991 hedge funds and large institutions have $50.9B invested in Biogen in 2017 Q2 according to their latest regulatory filings, with 79 funds opening new positions, 351 increasing their positions, 390 reducing their positions, and 96 closing their positions.

New
Increased
Maintained
Reduced
Closed

more ownership

Funds ownership:

less capital invested

Capital invested by funds: $ → $

less funds holding

Funds holding:

less repeat investments, than reductions

Existing positions increased: | Existing positions reduced:

15% less funds holding in top 10

Funds holding in top 10: 2723 (-4)

16% less call options, than puts

Call options by funds: $954M | Put options by funds: $1.14B

18% less first-time investments, than exits

New positions opened: 79 | Existing positions closed: 96

Holders
991
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
23
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$954M
Puts
$1.14B
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
576
$1.1M
577
$1.09M
578
$1.08M
579
$1.08M
580
$1.08M
581
$1.08M
582
$1.08M
583
$1.08M
584
$1.08M
585
$1.06M
586
$1.06M
587
$1.06M
588
$1.04M
589
$1.03M
590
$1.01M
591
$1M
592
$999K
593
$989K
594
$977K
595
$948K
596
$947K
597
$920K
598
$911K
599
$898K
600
$884K