1,090 hedge funds and large institutions have $35.6B invested in Biogen in 2021 Q1 according to their latest regulatory filings, with 140 funds opening new positions, 357 increasing their positions, 407 reducing their positions, and 99 closing their positions.

New
Increased
Maintained
Reduced
Closed

more funds holding in top 10

Funds holding in top 10:

more first-time investments, than exits

New positions opened: | Existing positions closed:

more capital invested

Capital invested by funds: $ → $

more funds holding

Funds holding:

5% more call options, than puts

Call options by funds: $1.45B | Put options by funds: $1.37B

0.12% less ownership

Funds ownership: 83.83%83.71% (-0.12%)

12% less repeat investments, than reductions

Existing positions increased: 357 | Existing positions reduced: 407

Holders
1,090
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
13
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$1.45B
Puts
$1.37B
Net Calls
Net Calls Change

Top Buyers

1 +$273M
2 +$262M
3 +$169M
4
ClearBridge Investments
ClearBridge Investments
New York
+$104M
5
A
AustralianSuper
Australia
+$103M

Top Sellers

1 -$308M
2 -$125M
3 -$117M
4
Marshall Wace
Marshall Wace
United Kingdom
-$100M
5
State Street
State Street
Massachusetts
-$89.4M
Name Holding Trade Value Shares
Change
Change in
Stake
501
$1.2M
502
$1.2M
503
$1.2M
504
$1.18M
505
$1.18M
506
$1.18M
507
$1.17M
508
$1.17M
509
$1.16M
510
$1.16M
511
$1.15M
512
$1.14M
513
$1.14M
514
$1.13M
515
$1.13M
516
$1.13M
517
$1.12M
518
$1.11M
519
$1.11M
520
$1.11M
521
$1.1M
522
$1.1M
523
$1.09M
524
$1.09M
525
$1.06M