1,006 hedge funds and large institutions have $36.1B invested in Biogen in 2023 Q2 according to their latest regulatory filings, with 97 funds opening new positions, 320 increasing their positions, 363 reducing their positions, and 84 closing their positions.

New
Increased
Maintained
Reduced
Closed

more first-time investments, than exits

New positions opened: | Existing positions closed:

more capital invested

Capital invested by funds: $ → $

more funds holding

Funds holding:

less ownership

Funds ownership:

7% less call options, than puts

Call options by funds: $555M | Put options by funds: $599M

5% less funds holding in top 10

Funds holding in top 10: 1918 (-1)

12% less repeat investments, than reductions

Existing positions increased: 320 | Existing positions reduced: 363

Holders
1,006
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
18
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$555M
Puts
$599M
Net Calls
Net Calls Change

Top Buyers

1 +$1.01B
2 +$264M
3 +$181M
4
Alyeska Investment Group
Alyeska Investment Group
Illinois
+$109M
5
JP Morgan Chase
JP Morgan Chase
New York
+$108M

Top Sellers

1 -$668M
2 -$286M
3 -$157M
4
D.E. Shaw & Co
D.E. Shaw & Co
New York
-$145M
5
Millennium Management
Millennium Management
New York
-$140M
Name Holding Trade Value Shares
Change
Change in
Stake
776
$220K
777
$219K
778
$217K
779
$217K
780
$215K
781
$214K
782
$214K
783
$213K
784
$212K
785
$211K
786
$211K
787
$211K
788
$211K
789
$210K
790
$208K
791
$208K
792
$207K
793
$207K
794
$206K
795
$205K
796
$205K
797
$204K
798
$203K
799
$203K
800
$203K