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Alnylam Pharmaceuticals

818 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, 280 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 repeat investments, than reductions

Existing positions increased: | Existing positions reduced:

26% more funds holding

Funds holding: 650818 (+168)

2.26% less ownership

Funds ownership: 101.3%99.03% (-2.3%)

13% less call options, than puts

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

Holders
818
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
Commonwealth Equity Services
276
Commonwealth Equity Services
Massachusetts
$4.29M
OSAM
277
O'Shaughnessy Asset Management
Connecticut
$4.24M
Prudential Financial
278
Prudential Financial
New Jersey
$4.16M
MFAM
279
Motley Fool Asset Management
Virginia
$4.12M
AV
280
ASR Vermogensbeheer
Netherlands
$4.05M
GC
281
Guggenheim Capital
Illinois
$3.93M
NG
282
NWK Group
California
$3.89M
CFM
283
Catalyst Funds Management
Australia
$3.79M
GCM
284
Genus Capital Management
British Columbia, Canada
$3.77M
SCI
285
S&CO Inc
Massachusetts
$3.74M
LA
286
LBP AM
France
$3.73M
DJSG
287
D.J. St. Germain
Massachusetts
$3.72M
MIM
288
MetLife Investment Management
New Jersey
$3.64M
KRS
289
Kentucky Retirement Systems
Kentucky
$3.57M
WAM
290
Wolverine Asset Management
Illinois
$3.56M
PP
291
Prudential plc
United Kingdom
$3.51M
CAPTRUST Financial Advisors
292
CAPTRUST Financial Advisors
North Carolina
$3.5M
NW
293
NewEdge Wealth
Pennsylvania
$3.47M
SC
294
SummitTX Capital
Texas
$3.43M
CI Investments Inc
295
CI Investments Inc
Ontario, Canada
$3.29M
JPMIA
296
J.P. Marvel Investment Advisors
Massachusetts
$3.24M
ASN
297
Advisory Services Network
Georgia
$3.19M
TI
298
Tidal Investments
Wisconsin
$3.14M
CM
299
Capula Management
Cayman Islands
$3.14M
M&T Bank
300
M&T Bank
New York
$3.1M