994 hedge funds and large institutions have $33.5B invested in Biogen in 2023 Q4 according to their latest regulatory filings, with 133 funds opening new positions, 283 increasing their positions, 374 reducing their positions, and 81 closing their positions.

New
Increased
Maintained
Reduced
Closed

more first-time investments, than exits

New positions opened: | Existing positions closed:

more call options, than puts

Call options by funds: $ | Put options by funds: $

more funds holding

Funds holding:

more ownership

Funds ownership:

5% more capital invested

Capital invested by funds: $32B → $33.5B (+$1.52B)

24% less repeat investments, than reductions

Existing positions increased: 283 | Existing positions reduced: 374

29% less funds holding in top 10

Funds holding in top 10: 1410 (-4)

Holders
994
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
10
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$643M
Puts
$499M
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
926
$8.54K
927
$8.54K
928
$8.02K
929
$8K
930
$7.76K
931
$7.76K
932
$7.76K
933
$7.76K
934
$7.76K
935
$7.71K
936
$7.25K
937
$7K
938
$7K
939
$6.21K
940
$6.21K
941
$5.95K
942
$5.95K
943
$5.94K
944
$5.69K
945
$5.23K
946
$5.21K
947
$5.17K
948
$5.17K
949
$4.4K
950
$4.4K