1,101 hedge funds and large institutions have $45B invested in Biogen in 2019 Q4 according to their latest regulatory filings, with 203 funds opening new positions, 272 increasing their positions, 470 reducing their positions, and 69 closing their positions.

New
Increased
Maintained
Reduced
Closed

more first-time investments, than exits

New positions opened: | Existing positions closed:

more funds holding in top 10

Funds holding in top 10:

more capital invested

Capital invested by funds: $ → $

more funds holding

Funds holding:

2.67% less ownership

Funds ownership: 86.84%84.17% (-2.7%)

30% less call options, than puts

Call options by funds: $1.27B | Put options by funds: $1.82B

42% less repeat investments, than reductions

Existing positions increased: 272 | Existing positions reduced: 470

Holders
1,101
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
31
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$1.27B
Puts
$1.82B
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
426
$2.43M
427
$2.38M
428
$2.37M
429
$2.37M
430
$2.37M
431
$2.33M
432
$2.32M
433
$2.28M
434
$2.23M
435
$2.23M
436
$2.23M
437
$2.22M
438
$2.19M
439
$2.18M
440
$2.18M
441
$2.16M
442
$2.15M
443
$2.11M
444
$2.09M
445
$2.09M
446
$2.08M
447
$2.08M
448
$2.08M
449
$2.08M
450
$2.08M