1,057 hedge funds and large institutions have $31.7B invested in Biogen in 2020 Q4 according to their latest regulatory filings, with 170 funds opening new positions, 287 increasing their positions, 431 reducing their positions, and 148 closing their positions.

New
Increased
Maintained
Reduced
Closed

more call options, than puts

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

more first-time investments, than exits

New positions opened: | Existing positions closed:

more ownership

Funds ownership:

more funds holding

Funds holding:

15% less capital invested

Capital invested by funds: $37.1B → $31.7B (-$5.44B)

33% less repeat investments, than reductions

Existing positions increased: 287 | Existing positions reduced: 431

61% less funds holding in top 10

Funds holding in top 10: 187 (-11)

Holders
1,057
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
7
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$1.98B
Puts
$1.64B
Net Calls
Net Calls Change

Top Sellers

1 -$289M
2 -$256M
3 -$191M
4
State Street
State Street
Massachusetts
-$130M
5
KBC Group
KBC Group
Belgium
-$114M
Name Holding Trade Value Shares
Change
Change in
Stake
426
$1.78M
427
$1.77M
428
$1.77M
429
$1.77M
430
$1.74M
431
$1.73M
432
$1.73M
433
$1.73M
434
$1.71M
435
$1.71M
436
$1.69M
437
$1.69M
438
$1.68M
439
$1.66M
440
$1.66M
441
$1.63M
442
$1.61M
443
$1.59M
444
$1.57M
445
$1.57M
446
$1.56M
447
$1.56M
448
$1.56M
449
$1.55M
450
$1.55M