1,058 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, 288 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 (-$5.45B)

33% less repeat investments, than reductions

Existing positions increased: 288 | Existing positions reduced: 431

61% less funds holding in top 10

Funds holding in top 10: 187 (-11)

Holders
1,058
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
401
$2.12M
402
$2.09M
403
$2.08M
404
$2.07M
405
$2.07M
406
$2.04M
407
$2.03M
408
$2.03M
409
$2.01M
410
$2.01M
411
$1.99M
412
$1.97M
413
$1.96M
414
$1.94M
415
$1.93M
416
$1.92M
417
$1.9M
418
$1.85M
419
$1.85M
420
$1.84M
421
$1.82M
422
$1.82M
423
$1.81M
424
$1.8M
425
$1.79M