1,102 hedge funds and large institutions have $43.4B invested in Biogen in 2021 Q2 according to their latest regulatory filings, with 135 funds opening new positions, 324 increasing their positions, 467 reducing their positions, and 110 closing their positions.

New
Increased
Maintained
Reduced
Closed

more funds holding in top 10

Funds holding in top 10:

more first-time investments, than exits

New positions opened: | Existing positions closed:

more capital invested

Capital invested by funds: $ → $

more funds holding

Funds holding:

0.17% less ownership

Funds ownership: 83.86%83.69% (-0.17%)

6% less call options, than puts

Call options by funds: $1.8B | Put options by funds: $1.91B

31% less repeat investments, than reductions

Existing positions increased: 324 | Existing positions reduced: 467

Holders
1,102
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
27
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$1.8B
Puts
$1.91B
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
576
$863K
577
$862K
578
$855K
579
$853K
580
$849K
581
$846K
582
$845K
583
$835K
584
$834K
585
$833K
586
$820K
587
$819K
588
$817K
589
$816K
590
$810K
591
$802K
592
$800K
593
$794K
594
$793K
595
$786K
596
$785K
597
$781K
598
$780K
599
$778K
600
$775K