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Alnylam Pharmaceuticals
ALNY

Overview Fund Activity

617 hedge funds and large institutions have $34.2B invested in Alnylam Pharmaceuticals in 2025 Q1 according to their latest regulatory filings, with 107 funds opening new positions, 236 increasing their positions, 197 reducing their positions, and 67 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
617
Holders Change
+32
Holders Change %
+5.47%
% of All Funds
8.38%
Holding in Top 10
10
Holding in Top 10 Change
+6
Holding in Top 10 Change %
+150%
% of All Funds
0.14%
New
107
Increased
236
Reduced
197
Closed
67
Calls
$274M
Puts
$238M
Net Calls
+$35.4M
Net Calls Change
+$6.38M

Top Buyers

1
Fidelity Investments
Fidelity Investments
Massachusetts
+$493M
2
Bank of America
Bank of America
North Carolina
+$174M
3
Invesco
Invesco
Georgia
+$95.9M
4
Vanguard Group
Vanguard Group
Pennsylvania
+$87.3M
5
Point72 Asset Management
Point72 Asset Management
Connecticut
+$81.2M

Top Sellers

1
Wellington Management Group
Wellington Management Group
Massachusetts
-$428M
2
Capital International Investors
Capital International Investors
California
-$334M
3
Baillie Gifford & Co
Baillie Gifford & Co
United Kingdom
-$103M
4
BlackRock
BlackRock
New York
-$88M
5
Corient Private Wealth
Corient Private Wealth
Florida
-$63.7M
Name Holding Trade Value Shares
Change 		Shares
Change %
GC
326
Gilbert & Cook
Iowa
$1.05M – – –
OPS
327
Orion Portfolio Solutions
Nebraska
$1.04M +$30.5K +113 +3%
BCI
328
Brinker Capital Investments
Pennsylvania
$1.04M +$30.5K +113 +3%
OSAM
329
O'Shaughnessy Asset Management
Connecticut
$1.03M +$97.2K +360 +10%
PHK
330
Point72 Hong Kong
Hong Kong
$1.02M +$1.02M +3,795 New
KRSITF
331
Kentucky Retirement Systems Insurance Trust Fund
Kentucky
$1.01M +$1.01M +3,746 New
BCV
332
Banque Cantonale Vaudoise
Switzerland
$1.01M +$1.01M +3,728 New
YIH
333
Y-Intercept (HK)
Hong Kong
$1M -$215K -796 -18%
PL
334
Perpetual Ltd
Australia
$1M -$1.41M -5,213 -58%
ETC
335
Exchange Traded Concepts
Oklahoma
$1M -$31.9K -118 -3%
Truist Financial
336
Truist Financial
North Carolina
$979K -$209K -774 -18%
RIM
337
Rakuten Investment Management
Japan
$955K +$955K +3,559 New
SFA
338
Sequoia Financial Advisors
Ohio
$917K +$26.7K +99 +3%
T
339
TOBAM
France
$909K -$2.27M -8,418 -71%
Walleye Trading
340
Walleye Trading
New York
$907K +$907K +3,360 New
SPAS
341
Spectrum Planning & Advisory Services
California
$907K – – –
OCM
342
Orion Capital Management
California
$902K – – –
SMH
343
Sanders Morris Harris
Texas
$895K – – –
GFM
344
GF Fund Management
China
$892K +$160K +594 +22%
Credit Agricole
345
Credit Agricole
France
$888K -$191K -706 -18%
LJHT
346
Laurie J. Hall Trustee
$878K – – –
BMSSC
347
B. Metzler seel. Sohn & Co
Germany
$873K -$12.4K -46 -1%
Mercer Global Advisors
348
Mercer Global Advisors
Colorado
$867K +$165K +610 +23%
SGI
349
Summit Global Investments
Utah
$849K +$849K +3,145 New
SSA
350
Schonfeld Strategic Advisors
New York
$832K -$33.5M -123,918 -98%
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