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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 		$12.9M Buy
43,000
+20,600
+92% +$6.21M ﹤0.01% 2031
2026
Q1 		$7.41M Buy
22,400
+13,000
+138% +$4.42M ﹤0.01% 2497
2025
Q4 		$3.74M Sell
9,400
-26,100
-74% -$11.6M ﹤0.01% 3332
2025
Q3 		$16.2M Sell
35,500
-9,600
-21% -$3.91M 0.01% 1907
2025
Q2 		$14.7M Sell
45,100
-15,300
-25% -$4.23M 0.01% 1878
2025
Q1 		$16.3M Buy
60,400
+59,000
+4,214% +$15.2M 0.01% 1725
2024
Q4 		$329K Sell
1,400
-6,100
-81% -$1.6M ﹤0.01% 5020
2024
Q3 		$2.06M Buy
+7,500
New +$1.95M ﹤0.01% 3676
2024
Q2 		– Sell
-2,300
Closed -$344K – 5831
2024
Q1 		$344K Sell
2,300
-3,800
-62% -$634K ﹤0.01% 5049
2023
Q4 		$1.17M Sell
6,100
-18,200
-75% -$3.1M ﹤0.01% 4033
2023
Q3 		$4.3M Sell
24,300
-20,900
-46% -$3.99M ﹤0.01% 2831
2023
Q2 		$8.59M Buy
+45,200
New +$8.96M ﹤0.01% 2165
2023
Q1 		– Sell
-17,900
Closed -$4.25M – 6314
2022
Q4 		$4.25M Buy
+17,900
New +$3.82M ﹤0.01% 2954
2022
Q3 		– Sell
-50,800
Closed -$7.41M – 7027
2022
Q2 		$7.41M Buy
+50,800
New +$7.21M ﹤0.01% 2376
2022
Q1 		– Sell
-51,000
Closed -$8.65M – 6850
2021
Q4 		$8.65M Sell
51,000
-14,000
-22% -$2.6M ﹤0.01% 2305
2021
Q3 		$12.3M Sell
65,000
-35,000
-35% -$6.57M 0.01% 1806
2021
Q2 		$17M Buy
100,000
+50,000
+100% +$7.32M 0.01% 1355
2021
Q1 		$7.06M Buy
50,000
+15,000
+43% +$2.26M 0.01% 2182
2020
Q4 		$4.55M Sell
35,000
-70,000
-67% -$9.35M ﹤0.01% 2541
2020
Q3 		$15.3K Buy
+105,000
New +$14.9M 0.02% 952
2013
Q3 		– Sell
-20,400
Closed -$632K – 3270
2013
Q2 		$632K Buy
+20,400
New +$543K ﹤0.01% 2217

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.