A detailed history of Rock Springs Capital Management LP transactions in Alnylam Pharmaceuticals, Inc. stock. As of the latest transaction made, Rock Springs Capital Management LP holds 250,000 shares of ALNY stock, worth $61.2 Million. This represents 2.34% of its overall portfolio holdings.

Number of Shares
250,000
Previous 250,000 -0.0%
Holding current value
$61.2 Million
Previous $60.8 Million 13.2%
% of portfolio
2.34%
Previous 1.88%

Shares

22 transactions
Quarter Operation Price Per share shares change shares Held SEC Form
Q2 2024

Aug 14, 2024

BUY
$143.31 - $247.0 $859,860 - $1.48 Million
6,000 Added 2.46%
250,000 $60.8 Million
Q1 2024

May 15, 2024

BUY
$146.51 - $198.2 $1.32 Million - $1.78 Million
9,000 Added 3.83%
244,000 $36.5 Million
Q4 2023

Feb 14, 2024

SELL
$151.41 - $196.57 $6.74 Million - $8.75 Million
-44,500 Reduced 15.92%
235,000 $45 Million
Q3 2023

Nov 14, 2023

SELL
$170.77 - $211.65 $11.2 Million - $13.9 Million
-65,500 Reduced 18.99%
279,500 $49.5 Million
Q1 2023

May 15, 2023

BUY
$182.66 - $235.53 $2.28 Million - $2.94 Million
12,500 Added 3.76%
345,000 $69.1 Million
Q4 2021

Feb 14, 2022

BUY
$159.56 - $209.29 $3.43 Million - $4.5 Million
21,500 Added 6.91%
332,500 $56.4 Million
Q3 2021

Nov 15, 2021

BUY
$169.75 - $207.73 $1.87 Million - $2.29 Million
11,000 Added 3.67%
311,000 $58.7 Million
Q1 2021

May 17, 2021

SELL
$126.83 - $175.69 $4.44 Million - $6.15 Million
-35,000 Reduced 10.45%
300,000 $42.4 Million
Q4 2020

Feb 16, 2021

SELL
$122.97 - $147.0 $591,977 - $707,658
-4,814 Reduced 1.42%
335,000 $43.5 Million
Q3 2020

Nov 16, 2020

SELL
$121.19 - $165.49 $628,491 - $858,231
-5,186 Reduced 1.5%
339,814 $49.5 Million
Q2 2020

Aug 14, 2020

SELL
$104.21 - $156.44 $3.8 Million - $5.71 Million
-36,500 Reduced 9.57%
345,000 $51.1 Million
Q1 2020

May 15, 2020

BUY
$93.12 - $133.99 $1.63 Million - $2.34 Million
17,500 Added 4.81%
381,500 $41.5 Million
Q4 2019

Feb 14, 2020

BUY
$74.51 - $124.23 $2.5 Million - $4.16 Million
33,500 Added 10.14%
364,000 $41.9 Million
Q3 2019

Nov 14, 2019

BUY
$70.9 - $87.82 $198,520 - $245,895
2,800 Added 0.85%
330,500 $26.6 Million
Q2 2019

Aug 14, 2019

BUY
$65.86 - $92.79 $6.2 Million - $8.74 Million
94,200 Added 40.34%
327,700 $23.8 Million
Q1 2019

May 15, 2019

BUY
$72.76 - $93.45 $2.87 Million - $3.69 Million
39,500 Added 20.36%
233,500 $21.8 Million
Q4 2018

Feb 14, 2019

SELL
$62.67 - $88.33 $156,675 - $220,825
-2,500 Reduced 1.27%
194,000 $14.1 Million
Q3 2018

Nov 14, 2018

BUY
$87.52 - $122.67 $2.01 Million - $2.82 Million
23,000 Added 13.26%
196,500 $17.2 Million
Q2 2018

Aug 14, 2018

BUY
$88.31 - $107.8 $2.69 Million - $3.29 Million
30,500 Added 21.33%
173,500 $17.1 Million
Q1 2018

May 15, 2018

BUY
$115.92 - $148.54 $1.51 Million - $1.93 Million
13,000 Added 10.0%
143,000 $17 Million
Q4 2017

Feb 14, 2018

BUY
$114.49 - $139.98 $2.86 Million - $3.5 Million
25,000 Added 23.81%
130,000 $16.5 Million
Q3 2017

Nov 14, 2017

BUY
$72.53 - $118.27 $7.62 Million - $12.4 Million
105,000
105,000 $12.3 Million

Others Institutions Holding ALNY

About ALNYLAM PHARMACEUTICALS, INC.


  • Ticker ALNY
  • Exchange NASDAQ
  • Sector Healthcare
  • Industry Biotechnology
  • Shares Outstandng 123,028,000
  • Market Cap $30.1B
  • Description
  • Alnylam Pharmaceuticals, Inc., a biopharmaceutical company, focuses on discovering, developing, and commercializing novel therapeutics based on ribonucleic acid interference. The company's pipeline of investigational RNAi therapeutics focuses on genetic medicines, cardio-metabolic diseases, hepatic infectious diseases, and central nervous system...
More about ALNY
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