996 hedge funds and large institutions have $34.8B invested in Biogen in 2023 Q1 according to their latest regulatory filings, with 88 funds opening new positions, 341 increasing their positions, 362 reducing their positions, and 101 closing their positions.

New
Increased
Maintained
Reduced
Closed

more call options, than puts

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

more ownership

Funds ownership:

more capital invested

Capital invested by funds: $ → $

less repeat investments, than reductions

Existing positions increased: | Existing positions reduced:

3% less funds holding

Funds holding: 1,027996 (-31)

13% less first-time investments, than exits

New positions opened: 88 | Existing positions closed: 101

21% less funds holding in top 10

Funds holding in top 10: 2419 (-5)

Holders
996
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
19
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$744M
Puts
$674M
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
576
$554K
577
$552K
578
$552K
579
$549K
580
$531K
581
$527K
582
$526K
583
$525K
584
$521K
585
$520K
586
$514K
587
$514K
588
$502K
589
$501K
590
$499K
591
$498K
592
$497K
593
$495K
594
$494K
595
$494K
596
$490K
597
$488K
598
$488K
599
$485K
600
$480K