +$37.1M 0.07% 207
2025
Q4 		$9.88M Sell
24,858
-1,734
-7% -$767K 0.01% 423
2025
Q3 		$12.1M Sell
26,592
-2,879
-10% -$1.17M 0.02% 392
2025
Q2 		$9.61M Sell
29,471
-1,914
-6% -$530K 0.01% 413
2025
Q1 		$8.47M Sell
31,385
-2,495
-7% -$641K 0.01% 423
2024
Q4 		$7.97M Sell
33,880
-5,243
-13% -$1.38M 0.01% 455
2024
Q3 		$10.8M Sell
39,123
-3,234
-8% -$842K 0.01% 413
2024
Q2 		$10.3M Sell
42,357
-3,129
-7% -$494K 0.01% 410
2024
Q1 		$6.8M Buy
45,486
+6,757
+17% +$1.13M 0.01% 458
2023
Q4 		$7.41M Buy
38,729
+3,517
+10% +$599K 0.01% 441
2023
Q3 		$6.24M Sell
35,212
-376
-1% -$71.7K 0.01% 444
2023
Q2 		$6.76M Buy
35,588
+4,290
+14% +$851K 0.01% 439
2023
Q1 		$6.27M Sell
31,298
-517
-2% -$109K 0.01% 448
2022
Q4 		$7.56M Sell
31,815
-1,327
-4% -$283K 0.01% 421
2022
Q3 		$6.63M Sell
33,142
-2,105
-6% -$402K 0.01% 418
2022
Q2 		$5.14M Sell
35,247
-7,361
-17% -$1.04M 0.01% 455
2022
Q1 		$6.96M Buy
42,608
+16,030
+60% +$2.44M 0.01% 435
2021
Q4 		$4.51M Buy
+26,578
New +$4.94M 0.01% 492

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 $3.37T AUM 44.26% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

Brown Advisory's ALNY Position: Q2 2026 in Review

Brown Advisory reduced its Alnylam Pharmaceuticals (ALNY) stake by 42% in Q2 2026, selling an estimated $17.1M and leaving 77,398 shares worth $23.3M. The position accounts for 0.04% of the portfolio, ranked #326.

Brown Advisory first reported a position in ALNY in Q4 2021 and has held it in 19 quarters since. The position peaked at $44.3M in Q1 2026. 784 funds tracked by Wall St. Rank hold ALNY as of Q2 2026.

  • Brown Advisory held 77,398 shares of Alnylam Pharmaceuticals worth $23.3M as of Q2 2026.
  • Brown Advisory sold 56,555 Alnylam Pharmaceuticals shares in Q2 2026, an estimated $17.1M.
  • Alnylam Pharmaceuticals made up 0.04% of Brown Advisory's portfolio in Q2 2026, its #326 holding.
  • Brown Advisory first reported a position in Alnylam Pharmaceuticals in Q4 2021 and has held it in 19 quarters since.
  • Brown Advisory's Alnylam Pharmaceuticals position peaked at $44.3M in Q1 2026.
  • 784 funds tracked by Wall St. Rank held Alnylam Pharmaceuticals as of Q2 2026.

Based on Brown Advisory's 13F filing for Q2 2026, filed 14 Aug 2026.