Sei Investments CO Alnylam Pharmaceuticals, Inc. Transaction History

Sei Investments CO

  • $89.6 Billion
  • Q3 2025

A detailed history of Sei Investments CO transactions in Alnylam Pharmaceuticals, Inc. stock. As of the latest transaction made, Sei Investments CO holds 94,481 shares of ALNY stock, worth $42.4 Million. This represents 0.05% of its overall portfolio holdings.

Number of Shares
94,481
Previous 308,619 69.39%
Holding current value
$42.4 Million
Previous $101 Million 57.19%
% of portfolio
0.05%
Previous 0.12%

Shares

36 transactions
Quarter Operation Price Per share shares change shares Held SEC Form
Q3 2025

Nov 13, 2025
SELL
$311.12 - $482.13 $66.6 Million - $103 Million
-214,138 Reduced 69.39%
94,481 $43.1 Million
Q2 2025

Aug 14, 2025
BUY
$224.32 - $326.09 $7.01 Million - $10.2 Million
31,250 Added 11.27%
308,619 $101 Million
Q1 2025

May 14, 2025
BUY
$233.07 - $290.7 $2.07 Million - $2.58 Million
8,869 Added 3.3%
277,369 $74.9 Million
Q1 2025

May 13, 2025
BUY
$233.07 - $290.7 $582,675 - $726,750
2,500 Added 0.94%
268,500 $72.5 Million
Q4 2024

Feb 11, 2025
BUY
$232.27 - $300.43 $6.53 Million - $8.44 Million
28,093 Added 11.81%
266,000 $62.6 Million
Q3 2024

Nov 12, 2024
BUY
$233.81 - $287.01 $46.5 Million - $57 Million
198,729 Added 507.25%
237,907 $65.4 Million
Q2 2024

Aug 13, 2024
BUY
$143.31 - $247.0 $1.37 Million - $2.37 Million
9,575 Added 32.34%
39,178 $9.52 Million
Q1 2024

May 07, 2024
BUY
$146.51 - $198.2 $491,394 - $664,762
3,354 Added 12.78%
29,603 $4.42 Million
Q4 2023

Feb 14, 2024
BUY
$151.41 - $196.57 $143,385 - $186,151
947 Added 3.74%
26,249 $5.02 Million
Q3 2023

Nov 14, 2023
SELL
$170.77 - $211.65 $761,804 - $944,170
-4,461 Reduced 14.99%
25,302 $4.48 Million
Q2 2023

Aug 11, 2023
BUY
$185.01 - $212.05 $457,529 - $524,399
2,473 Added 9.06%
29,763 $5.65 Million
Q1 2023

May 12, 2023
SELL
$182.66 - $235.53 $62,469 - $80,551
-342 Reduced 1.24%
27,290 $5.47 Million
Q4 2022

Feb 10, 2023
SELL
$185.53 - $241.31 $136,735 - $177,845
-737 Reduced 2.6%
27,632 $6.57 Million
Q3 2022

Nov 14, 2022
BUY
$138.54 - $232.0 $290,102 - $485,808
2,094 Added 7.97%
28,369 $5.68 Million
Q2 2022

Aug 15, 2022
SELL
$120.42 - $169.29 $260,950 - $366,851
-2,167 Reduced 7.62%
26,275 $3.77 Million
Q1 2022

May 13, 2022
BUY
$127.18 - $173.91 $381,667 - $521,903
3,001 Added 11.8%
28,442 $4.59 Million
Q4 2021

Feb 14, 2022
BUY
$159.56 - $209.29 $220,033 - $288,610
1,379 Added 5.73%
25,441 $4.42 Million
Q3 2021

Nov 12, 2021
BUY
$169.75 - $207.73 $38,872 - $47,570
229 Added 0.96%
24,062 $4.61 Million
Q2 2021

Aug 06, 2021
BUY
$128.63 - $176.89 $594,013 - $816,878
4,618 Added 24.03%
23,833 $4.12 Million
Q1 2021

May 12, 2021
SELL
$126.83 - $175.69 $317,075 - $439,225
-2,500 Reduced 11.51%
19,215 $2.72 Million
Q4 2020

Feb 08, 2021
SELL
$122.97 - $147.0 $160,106 - $191,394
-1,302 Reduced 5.66%
21,715 $2.86 Million
Q3 2020

Dec 04, 2020
SELL
$121.19 - $165.49 $315,094 - $430,274
-2,600 Reduced 10.15%
23,017 $3.36 Million
Q3 2020

Nov 06, 2020
SELL
$121.19 - $165.49 $600,860 - $820,499
-4,958 Reduced 16.22%
25,617 $3.74 Million
Q2 2020

Aug 17, 2020
SELL
$104.21 - $156.44 $294,497 - $442,099
-2,826 Reduced 8.46%
30,575 $4.53 Million
Q2 2020

Aug 11, 2020
BUY
$104.21 - $156.44 $405,585 - $608,864
3,892 Added 13.19%
33,401 $3.98 Million
Q1 2020

May 14, 2020
SELL
$93.12 - $133.99 $63,135 - $90,845
-678 Reduced 2.25%
29,509 $3.21 Million
Q4 2019

Feb 06, 2020
SELL
$74.51 - $124.23 $3.47 Million - $5.79 Million
-46,616 Reduced 60.7%
30,187 $3.47 Million
Q3 2019

Nov 12, 2019
BUY
$70.9 - $87.82 $66,220 - $82,023
934 Added 1.23%
76,803 $6.13 Million
Q2 2019

Aug 14, 2019
BUY
$65.86 - $92.79 $1.34 Million - $1.88 Million
20,283 Added 36.49%
75,869 $5.48 Million
Q1 2019

May 15, 2019
BUY
$72.76 - $93.45 $959,849 - $1.23 Million
13,192 Added 31.12%
55,586 $5.18 Million
Q4 2018

Feb 13, 2019
BUY
$62.67 - $88.33 $18,424 - $25,969
294 Added 0.7%
42,394 $3.69 Million
Q3 2018

Nov 08, 2018
SELL
$87.52 - $122.67 $1.78 Million - $2.49 Million
-20,328 Reduced 32.56%
42,100 $3.68 Million
Q2 2018

Aug 03, 2018
BUY
$88.31 - $107.8 $2.65 Million - $3.23 Million
30,006 Added 92.55%
62,428 $6.15 Million
Q1 2018

May 11, 2018
SELL
$115.92 - $148.54 $1.94 Million - $2.49 Million
-16,754 Reduced 34.07%
32,422 $3.86 Million
Q4 2017

Feb 08, 2018
SELL
$114.49 - $139.98 $112,200 - $137,180
-980 Reduced 1.95%
49,176 $6.25 Million
Q3 2017

Nov 06, 2017
BUY
$72.53 - $118.27 $3.64 Million - $5.93 Million
50,156
50,156 $5.89 Million

Others Institutions Holding ALNY

# of Institutions
917
Shares Held
117M
Call Options Held
1.25M
Put Options Held
1.49M
View Full List

About ALNYLAM PHARMACEUTICALS, INC.

ALNY Quotes by TradingView
  • Ticker ALNY
  • Exchange NASDAQ
  • Sector Healthcare
  • Industry Biotechnology
  • Shares Outstandng 123,028,000
  • Market Cap $55.3B
  • 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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