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1,104 hedge funds and large institutions have $43.5B invested in Biogen in 2021 Q2 according to their latest regulatory filings, with 136 funds opening new positions, 324 increasing their positions, 468 reducing their positions, and 110 closing their positions.

New
Increased
Maintained
Reduced
Closed

108% more funds holding in top 10

Funds holding in top 10: 1327 (+14)

24% more first-time investments, than exits

New positions opened: 136 | Existing positions closed: 110

22% more capital invested

Capital invested by funds: $35.7B → $43.5B (+$7.81B)

1% more funds holding

Funds holding: 1,0931,104 (+11)

0.17% less ownership

Funds ownership: 83.93%83.76% (-0.17%)

6% less call options, than puts

Call options by funds: $1.8B | Put options by funds: $1.91B

31% less repeat investments, than reductions

Existing positions increased: 324 | Existing positions reduced: 468

Holders
1,104
Holders Change
+11
Holders Change %
+1.01%
% of All Funds
19.22%
Holding in Top 10
27
Holding in Top 10 Change
+14
Holding in Top 10 Change %
+107.69%
% of All Funds
0.47%
New
136
Increased
324
Reduced
468
Closed
110
Calls
$1.8B
Puts
$1.91B
Net Calls
-$111M
Net Calls Change
-$185M
Name Holding Trade Value Shares
Change
Change in
Stake
FNBOSM
1101
First National Bank of South Miami
Florida
$1K +$1.21K +4 New
GFPC
1102
Global Financial Private Client
Florida
$698
ED
1103
Exane Derivatives
France
$352 -$2.73K -9 -90%
WA
1104
Waddell & Associates
Tennessee
$307 +$269K +887 New
Berkshire Hathaway
1105
Berkshire Hathaway
Nebraska
-$180M -643,022 Closed
SAM
1106
Southeastern Asset Management
Tennessee
-$169M -603,890 Closed
DM
1107
Deerfield Management
New York
-$86.7M -310,000 Closed
Jacobs Levy Equity Management
1108
Jacobs Levy Equity Management
New Jersey
-$47.7M -170,620 Closed
RG
1109
Redmile Group
California
-$45.6M -162,847 Closed
TAM
1110
Todd Asset Management
Kentucky
-$19.5M -69,793 Closed
Jennison Associates
1111
Jennison Associates
New York
-$18.4M -65,838 Closed
Simplex Trading
1112
Simplex Trading
Illinois
-$13.1M -43,137 Closed
SM
1113
SG3 Management
Puerto Rico
-$9.49M -31,330 Closed
Group One Trading
1114
Group One Trading
Illinois
-$7.91M -26,125 Closed
PI
1115
PGGM Investments
Netherlands
-$6.31M -22,570 Closed
CIM
1116
Contrarius Investment Management
Jersey
-$4.82M -17,224 Closed
AIM
1117
Aigen Investment Management
New York
-$4.28M -15,291 Closed
SAM
1118
Stansberry Asset Management
Texas
-$3.54M -12,663 Closed
EF
1119
Empowered Funds
Pennsylvania
-$2.73M -11,138 Closed
CA
1120
Capitolis Advisors
New York
-$2.6M -9,291 Closed
APF
1121
Alaska Permanent Fund
Alaska
-$2.29M -8,200 Closed
Fiera Capital (Canada)
1122
Fiera Capital (Canada)
Quebec, Canada
-$1.98M -7,081 Closed
FBC
1123
Fairfield, Bush & Co
Connecticut
-$1.96M -7,000 Closed
AAM
1124
Azzad Asset Management
Virginia
-$1.79M -6,411 Closed
MSE
1125
MUFG Securities EMEA
United Kingdom
-$1.79M -6,395 Closed