965 hedge funds and large institutions have $90B invested in Biogen in 2015 Q1 according to their latest regulatory filings, with 132 funds opening new positions, 336 increasing their positions, 371 reducing their positions, and 42 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:

9% less repeat investments, than reductions

Existing positions increased: 336 | Existing positions reduced: 371

35% less call options, than puts

Call options by funds: $1.06B | Put options by funds: $1.64B

Holders
965
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
68
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$1.06B
Puts
$1.64B
Net Calls
Net Calls Change

Top Buyers

1 +$951M
2 +$438M
3 +$393M
4
D.E. Shaw & Co
D.E. Shaw & Co
New York
+$301M
5
IC
Institutional Capital
Illinois
+$279M

Top Sellers

1 -$585M
2 -$474M
3 -$258M
4
Goldman Sachs
Goldman Sachs
New York
-$227M
5
Jennison Associates
Jennison Associates
New York
-$221M
Name Holding Trade Value Shares
Change
Change in
Stake
526
$2.08M
527
$2.08M
528
$2.08M
529
$2.07M
530
$2.06M
531
$2.03M
532
$2.02M
533
$2.02M
534
$1.96M
535
$1.95M
536
$1.94M
537
$1.94M
538
$1.93M
539
$1.92M
540
$1.91M
541
$1.91M
542
$1.9M
543
$1.9M
544
$1.88M
545
$1.84M
546
$1.83M
547
$1.81M
548
$1.8M
549
$1.79M
550
$1.79M