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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.

New
Increased
Maintained
Reduced
Closed

35% more first-time investments, than exits

New positions opened: 73 | Existing positions closed: 54

11% more capital invested

Capital invested by funds: $47.5B → $52.6B (+$5.11B)

2% more funds holding

Funds holding: 646656 (+10)

10% less call options, than puts

Call options by funds: $619M | Put options by funds: $689M

10% less repeat investments, than reductions

Existing positions increased: 227 | Existing positions reduced: 253

17% less funds holding in top 10

Funds holding in top 10: 2924 (-5)

Holders
656
Holders Change
+10
Holders Change %
+1.55%
% of All Funds
21.27%
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
Name Holding Trade Value Shares
Change
Change in
Stake
Fidelity Investments
1
Fidelity Investments
Massachusetts
$6.17B +$473M +2,111,978 +9%
Primecap Management
2
Primecap Management
California
$4.33B -$62.4M -278,637 -2%
Vanguard Group
3
Vanguard Group
Pennsylvania
$2.77B +$38M +169,709 +1%
T. Rowe Price Associates
4
T. Rowe Price Associates
Maryland
$2.61B -$27.1M -120,921 -1%
State Street
5
State Street
Massachusetts
$2.47B +$20M +89,425 +0.9%
Capital Research Global Investors
6
Capital Research Global Investors
California
$2.13B -$64.5M -288,000 -3%
JP Morgan Chase
7
JP Morgan Chase
New York
$2.11B -$226M -1,009,627 -10%
ClearBridge Investments
8
ClearBridge Investments
New York
$1.98B -$8.7M -38,894 -0.5%
Jennison Associates
9
Jennison Associates
New York
$1.54B -$16.1K -72 -0%
BIT
10
BlackRock Institutional Trust
California
$1.49B -$27.5M -123,027 -2%
Sands Capital Management
11
Sands Capital Management
Virginia
$1.12B +$15.5M +69,320 +2%
Wellington Management Group
12
Wellington Management Group
Massachusetts
$907M +$50M +223,435 +6%
Invesco
13
Invesco
Georgia
$903M +$108M +481,137 +15%
BFA
14
BlackRock Fund Advisors
California
$874M +$104M +466,300 +15%
Northern Trust
15
Northern Trust
Illinois
$774M -$29.2M -130,336 -4%
TCIM
16
TIAA CREF Investment Management
New York
$752M +$30.2M +134,985 +5%
Bank of New York Mellon
17
Bank of New York Mellon
New York
$735M +$53.6M +239,445 +9%
MCM
18
Marsico Capital Management
Colorado
$693M -$251M -1,120,735 -28%
Winslow Capital Management
19
Winslow Capital Management
Minnesota
$631M -$118M -527,604 -17%
AllianceBernstein
20
AllianceBernstein
Tennessee
$571M -$138M -614,879 -21%
Ameriprise
21
Ameriprise
Minnesota
$521M -$85.5M -382,136 -15%
UBS AM
22
UBS AM
Illinois
$507M -$26.9M -120,323 -5%
MC
23
Montag & Caldwell
Georgia
$502M -$102M -455,487 -18%
Wells Fargo
24
Wells Fargo
California
$477M +$10.5M +46,785 +2%
BG
25
BlackRock Group
United Kingdom
$456M +$35M +156,294 +9%