1,018 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, 389 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
1,018
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
551
$1.45M
552
$1.44M
553
$1.42M
554
$1.42M
555
$1.41M
556
$1.39M
557
$1.39M
558
$1.37M
559
$1.37M
560
$1.36M
561
$1.35M
562
$1.34M
563
$1.34M
564
$1.34M
565
$1.29M
566
$1.29M
567
$1.27M
568
$1.26M
569
$1.25M
570
$1.25M
571
$1.23M
572
$1.23M
573
$1.22M
574
$1.22M
575
$1.21M