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
526
$1.06M
527
$1.05M
528
$1.03M
529
$1.01M
530
$1M
531
$988K
532
$981K
533
$979K
534
$979K
535
$970K
536
$968K
537
$963K
538
$959K
539
$954K
540
$953K
541
$945K
542
$942K
543
$937K
544
$931K
545
$931K
546
$924K
547
$924K
548
$921K
549
$917K
550
$914K