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
426
$2.24M
427
$2.23M
428
$2.23M
429
$2.19M
430
$2.18M
431
$2.17M
432
$2.15M
433
$2.09M
434
$2.09M
435
$2.08M
436
$2.05M
437
$2M
438
$1.98M
439
$1.97M
440
$1.94M
441
$1.94M
442
$1.94M
443
$1.93M
444
$1.92M
445
$1.88M
446
$1.85M
447
$1.83M
448
$1.83M
449
$1.83M
450
$1.82M