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
326
$3.95M
327
$3.93M
328
$3.89M
329
$3.88M
330
$3.88M
331
$3.81M
332
$3.81M
333
$3.79M
334
$3.78M
335
$3.78M
336
$3.78M
337
$3.74M
338
$3.71M
339
$3.67M
340
$3.62M
341
$3.62M
342
$3.6M
343
$3.59M
344
$3.53M
345
$3.53M
346
$3.48M
347
$3.46M
348
$3.43M
349
$3.4M
350
$3.25M