969 hedge funds and large institutions have $58.9B invested in Biogen in 2015 Q4 according to their latest regulatory filings, with 139 funds opening new positions, 331 increasing their positions, 372 reducing their positions, and 82 closing their positions.

New
Increased
Maintained
Reduced
Closed

more first-time investments, than exits

New positions opened: | Existing positions closed:

more funds holding

Funds holding:

more capital invested

Capital invested by funds: $ → $

more funds holding in top 10

Funds holding in top 10:

11% less repeat investments, than reductions

Existing positions increased: 331 | Existing positions reduced: 372

24% less call options, than puts

Call options by funds: $1.24B | Put options by funds: $1.63B

Holders
969
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
$1.24B
Puts
$1.63B
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
426
$3.28M
427
$3.25M
428
$3.21M
429
$3.21M
430
$3.19M
431
$3.17M
432
$3.15M
433
$3.14M
434
$3.13M
435
$3.13M
436
$3.08M
437
$3.07M
438
$3.06M
439
$3.06M
440
$3.02M
441
$3.01M
442
$2.99M
443
$2.99M
444
$2.98M
445
$2.96M
446
$2.95M
447
$2.94M
448
$2.92M
449
$2.91M
450
$2.87M