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Alnylam Pharmaceuticals

781 hedge funds and large institutions have $42.4B invested in Alnylam Pharmaceuticals in 2026 Q1 according to their latest regulatory filings, with 103 funds opening new positions, 319 increasing their positions, 254 reducing their positions, and 154 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 → $42.4B (-$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: 103 | Existing positions closed: 154

Holders
781
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
II
201
IFM Investors
Australia
$9.02M
CUAMC
202
China Universal Asset Management Company
China
$9.02M
PHP
203
Parkman Healthcare Partners
Connecticut
$8.91M
UIM
204
USS Investment Management
United Kingdom
$8.88M
Corient Private Wealth
205
Corient Private Wealth
Florida
$8.5M
EI
206
EFG International
$8.46M
JFG
207
Jefferies Financial Group
New York
$8.45M
CII
208
Capital International Inc
California
$8.45M
Daiwa Securities Group
209
Daiwa Securities Group
Japan
$8.39M
USCWA
210
U.S. Capital Wealth Advisors
Texas
$8.12M
IMRF
211
Illinois Municipal Retirement Fund
Illinois
$8.04M
O
212
Ossiam
France
$8M
Creative Planning
213
Creative Planning
Kansas
$7.98M
VCM
214
Voleon Capital Management
California
$7.97M
ECSS
215
Eurizon Capital SGR SpA
$7.96M
SLAM
216
Swiss Life Asset Management
$7.85M
OAM
217
OP Asset Management
$7.77M
Citadel Advisors
218
Citadel Advisors
Florida
$7.75M
Cetera Investment Advisers
219
Cetera Investment Advisers
Illinois
$7.67M
IC
220
IEQ Capital
California
$7.57M
Mackenzie Financial
221
Mackenzie Financial
Ontario, Canada
$7.45M
VMPIC
222
Varma Mutual Pension Insurance Co
Finland
$6.98M
6CM
223
683 Capital Management
New York
$6.95M
URS
224
Utah Retirement Systems
Utah
$6.82M
KBC Group
225
KBC Group
Belgium
$6.79M