1,084 hedge funds and large institutions have $40.6B invested in Biogen in 2019 Q1 according to their latest regulatory filings, with 119 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 (-$11.6B)

24% less funds holding in top 10

Funds holding in top 10: 2922 (-7)

27% less first-time investments, than exits

New positions opened: 119 | Existing positions closed: 164

Holders
1,084
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
526
$1.23M
527
$1.22M
528
$1.21M
529
$1.21M
530
$1.21M
531
$1.2M
532
$1.2M
533
$1.19M
534
$1.18M
535
$1.18M
536
$1.16M
537
$1.16M
538
$1.15M
539
$1.15M
540
$1.14M
541
$1.13M
542
$1.13M
543
$1.09M
544
$1.07M
545
$1.07M
546
$1.06M
547
$1.06M
548
$1.06M
549
$1.05M
550
$1.05M