1,100 hedge funds and large institutions have $51.4B invested in Biogen in 2018 Q1 according to their latest regulatory filings, with 94 funds opening new positions, 424 increasing their positions, 416 reducing their positions, and 101 closing their positions.

New
Increased
Maintained
Reduced
Closed

more repeat investments, than reductions

Existing positions increased: | Existing positions reduced:

less ownership

Funds ownership:

less first-time investments, than exits

New positions opened: | Existing positions closed:

less funds holding

Funds holding:

7% less funds holding in top 10

Funds holding in top 10: 2826 (-2)

14% less capital invested

Capital invested by funds: $60B → $51.4B (-$8.57B)

34% less call options, than puts

Call options by funds: $695M | Put options by funds: $1.05B

Holders
1,100
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
26
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$695M
Puts
$1.05B
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
951
$131K
952
$130K
953
$129K
954
$129K
955
$118K
956
$116K
957
$114K
958
$114K
959
$114K
960
$110K
961
$110K
962
$110K
963
$110K
964
$109K
965
$109K
966
$108K
967
$108K
968
$105K
969
$105K
970
$103K
971
$99K
972
$98K
973
$97K
974
$96K
975
$95K