CM
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Caption Management’s Alnylam Pharmaceuticals ALNY Stock Holding History

Caption 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
Q1 		$3.31M Sell
10,000
-5,000
-33% -$1.7M 0.02% 657
2025
Q4 		$5.96M Hold
15,000
– – 0.04% 461
2025
Q3 		$6.84M Buy
15,000
+5,000
+50% +$2.04M 0.05% 388
2025
Q2 		$3.26M Sell
10,000
-27,000
-73% -$7.47M 0.04% 542
2025
Q1 		$9.99M Buy
37,000
+17,000
+85% +$4.37M 0.1% 208
2024
Q4 		$4.71M Buy
+20,000
New +$5.26M 0.04% 386
2024
Q3 		– Sell
-283,000
Closed -$68.8M – 1242
2024
Q2 		$68.8M Sell
283,000
-47,900
-14% -$7.56M 1.06% 15
2024
Q1 		$49.5M Buy
330,900
+266,900
+417% +$44.5M 0.75% 22
2023
Q4 		$12.3M Sell
64,000
-49,600
-44% -$8.45M 0.17% 154
2023
Q3 		$20.1M Hold
113,600
– – 0.31% 68
2023
Q2 		$21.6M Buy
113,600
+88,600
+354% +$17.6M 0.38% 52
2023
Q1 		$5.01M Hold
25,000
– – 0.1% 235
2022
Q4 		$5.94M Sell
25,000
-25,000
-50% -$5.33M 0.09% 263
2022
Q3 		$10M Sell
50,000
-337,500
-87% -$64.4M 0.14% 174
2022
Q2 		$56.5M Buy
387,500
+357,500
+1,192% +$50.7M 0.78% 12
2022
Q1 		$4.9M Sell
30,000
-81,500
-73% -$12.4M 0.06% 429
2021
Q4 		$18.9M Buy
111,500
+81,500
+272% +$15.1M 0.21% 106
2021
Q3 		$5.66M Sell
30,000
-112,100
-79% -$21M 0.06% 402
2021
Q2 		$24.1M Buy
142,100
+92,100
+184% +$13.5M 0.31% 54
2021
Q1 		$7.06M Sell
50,000
-182,000
-78% -$27.4M 0.15% 170
2020
Q4 		$30.2M Buy
232,000
+212,000
+1,060% +$28.3M 0.69% 20
2020
Q3 		$2.91M Buy
+20,000
New +$2.84M 0.07% 328
2019
Q3 		– Sell
-36,400
Closed -$2.64M – 687
2019
Q2 		$2.64M Buy
+36,400
New +$2.79M 0.13% 204

Other funds holding ALNY

Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
Capital World Investors
Capital World Investors Los Angeles, California $733B AUM 35.63% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Capital Research Global Investors
Capital Research Global Investors Los Angeles, California $645B AUM 30.41% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
JP Morgan Chase
JP Morgan Chase New York $1.56T AUM 27.86% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
T. Rowe Price Investment Management
T. Rowe Price Investment Management Baltimore, Maryland $145B AUM 22.78% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

Caption Management's ALNY Position: Q4 2024 in Review

Caption Management sold out of Alnylam Pharmaceuticals (ALNY) in Q4 2024, closing a stake of 8,405 shares — an estimated $2.21M sold.

Caption Management first reported a position in ALNY in Q3 2018 and held it in 13 quarters. The position peaked at $41.4M in Q2 2024. 593 funds tracked by Wall St. Rank hold ALNY as of Q4 2024.

  • Caption Management reported no remaining Alnylam Pharmaceuticals position as of Q4 2024 after selling out during the quarter.
  • Caption Management sold 8,405 Alnylam Pharmaceuticals shares in Q4 2024, an estimated $2.21M.
  • Caption Management first reported a position in Alnylam Pharmaceuticals in Q3 2018 and held it in 13 quarters.
  • Caption Management's Alnylam Pharmaceuticals position peaked at $41.4M in Q2 2024.
  • 593 funds tracked by Wall St. Rank held Alnylam Pharmaceuticals as of Q4 2024.

Based on Caption Management's 13F filing for Q4 2024, filed 14 Feb 2025.