1,100 hedge funds and large institutions have $45B invested in Biogen in 2019 Q4 according to their latest regulatory filings, with 203 funds opening new positions, 272 increasing their positions, 469 reducing their positions, and 69 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 capital invested

Capital invested by funds: $ → $

more funds holding

Funds holding:

2.67% less ownership

Funds ownership: 86.83%84.16% (-2.7%)

30% less call options, than puts

Call options by funds: $1.27B | Put options by funds: $1.82B

42% less repeat investments, than reductions

Existing positions increased: 272 | Existing positions reduced: 469

Holders
1,100
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
31
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$1.27B
Puts
$1.82B
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
26
$329M
27
$325M
28
$302M
29
$277M
30
$264M
31
$255M
32
$248M
33
$248M
34
$225M
35
$211M
36
$197M
37
$192M
38
$191M
39
$189M
40
$188M
41
$187M
42
$175M
43
$173M
44
$161M
45
$158M
46
$155M
47
$154M
48
$144M
49
$143M
50
$141M