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969 hedge funds and large institutions have $58.9B invested in Biogen in 2015 Q4 according to their latest regulatory filings, with 139 funds opening new positions, 331 increasing their positions, 372 reducing their positions, and 82 closing their positions.

New
Increased
Maintained
Reduced
Closed

70% more first-time investments, than exits

New positions opened: 139 | Existing positions closed: 82

5% more funds holding

Funds holding: 923969 (+46)

1% more capital invested

Capital invested by funds: $58.4B → $58.9B (+$503M)

0% more funds holding in top 10

Funds holding in top 10: 3737 (0)

11% less repeat investments, than reductions

Existing positions increased: 331 | Existing positions reduced: 372

24% less call options, than puts

Call options by funds: $1.24B | Put options by funds: $1.63B

Holders
969
Holders Change
+46
Holders Change %
+4.98%
% of All Funds
25.43%
Holding in Top 10
37
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
0.97%
New
139
Increased
331
Reduced
372
Closed
82
Calls
$1.24B
Puts
$1.63B
Net Calls
-$397M
Net Calls Change
+$181M
Name Holding Trade Value Shares
Change
Change in
Stake
Primecap Management
1
Primecap Management
California
$4.84B -$9.44M -32,835 -0.2%
Vanguard Group
2
Vanguard Group
Pennsylvania
$4.05B -$100M -349,032 -3%
Fidelity Investments
3
Fidelity Investments
Massachusetts
$3.96B -$1.05B -3,637,805 -22%
State Street
4
State Street
Massachusetts
$2.9B -$6.9M -24,010 -0.3%
ClearBridge Investments
5
ClearBridge Investments
New York
$2.63B -$3.94M -13,716 -0.2%
T. Rowe Price Associates
6
T. Rowe Price Associates
Maryland
$1.95B +$95.8M +333,346 +6%
BIT
7
BlackRock Institutional Trust
California
$1.81B -$60.5M -210,476 -3%
Wellington Management Group
8
Wellington Management Group
Massachusetts
$1.62B -$110M -383,653 -7%
BFA
9
BlackRock Fund Advisors
California
$1.58B -$55.3M -192,578 -4%
JP Morgan Chase
10
JP Morgan Chase
New York
$1.32B +$103M +357,790 +9%
Ameriprise
11
Ameriprise
Minnesota
$1.22B +$53.7M +186,764 +5%
Jennison Associates
12
Jennison Associates
New York
$1.04B -$195M -678,458 -17%
Sands Capital Management
13
Sands Capital Management
Virginia
$1.03B -$217M -753,869 -18%
Invesco
14
Invesco
Georgia
$1B -$46.2M -160,773 -5%
Northern Trust
15
Northern Trust
Illinois
$927M -$41.3M -143,733 -5%
JSP
16
Jackson Square Partners
California
$874M +$150M +522,771 +26%
AllianceBernstein
17
AllianceBernstein
Tennessee
$866M +$90.8M +316,083 +13%
Bank of New York Mellon
18
Bank of New York Mellon
New York
$865M -$112M -388,643 -12%
BG
19
BlackRock Group
United Kingdom
$659M -$17.6M -61,261 -3%
Franklin Resources
20
Franklin Resources
California
$648M -$74.5M -259,337 -11%
D.E. Shaw & Co
21
D.E. Shaw & Co
New York
$641M +$429M +1,494,231 +250%
Norges Bank
22
Norges Bank
Norway
$596M -$8.35M -29,055 -1%
Geode Capital Management
23
Geode Capital Management
Massachusetts
$587M -$9.43M -32,829 -2%
O
24
OppenheimerFunds
New York
$518M +$2.69M +9,353 +0.6%
TCIM
25
TIAA CREF Investment Management
New York
$509M -$87.7M -305,310 -16%