Latest Institutional Purchases of Alnylam Pharmaceuticals, Inc. (ALNY)
This list provides information on the latest institutional transactions involving Alnylam Pharmaceuticals, Inc. (ALNY) stock that were buys. The list includes the name of the institution, the number of shares exchanged, the range of values for the transaction, and the number of shares held by the institution after the purchase has occurred.
| Report Date | Institution (Fund) | Operation | Option | Shares change | Value Range | Shares Held | Trade History |
|---|---|---|---|---|---|---|---|
|
Dec 01, 2025
Q3 2025
|
Groupama Asset Managment
Paris, I0 |
BUY
|
- |
2.48M+ 160.41% |
$773M - $1.2B
|
4.03M
$1.81B
|
|
|
Nov 07, 2025
Q3 2025
|
Jpmorgan Chase & CO
New York, NY |
BUY
|
- |
2.32M+ 104.78% |
$723M - $1.12B
|
4.54M
$2.04B
|
|
|
Nov 13, 2025
Q3 2025
|
Arrowstreet Capital, Limited Partnership
Boston, MA |
BUY
|
- |
1.19M+ 698.83% |
$369M - $572M
|
1.36M
$609M
|
|
|
Nov 13, 2025
Q3 2025
|
Jane Street Group, LLC
New York, NY |
BUY
|
- |
936K+ 4094.74% |
$291M - $451M
|
959K
$431M
|
|
|
Nov 14, 2025
Q3 2025
|
Qube Research & Technologies LTD
London, X0 |
BUY
|
- |
811KNew |
$252M - $391M
|
811K
$364M
|
|
|
Nov 14, 2025
Q3 2025
|
David A. Siegel
Two Sigma Advisers, LP | New York, Ny
|
BUY
|
- |
626K+ 235.4% |
$195M - $302M
|
893K
$401M
|
|
|
Nov 14, 2025
Q3 2025
|
Aqr Capital Management LLC
Greenwich, CT |
BUY
|
- |
556K+ 295.23% |
$173M - $268M
|
744K
$334M
|
|
|
Nov 14, 2025
Q3 2025
|
Israel Englander
Millennium Management LLC | New York, Ny
|
BUY
|
- |
459K+ 508.03% |
$143M - $222M
|
550K
$247M
|
|
|
Nov 17, 2025
Q3 2025
|
Jacobs Levy Equity Management, Inc
Florham Park, NJ |
BUY
|
- |
393K+ 2221.73% |
$122M - $189M
|
410K
$184M
|
|
|
Nov 14, 2025
Q3 2025
|
Susquehanna International Group, LLP
Bala Cynwyd, PA |
BUY
|
- |
369K+ 177.36% |
$115M - $178M
|
578K
$259M
|
|
|
Oct 29, 2025
Q3 2025
|
Massachusetts Financial Services CO
Boston, MA |
BUY
|
- |
357KNew |
$111M - $172M
|
357K
$160M
|
|
|
Nov 14, 2025
Q3 2025
|
Voloridge Investment Management, LLC
Jupiter, FL |
BUY
|
- |
349K+ 4532.64% |
$109M - $168M
|
357K
$160M
|
|
|
Nov 14, 2025
Q3 2025
|
Susquehanna Advisors Group, Inc.
Bala Cynwyd, PA |
BUY
|
- |
286KNew |
$89M - $138M
|
286K
$129M
|
|
|
Nov 14, 2025
Q3 2025
|
Susquehanna Advisors Group, Inc.
Bala Cynwyd, PA |
BUY
|
PUT |
276KNew |
$85.8M - $133M
|
276K
$124M
|
|
|
Nov 14, 2025
Q3 2025
|
Hrt Financial LP
New York, NY |
BUY
|
- |
274K+ 1529.39% |
$85.1M - $132M
|
291K
$131M
|
|
|
Nov 13, 2025
Q3 2025
|
Marshall Wace, LLP
London, X0 |
BUY
|
- |
270K+ 113.09% |
$83.9M - $130M
|
508K
$228M
|
|
|
Nov 07, 2025
Q3 2025
|
Vanguard Group Inc
Valley Forge, PA |
BUY
|
- |
268K+ 2.02% |
$83.5M - $129M
|
13.6M
$6.09B
|
|
|
Nov 14, 2025
Q3 2025
|
Two Sigma Investments, LP
New York, NY |
BUY
|
- |
253K+ 73.59% |
$78.6M - $122M
|
596K
$268M
|
|
|
Nov 14, 2025
Q3 2025
|
Bank Of America Corp
Charlotte, NC |
BUY
|
- |
241K+ 19.18% |
$75M - $116M
|
1.5M
$673M
|
|
|
Nov 14, 2025
Q3 2025
|
1832 Asset Management L.P.
Toronto, A6 |
BUY
|
- |
236K+ 105.67% |
$73.4M - $114M
|
459K
$206M
|
|
|
Nov 03, 2025
Q3 2025
|
Federated Hermes, Inc.
Pittsburgh, PA |
BUY
|
- |
226K+ 69.87% |
$70.4M - $109M
|
550K
$247M
|
|
|
Nov 14, 2025
Q3 2025
|
Bank Of America Corp
Charlotte, NC |
BUY
|
PUT |
200KNew |
$62.2M - $96.4M
|
200K
$89.8M
|
|
|
Oct 09, 2025
Q3 2025
|
Voya Investment Management LLC
Atlanta, GA |
BUY
|
- |
162K+ 76.91% |
$50.5M - $78.3M
|
373K
$168M
|
|
|
Nov 14, 2025
Q3 2025
|
Susquehanna International Group, LLP
Bala Cynwyd, PA |
BUY
|
PUT |
160K+ 92.45% |
$49.9M - $77.3M
|
334K
$150M
|
|
|
Nov 14, 2025
Q3 2025
|
Squarepoint Ops LLC
New York, NY |
BUY
|
- |
143K+ 5851.14% |
$44.5M - $69M
|
146K
$65.4M
|
|
|
Nov 13, 2025
Q3 2025
|
Invesco Ltd.
