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
351
$7.51M
352
$7.5M
353
$7.45M
354
$7.41M
355
$7.39M
356
$7.38M
357
$7.38M
358
$7.37M
359
$7.3M
360
$7.21M
361
$7.2M
362
$7.19M
363
$7.14M
364
$7.05M
365
$6.8M
366
$6.72M
367
$6.71M
368
$6.67M
369
$6.26M
370
$6.17M
371
$6.12M
372
$6.1M
373
$5.89M
374
$5.85M
375
$5.81M