ALNY icon

Alnylam Pharmaceuticals

817 hedge funds and large institutions have $59.2B invested in Alnylam Pharmaceuticals in 2025 Q3 according to their latest regulatory filings, with 224 funds opening new positions, 279 increasing their positions, 222 reducing their positions, and 49 closing their positions.

New
Increased
Maintained
Reduced
Closed

more first-time investments, than exits

New positions opened: | Existing positions closed:

more funds holding in top 10

Funds holding in top 10:

more capital invested

Capital invested by funds: $ → $

more funds holding

Funds holding:

26% more repeat investments, than reductions

Existing positions increased: 279 | Existing positions reduced: 222

2.27% less ownership

Funds ownership: 101.28%99.02% (-2.3%)

13% less call options, than puts

Call options by funds: $562M | Put options by funds: $649M

Holders
817
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
13
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$562M
Puts
$649M
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
OSAM
276
O'Shaughnessy Asset Management
Connecticut
$4.24M
Prudential Financial
277
Prudential Financial
New Jersey
$4.16M
MFAM
278
Motley Fool Asset Management
Virginia
$4.12M
AV
279
ASR Vermogensbeheer
Netherlands
$4.05M
GC
280
Guggenheim Capital
Illinois
$3.93M
NG
281
NWK Group
California
$3.89M
CFM
282
Catalyst Funds Management
Australia
$3.79M
GCM
283
Genus Capital Management
British Columbia, Canada
$3.77M
SCI
284
S&CO Inc
Massachusetts
$3.74M
LA
285
LBP AM
France
$3.73M
DJSG
286
D.J. St. Germain
Massachusetts
$3.72M
MIM
287
MetLife Investment Management
New Jersey
$3.64M
KRS
288
Kentucky Retirement Systems
Kentucky
$3.57M
WAM
289
Wolverine Asset Management
Illinois
$3.56M
PP
290
Prudential plc
United Kingdom
$3.51M
CAPTRUST Financial Advisors
291
CAPTRUST Financial Advisors
North Carolina
$3.5M
NW
292
NewEdge Wealth
Pennsylvania
$3.47M
SC
293
SummitTX Capital
Texas
$3.43M
CI Investments Inc
294
CI Investments Inc
Ontario, Canada
$3.29M
JPMIA
295
J.P. Marvel Investment Advisors
Massachusetts
$3.24M
ASN
296
Advisory Services Network
Georgia
$3.19M
TI
297
Tidal Investments
Wisconsin
$3.14M
CM
298
Capula Management
Cayman Islands
$3.14M
M&T Bank
299
M&T Bank
New York
$3.1M
WG
300
Winton Group
United Kingdom
$3.1M