922 hedge funds and large institutions have $58.4B invested in Biogen in 2015 Q3 according to their latest regulatory filings, with 105 funds opening new positions, 406 increasing their positions, 283 reducing their positions, and 150 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
922
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
37
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$1.22B
Puts
$1.8B
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
376
$4.41M
377
$4.41M
378
$4.38M
379
$4.31M
380
$4.29M
381
$4.25M
382
$4.23M
383
$4.22M
384
$4.21M
385
$4.2M
386
$4.16M
387
$4.08M
388
$4.07M
389
$4.04M
390
$4.03M
391
$4M
392
$3.97M
393
$3.94M
394
$3.94M
395
$3.9M
396
$3.89M
397
$3.85M
398
$3.84M
399
$3.82M
400
$3.79M