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Israel Englander’s Alnylam Pharmaceuticals ALNY Stock Holding History

Israel Englander’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 		$6.08M Sell
20,200
-2,600
-11% -$784K ﹤0.01% 2801
2026
Q1 		$7.54M Buy
22,800
+21,200
+1,325% +$7.21M ﹤0.01% 2469
2025
Q4 		$636K Sell
1,600
-300
-16% -$133K ﹤0.01% 4792
2025
Q3 		$866K Buy
1,900
+400
+27% +$163K ﹤0.01% 4724
2025
Q2 		$489K Sell
1,500
-7,000
-82% -$1.94M ﹤0.01% 4929
2025
Q1 		$2.3M Sell
8,500
-4,800
-36% -$1.23M ﹤0.01% 3658
2024
Q4 		$3.13M Sell
13,300
-3,400
-20% -$894K ﹤0.01% 3265
2024
Q3 		$4.59M Buy
+16,700
New +$4.35M ﹤0.01% 2916
2024
Q2 		– Sell
-4,500
Closed -$673K – 5832
2024
Q1 		$673K Buy
+4,500
New +$751K ﹤0.01% 4609
2023
Q4 		– Sell
-8,700
Closed -$1.54M – 6033
2023
Q3 		$1.54M Sell
8,700
-56,500
-87% -$10.8M ﹤0.01% 3814
2023
Q2 		$12.4M Buy
+65,200
New +$12.9M 0.01% 1806
2022
Q1 		– Sell
-9,500
Closed -$1.61M – 6851
2021
Q4 		$1.61M Buy
+9,500
New +$1.77M ﹤0.01% 3962
2016
Q1 		– Sell
-50,000
Closed -$4.71M – 3233
2015
Q4 		$4.71M Buy
+50,000
New +$4.64M 0.01% 1402
2015
Q2 		– Sell
-200,000
Closed -$20.9M – 3282
2015
Q1 		$20.9M Buy
+200,000
New +$20.3M 0.04% 641
2014
Q3 		– Sell
-22,200
Closed -$1.4M – 3661
2014
Q2 		$1.4M Buy
+22,200
New +$1.32M ﹤0.01% 1996
2014
Q1 		– Sell
-7,000
Closed -$450K – 3418
2013
Q4 		$450K Buy
+7,000
New +$418K ﹤0.01% 2777

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

Israel Englander's ALNY Position: Q2 2026 in Review

Israel Englander reduced its Alnylam Pharmaceuticals (ALNY) stake by 29% in Q2 2026, selling an estimated $39.8M and leaving 316,001 shares worth $95.1M. The position accounts for 0.03% of the portfolio, ranked #533.

Israel Englander first reported a position in ALNY in Q3 2013 and has held it in 43 quarters since. The position peaked at $251M in Q3 2025. 784 funds tracked by Wall St. Rank hold ALNY as of Q2 2026.

  • Israel Englander held 316,001 shares of Alnylam Pharmaceuticals worth $95.1M as of Q2 2026.
  • Israel Englander sold 131,886 Alnylam Pharmaceuticals shares in Q2 2026, an estimated $39.8M.
  • Alnylam Pharmaceuticals made up 0.03% of Israel Englander's portfolio in Q2 2026, its #533 holding.
  • Israel Englander first reported a position in Alnylam Pharmaceuticals in Q3 2013 and has held it in 43 quarters since.
  • Israel Englander's Alnylam Pharmaceuticals position peaked at $251M in Q3 2025.
  • 784 funds tracked by Wall St. Rank held Alnylam Pharmaceuticals as of Q2 2026.

Based on Millennium Management's 13F filing for Q2 2026, filed 14 Aug 2026.