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Biogen
BIIB

Overview Fund Activity

646 hedge funds and large institutions have $47.5B invested in Biogen in 2013 Q2 according to their latest regulatory filings, with 646 funds opening new positions, increasing their positions, reducing their positions, and closing their positions.

Holders
646
Holders Change
+646
Holders Change %
–
% of All Funds
21.09%
Holding in Top 10
29
Holding in Top 10 Change
+29
Holding in Top 10 Change %
%
% of All Funds
0.95%
New
646
Increased
–
Reduced
–
Closed
–
Calls
$527M
Puts
$606M
Net Calls
-$78.9M
Net Calls Change
-$78.9M

Top Buyers

1
Fidelity Investments
1
Fidelity Investments
Massachusetts
$5.06B
2
Primecap Management
2
Primecap Management
California
$3.93B
3
Vanguard Group
3
Vanguard Group
Pennsylvania
$2.44B
4
T. Rowe Price Associates
4
T. Rowe Price Associates
Maryland
$2.36B
5
State Street
5
State Street
Massachusetts
$2.19B

Top Sellers

No sellers this quarter
Name Market Value Shares Shares
Change 		Shares
Change %
Fidelity Investments
1
Fidelity Investments
Massachusetts
$5.06B 23,528,529 +23,528,529 New
Primecap Management
2
Primecap Management
California
$3.93B 18,246,809 +18,246,809 New
Vanguard Group
3
Vanguard Group
Pennsylvania
$2.44B 11,348,173 +11,348,173 New
T. Rowe Price Associates
4
T. Rowe Price Associates
Maryland
$2.36B 10,948,117 +10,948,117 New
State Street
5
State Street
Massachusetts
$2.19B 10,169,353 +10,169,353 New
JPMorgan Chase & Co
6
JPMorgan Chase & Co
New York
$2.11B 9,788,042 +9,788,042 New
Capital Research Global Investors
7
Capital Research Global Investors
California
$1.96B 9,130,000 +9,130,000 New
ClearBridge Investments
8
ClearBridge Investments
New York
$1.78B 8,265,256 +8,265,256 New
Jennison Associates
9
Jennison Associates
New York
$1.37B 6,388,021 +6,388,021 New
BIT
10
BlackRock Institutional Trust
California
$1.36B 6,324,126 +6,324,126 New
Sands Capital Management
11
Sands Capital Management
Virginia
$983M 4,565,921 +4,565,921 New
MCM
12
Marsico Capital Management
Colorado
$860M 3,997,754 +3,997,754 New
Wellington Management Group
13
Wellington Management Group
Massachusetts
$763M 3,543,369 +3,543,369 New
Northern Trust
14
Northern Trust
Illinois
$720M 3,345,678 +3,345,678 New
Invesco
15
Invesco
Georgia
$704M 3,269,860 +3,269,860 New
BFA
16
BlackRock Fund Advisors
California
$681M 3,163,992 +3,163,992 New
Winslow Capital Management
17
Winslow Capital Management
Minnesota
$678M 3,149,179 +3,149,179 New
AllianceBernstein
18
AllianceBernstein
Tennessee
$643M 2,988,196 +2,988,196 New
TCIM
19
TIAA CREF Investment Management
New York
$643M 2,987,321 +2,987,321 New
Bank of New York Mellon
20
Bank of New York Mellon
New York
$605M 2,812,720 +2,812,720 New
Ameriprise
21
Ameriprise
Minnesota
$547M 2,544,106 +2,544,106 New
MC
22
Montag & Caldwell
Georgia
$547M 2,541,481 +2,541,481 New
UBS AM
23
UBS AM
Illinois
$479M 2,226,869 +2,226,869 New
Wells Fargo
24
Wells Fargo
California
$416M 1,932,775 +1,932,775 New
Norges Bank
25
Norges Bank
Norway
$398M 1,850,405 +1,850,405 New
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