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
476
$1.39M
477
$1.38M
478
$1.38M
479
$1.38M
480
$1.38M
481
$1.35M
482
$1.34M
483
$1.33M
484
$1.32M
485
$1.32M
486
$1.31M
487
$1.3M
488
$1.3M
489
$1.29M
490
$1.28M
491
$1.28M
492
$1.28M
493
$1.28M
494
$1.28M
495
$1.27M
496
$1.27M
497
$1.26M
498
$1.25M
499
$1.25M
500
$1.23M