1,019 hedge funds and large institutions have $51.5B invested in Biogen in 2017 Q1 according to their latest regulatory filings, with 90 funds opening new positions, 390 increasing their positions, 395 reducing their positions, and 83 closing their positions.

New
Increased
Maintained
Reduced
Closed

more first-time investments, than exits

New positions opened: | Existing positions closed:

more ownership

Funds ownership:

less funds holding

Funds holding:

less repeat investments, than reductions

Existing positions increased: | Existing positions reduced:

4% less capital invested

Capital invested by funds: $53.8B → $51.5B (-$2.28B)

25% less call options, than puts

Call options by funds: $808M | Put options by funds: $1.07B

34% less funds holding in top 10

Funds holding in top 10: 4127 (-14)

Holders
1,019
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
$808M
Puts
$1.07B
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
451
$2.73M
452
$2.68M
453
$2.66M
454
$2.66M
455
$2.65M
456
$2.63M
457
$2.62M
458
$2.55M
459
$2.54M
460
$2.53M
461
$2.52M
462
$2.51M
463
$2.5M
464
$2.46M
465
$2.46M
466
$2.44M
467
$2.41M
468
$2.39M
469
$2.39M
470
$2.39M
471
$2.35M
472
$2.35M
473
$2.34M
474
$2.32M
475
$2.29M