1,059 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, 289 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: $37.2B → $31.7B (-$5.44B)

33% less repeat investments, than reductions

Existing positions increased: 289 | Existing positions reduced: 431

61% less funds holding in top 10

Funds holding in top 10: 187 (-11)

Holders
1,059
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 -$309M
2 -$269M
3 -$201M
4
State Street
State Street
Massachusetts
-$137M
5
Vanguard Group
Vanguard Group
Pennsylvania
-$116M
Name Holding Trade Value Shares
Change
Change in
Stake
526
$1.01M
527
$995K
528
$991K
529
$985K
530
$979K
531
$978K
532
$976K
533
$973K
534
$970K
535
$970K
536
$969K
537
$968K
538
$961K
539
$955K
540
$951K
541
$941K
542
$929K
543
$921K
544
$918K
545
$908K
546
$903K
547
$895K
548
$894K
549
$894K
550
$892K