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Biogen
BIIB

Overview Fund Activity

656 hedge funds and large institutions have $52.6B invested in Biogen in 2013 Q3 according to their latest regulatory filings, with 73 funds opening new positions, 227 increasing their positions, 253 reducing their positions, and 54 closing their positions.

Holders
656
Holders Change
+10
Holders Change %
+1.55%
% of All Funds
21.28%
Holding in Top 10
24
Holding in Top 10 Change
-5
Holding in Top 10 Change %
-17.24%
% of All Funds
0.78%
New
73
Increased
227
Reduced
253
Closed
54
Calls
$619M
Puts
$689M
Net Calls
-$69.9M
Net Calls Change
+$9.03M

Top Buyers

1
Fidelity Investments
1
Fidelity Investments
Massachusetts
$6.17B
2
Deutsche Bank
2
Deutsche Bank
Germany
$364M
3
O
3
OppenheimerFunds
New York
$271M
4
Invesco
4
Invesco
Georgia
$903M
5
BFA
5
BlackRock Fund Advisors
California
$874M

Top Sellers

1
MCM
1
Marsico Capital Management
Colorado
$693M
2
JPMorgan Chase & Co
2
JPMorgan Chase & Co
New York
$2.11B
3
Viking Global Investors
3
Viking Global Investors
Connecticut
$69.9M
4
AllianceBernstein
4
AllianceBernstein
Tennessee
$571M
5
Winslow Capital Management
5
Winslow Capital Management
Minnesota
$631M
Name Market Value Shares Shares
Change 		Shares
Change %
Fidelity Investments
1
Fidelity Investments
Massachusetts
$6.17B 25,640,507 +2,111,978 +9%
Primecap Management
2
Primecap Management
California
$4.33B 17,968,172 -278,637 -2%
Vanguard Group
3
Vanguard Group
Pennsylvania
$2.77B 11,517,882 +169,709 +1%
T. Rowe Price Associates
4
T. Rowe Price Associates
Maryland
$2.61B 10,827,196 -120,921 -1%
State Street
5
State Street
Massachusetts
$2.47B 10,258,778 +89,425 +0.9%
Capital Research Global Investors
6
Capital Research Global Investors
California
$2.13B 8,842,000 -288,000 -3%
JPMorgan Chase & Co
7
JPMorgan Chase & Co
New York
$2.11B 8,778,415 -1,009,627 -10%
ClearBridge Investments
8
ClearBridge Investments
New York
$1.98B 8,226,362 -38,894 -0.5%
Jennison Associates
9
Jennison Associates
New York
$1.54B 6,387,949 -72 -0%
BIT
10
BlackRock Institutional Trust
California
$1.49B 6,201,099 -123,027 -2%
Sands Capital Management
11
Sands Capital Management
Virginia
$1.12B 4,635,241 +69,320 +2%
Wellington Management Group
12
Wellington Management Group
Massachusetts
$907M 3,766,804 +223,435 +6%
Invesco
13
Invesco
Georgia
$903M 3,750,997 +481,137 +15%
BFA
14
BlackRock Fund Advisors
California
$874M 3,630,292 +466,300 +15%
Northern Trust
15
Northern Trust
Illinois
$774M 3,215,342 -130,336 -4%
TCIM
16
TIAA CREF Investment Management
New York
$752M 3,122,306 +134,985 +5%
Bank of New York Mellon
17
Bank of New York Mellon
New York
$735M 3,052,165 +239,445 +9%
MCM
18
Marsico Capital Management
Colorado
$693M 2,877,019 -1,120,735 -28%
Winslow Capital Management
19
Winslow Capital Management
Minnesota
$631M 2,621,575 -527,604 -17%
AllianceBernstein
20
AllianceBernstein
Tennessee
$571M 2,373,317 -614,879 -21%
Ameriprise
21
Ameriprise
Minnesota
$521M 2,161,970 -382,136 -15%
UBS AM
22
UBS AM
Illinois
$507M 2,106,546 -120,323 -5%
MC
23
Montag & Caldwell
Georgia
$502M 2,085,994 -455,487 -18%
Wells Fargo
24
Wells Fargo
California
$477M 1,979,560 +46,785 +2%
BG
25
BlackRock Group
United Kingdom
$456M 1,894,929 +156,294 +9%
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