1,100 hedge funds and large institutions have $51.4B invested in Biogen in 2018 Q1 according to their latest regulatory filings, with 94 funds opening new positions, 424 increasing their positions, 416 reducing their positions, and 101 closing their positions.

New
Increased
Maintained
Reduced
Closed

more repeat investments, than reductions

Existing positions increased: | Existing positions reduced:

less ownership

Funds ownership:

less first-time investments, than exits

New positions opened: | Existing positions closed:

less funds holding

Funds holding:

7% less funds holding in top 10

Funds holding in top 10: 2826 (-2)

14% less capital invested

Capital invested by funds: $60B → $51.4B (-$8.57B)

34% less call options, than puts

Call options by funds: $695M | Put options by funds: $1.05B

Holders
1,100
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
26
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$695M
Puts
$1.05B
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
476
$2.51M
477
$2.48M
478
$2.46M
479
$2.46M
480
$2.45M
481
$2.45M
482
$2.44M
483
$2.44M
484
$2.43M
485
$2.36M
486
$2.36M
487
$2.36M
488
$2.32M
489
$2.31M
490
$2.28M
491
$2.24M
492
$2.23M
493
$2.23M
494
$2.22M
495
$2.2M
496
$2.16M
497
$2.15M
498
$2.12M
499
$2.1M
500
$2.1M