1,029 hedge funds and large institutions have $34.2B invested in Biogen in 2022 Q4 according to their latest regulatory filings, with 159 funds opening new positions, 323 increasing their positions, 362 reducing their positions, and 96 closing their positions.

New
Increased
Maintained
Reduced
Closed

more first-time investments, than exits

New positions opened: | Existing positions closed:

more funds holding in top 10

Funds holding in top 10:

more funds holding

Funds holding:

more ownership

Funds ownership:

4% more capital invested

Capital invested by funds: $32.8B → $34.2B (+$1.39B)

11% less repeat investments, than reductions

Existing positions increased: 323 | Existing positions reduced: 362

14% less call options, than puts

Call options by funds: $1.29B | Put options by funds: $1.51B

Holders
1,029
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
25
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$1.29B
Puts
$1.51B
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
776
$242K
777
$241K
778
$240K
779
$240K
780
$240K
781
$239K
782
$237K
783
$236K
784
$236K
785
$235K
786
$235K
787
$235K
788
$234K
789
$234K
790
$233K
791
$232K
792
$232K
793
$232K
794
$230K
795
$227K
796
$227K
797
$226K
798
$224K
799
$223K
800
$222K