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Alnylam Pharmaceuticals

785 hedge funds and large institutions have $42.5B invested in Alnylam Pharmaceuticals in 2026 Q1 according to their latest regulatory filings, with 102 funds opening new positions, 320 increasing their positions, 257 reducing their positions, and 153 closing their positions.

New
Increased
Maintained
Reduced
Closed

more call options, than puts

Call options by funds: $ | Put options by funds: $

more repeat investments, than reductions

Existing positions increased: | Existing positions reduced:

less ownership

Funds ownership:

less funds holding

Funds holding:

18% less capital invested

Capital invested by funds: $51.7B → $42.5B (-$9.26B)

25% less funds holding in top 10

Funds holding in top 10: 43 (-1)

33% less first-time investments, than exits

New positions opened: 102 | Existing positions closed: 153

Holders
785
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
3
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$450M
Puts
$205M
Net Calls
Net Calls Change

Top Buyers

1 +$1.17B
2 +$916M
3 +$546M
4
Two Sigma Investments
Two Sigma Investments
New York
+$468M
5
ClearBridge Investments
ClearBridge Investments
New York
+$258M

Top Sellers

1 -$1.87B
2 -$450M
3 -$448M
4
Invesco
Invesco
Georgia
-$297M
5
1832 Asset Management
1832 Asset Management
Ontario, Canada
-$175M
Name Holding Trade Value Shares
Change
Change in
Stake
KBC Group
226
KBC Group
Belgium
$6.79M
Thrivent Financial for Lutherans
227
Thrivent Financial for Lutherans
Minnesota
$6.77M
Cerity Partners
228
Cerity Partners
New York
$6.7M
OAM
229
Oppenheimer Asset Management
New York
$6.57M
PFSRSONJ
230
Police & Firemen's Retirement System of New Jersey
New Jersey
$6.5M
JF
231
Jump Financial
Illinois
$6.34M
Teacher Retirement System of Texas
232
Teacher Retirement System of Texas
Texas
$6.23M
Toronto Dominion Bank
233
Toronto Dominion Bank
Ontario, Canada
$6.15M
SCM
234
Silvant Capital Management
Georgia
$6.04M
LIP
235
Liontrust Investment Partners
United Kingdom
$6.03M
BCIM
236
British Columbia Investment Management
British Columbia, Canada
$6.02M
Public Sector Pension Investment Board (PSP Investments)
237
Public Sector Pension Investment Board (PSP Investments)
Quebec, Canada
$5.96M
HFS
238
Hantz Financial Services
Michigan
$5.85M
SC
239
Slow Capital
California
$5.78M
N
240
Natixis
France
$5.65M
PSC
241
Portman Square Capital
United Kingdom
$5.6M
Lazard Asset Management
242
Lazard Asset Management
New York
$5.39M
Macquarie Group
243
Macquarie Group
Australia
$5.31M
SMDAM
244
Sumitomo Mitsui DS Asset Management
Japan
$5.28M
IGAM
245
iA Global Asset Management
Quebec, Canada
$5.27M
MML Investors Services
246
MML Investors Services
Massachusetts
$5.12M
SCM
247
Shelton Capital Management
Colorado
$4.91M
PA
248
Profund Advisors
Maryland
$4.85M
EMPI
249
Elo Mutual Pension Insurance
Finland
$4.84M
Nomura Holdings
250
Nomura Holdings
Japan
$4.73M