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.

New
Increased
Maintained
Reduced
Closed
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

No buyers this quarter

Top Sellers

No sellers this quarter
Name Holding Trade Value Shares
Change
Shares
Change %
NI
201
Numeric Investors
Massachusetts
$10.8M +$10.8M +50,370 New
Jane Street
202
Jane Street
New York
$10.8M +$10.8M +50,288 New
ZCM
203
Ziegler Capital Management
Illinois
$10.8M +$10.8M +50,000 New
HSA
204
Hussman Strategic Advisors
Maryland
$10.8M +$10.8M +50,000 New
COPPSERS
205
Commonwealth of Pennsylvania Public School Employees Retirement System
Pennsylvania
$10.4M +$10.4M +48,335 New
WAM
206
World Asset Management
Michigan
$10.1M +$10.1M +47,099 New
DCM
207
Driehaus Capital Management
Illinois
$10.1M +$10.1M +47,041 New
MAM
208
Martingale Asset Management
Massachusetts
$10.1M +$10.1M +46,961 New
AIA
209
Avalon Investment & Advisory
Texas
$10.1M +$10.1M +46,884 New
PI
210
Placemark Investments
Illinois
$9.94M +$9.94M +46,171 New
RFC
211
Regions Financial Corp
Alabama
$9.91M +$9.91M +46,053 New
LBG
212
Lloyds Banking Group
United Kingdom
$9.73M +$9.73M +45,219 New
CGM
213
Capital Growth Management
Massachusetts
$9.68M +$9.68M +45,000 New
LMF
214
LMR Master Fund
Cayman Islands
$9.55M +$9.55M +44,380 New
Canada Pension Plan Investment Board
215
Canada Pension Plan Investment Board
Ontario, Canada
$9.39M +$9.39M +43,625 New
DL
216
Delta Lloyd
Netherlands
$9.36M +$9.36M +43,491 New
AG
217
Aperio Group
California
$9.32M +$9.32M +43,294 New
Robeco Institutional Asset Management
218
Robeco Institutional Asset Management
Netherlands
$9.31M +$9.31M +43,242 New
DBG
219
De Burlo Group
Massachusetts
$9.22M +$9.22M +42,850 New
FWCM
220
Ferguson Wellman Capital Management
Oregon
$9.21M +$9.21M +42,810 New
URS
221
Utah Retirement Systems
Utah
$9.19M +$9.19M +42,714 New
JIM
222
Jupiter Investment Management
United Kingdom
$8.95M +$8.95M +41,568 New
MCM
223
Mitchell Capital Management
Kansas
$8.64M +$8.64M +40,144 New
ICAP
224
Independence Capital Asset Partners
Colorado
$8.57M +$8.57M +39,837 New
Fidelity International
225
Fidelity International
Bermuda
$8.5M +$8.5M +39,488 New