776 hedge funds and large institutions have $66.1B invested in Biogen in 2014 Q1 according to their latest regulatory filings, with 95 funds opening new positions, 284 increasing their positions, 294 reducing their positions, and 46 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
776
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
33
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$893M
Puts
$1.2B
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
251
$9.3M
252
$9.28M
253
$9.26M
254
$8.99M
255
$8.83M
256
$8.83M
257
$8.66M
258
$8.61M
259
$8.47M
260
$8.19M
261
$8.09M
262
$8.04M
263
$8.01M
264
$7.97M
265
$7.92M
266
$7.83M
267
$7.65M
268
$7.6M
269
$7.46M
270
$7.34M
271
$7.27M
272
$7.26M
273
$7.22M
274
$7.15M
275
$7.12M