Atlanta, GA |
BUY
|
- |
140K+ 10.45% |
$43.6M - $67.6M
|
1.48M
$666M
|
|
|
Oct 10, 2025
Q3 2025
|
Congress Asset Management CO
|
BUY
|
- |
119KNew |
$37M - $57.3M
|
119K
$53.4M
|
|
|
Nov 13, 2025
Q3 2025
|
Franklin Resources Inc
San Mateo, CA |
BUY
|
- |
113K+ 18.74% |
$35.1M - $54.3M
|
714K
$321M
|
|
|
Nov 14, 2025
Q3 2025
|
Raymond James Financial Inc
St. Petersburg, FL |
BUY
|
- |
107K+ 39.51% |
$33.2M - $51.5M
|
377K
$169M
|
|
|
Nov 14, 2025
Q3 2025
|
Worldquant Millennium Advisors LLC
New York, NY |
BUY
|
- |
103K+ 87.98% |
$32.1M - $49.8M
|
221K
$99.1M
|
|
|
Nov 13, 2025
Q3 2025
|
Russell Investments Group, Ltd.
|
BUY
|
- |
102K+ 109.68% |
$31.9M - $49.4M
|
196K
$88M
|
|
|
Nov 13, 2025
Q3 2025
|
Canada Pension Plan Investment Board
Toronto Ontario, A6 |
BUY
|
- |
101K+ 283.81% |
$31.4M - $48.6M
|
136K
$61.2M
|
|
|
Nov 12, 2025
Q3 2025
|
Geode Capital Management, LLC
Boston, MA |
BUY
|
- |
100K+ 4.19% |
$31.3M - $48.4M
|
2.5M
$1.12B
|
|
|
Nov 14, 2025
Q3 2025
|
Farallon Capital Management LLC
San Francisco, CA |
BUY
|
PUT |
100KNew |
$31.1M - $48.2M
|
100K
$44.9M
|
|
|
Oct 20, 2025
Q3 2025
|
Los Angeles Capital Management LLC
|
BUY
|
- |
92K+ 136.49% |
$28.6M - $44.4M
|
159K
$71.6M
|
|
|
Nov 14, 2025
Q3 2025
|
D. E. Shaw & Co., Inc.
New York, NY |
BUY
|
- |
91.1K+ 84.17% |
$28.4M - $43.9M
|
199K
$89.6M
|
|
|
Nov 13, 2025
Q3 2025
|
Korea Investment Corp
Seoul, M5 |
BUY
|
- |
86.1K+ 77.63% |
$26.8M - $41.5M
|
197K
$88.4M
|
|
|
Nov 14, 2025
Q3 2025
|
Aquatic Capital Management LLC
Chicago, IL |
BUY
|
- |
84.1KNew |
$26.2M - $40.5M
|
84.1K
$37.8M
|
|
|
Nov 13, 2025
Q3 2025
|
Lord, Abbett & Co. LLC
Jersey City, NJ |
BUY
|
- |
67.2KNew |
$20.9M - $32.4M
|
67.2K
$30.2M
|
|
|
Nov 13, 2025
Q3 2025
|
Clearbridge Investments, LLC
New York, NY |
BUY
|
- |
65.3K+ 11.73% |
$20.3M - $31.5M
|
622K
$280M
|
|
|
Nov 14, 2025
Q3 2025
|
Man Group PLC
London, X0 |
BUY
|
- |
63.6K+ 783.87% |
$19.8M - $30.6M
|
71.7K
$32.2M
|
|
|
Oct 07, 2025
Q3 2025
|
Assenagon Asset Management S.A.
|
BUY
|
- |
62.7K+ 354.49% |
$19.5M - $30.2M
|
80.4K
$36.1M
|
|
|
Nov 14, 2025
Q3 2025
|
Axa Investment Managers S.A.
Puteaux, I0 |
BUY
|
- |
61.7KNew |
$19.2M - $29.7M
|
61.7K
$27.7M
|
|
|
Nov 14, 2025
Q3 2025
|
Jain Global LLC
New York, NY |
BUY
|
- |
61.3K+ 366.5% |
$19.1M - $29.6M
|
78K
$35.1M
|
|
|
Nov 14, 2025
Q3 2025
|
Ieq Capital, LLC
|
BUY
|
- |
56.1K+ 915.63% |
$17.4M - $27M
|
62.2K
$27.9M
|
|
|
Nov 13, 2025
Q3 2025
|
Macquarie Group LTD
Australia, C3 |
BUY
|
- |
48.2K+ 8.04% |
$15M - $23.3M
|
648K
$291M
|
|
|
Nov 13, 2025
Q3 2025
|
Quadrature Capital LTD
London, X0 |
BUY
|
- |
47K+ 2492.47% |
$14.6M - $22.7M
|
48.9K
$22M
|
|
|
Nov 10, 2025
Q3 2025
|
Charles Schwab Investment Management Inc
San Francisco, CA |
BUY
|
- |
47K+ 8.22% |
$14.6M - $22.7M
|
619K
$278M
|
|
|
Nov 12, 2025
Q3 2025
|
Handelsbanken Fonder Ab
|
BUY
|
- |
38.7K+ 33.15% |
$12M - $18.7M
|
155K
$69.8M
|
|
|
Nov 04, 2025
Q3 2025
|
Bronte Capital Management Pty Ltd.
|
BUY
|
- |
35KNew |
$10.9M - $16.9M
|
35K
$15.7M
|
|