1,083 hedge funds and large institutions have $40.6B invested in Biogen in 2019 Q1 according to their latest regulatory filings, with 118 funds opening new positions, 389 increasing their positions, 437 reducing their positions, and 164 closing their positions.

New
Increased
Maintained
Reduced
Closed

more ownership

Funds ownership:

less funds holding

Funds holding:

less call options, than puts

Call options by funds: $ | Put options by funds: $

less repeat investments, than reductions

Existing positions increased: | Existing positions reduced:

22% less capital invested

Capital invested by funds: $52.2B → $40.6B (-$11.7B)

24% less funds holding in top 10

Funds holding in top 10: 2922 (-7)

28% less first-time investments, than exits

New positions opened: 118 | Existing positions closed: 164

Holders
1,083
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
22
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$1.15B
Puts
$1.28B
Net Calls
Net Calls Change

Top Buyers

1 +$250M
2 +$210M
3 +$206M
4
Boston Partners
Boston Partners
Massachusetts
+$177M
5
D.E. Shaw & Co
D.E. Shaw & Co
New York
+$154M

Top Sellers

1 -$382M
2 -$265M
3 -$208M
4
VOYA Investment Management
VOYA Investment Management
Georgia
-$192M
5
O
OrbiMed
New York
-$177M
Name Holding Trade Value Shares
Change
Change in
Stake
576
$911K
577
$896K
578
$888K
579
$886K
580
$881K
581
$874K
582
$859K
583
$855K
584
$846K
585
$839K
586
$838K
587
$835K
588
$827K
589
$823K
590
$822K
591
$815K
592
$814K
593
$807K
594
$805K
595
$788K
596
$769K
597
$769K
598
$765K
599
$751K
600
$745K