1,058 hedge funds and large institutions have $36.3B invested in Biogen in 2020 Q2 according to their latest regulatory filings, with 96 funds opening new positions, 339 increasing their positions, 437 reducing their positions, and 130 closing their positions.

New
Increased
Maintained
Reduced
Closed

less ownership

Funds ownership:

less funds holding

Funds holding:

less capital invested

Capital invested by funds: $ → $

less repeat investments, than reductions

Existing positions increased: | Existing positions reduced:

26% less first-time investments, than exits

New positions opened: 96 | Existing positions closed: 130

37% less call options, than puts

Call options by funds: $894M | Put options by funds: $1.43B

57% less funds holding in top 10

Funds holding in top 10: 4921 (-28)

Holders
1,058
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
21
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$894M
Puts
$1.43B
Net Calls
Net Calls Change

Top Buyers

1 +$204M
2 +$170M
3 +$159M
4
D.E. Shaw & Co
D.E. Shaw & Co
New York
+$128M
5
AL
AJO LP
Pennsylvania
+$102M
Name Holding Trade Value Shares
Change
Change in
Stake
476
$1.54M
477
$1.54M
478
$1.53M
479
$1.53M
480
$1.51M
481
$1.51M
482
$1.51M
483
$1.51M
484
$1.5M
485
$1.5M
486
$1.49M
487
$1.48M
488
$1.47M
489
$1.46M
490
$1.45M
491
$1.44M
492
$1.42M
493
$1.42M
494
$1.41M
495
$1.41M
496
$1.4M
497
$1.4M
498
$1.39M
499
$1.38M
500
$1.37M