1,091 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, 408 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: 83.85%83.72% (-0.12%)

13% less repeat investments, than reductions

Existing positions increased: 357 | Existing positions reduced: 408

Holders
1,091
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
551
$914K
552
$906K
553
$900K
554
$897K
555
$892K
556
$876K
557
$874K
558
$867K
559
$867K
560
$863K
561
$843K
562
$836K
563
$833K
564
$824K
565
$812K
566
$808K
567
$806K
568
$803K
569
$801K
570
$800K
571
$785K
572
$779K
573
$775K
574
$774K
575
$772K