1,140 hedge funds and large institutions have $52.2B invested in Biogen in 2018 Q4 according to their latest regulatory filings, with 130 funds opening new positions, 374 increasing their positions, 452 reducing their positions, and 122 closing their positions.

New
Increased
Maintained
Reduced
Closed

more funds holding in top 10

Funds holding in top 10:

more first-time investments, than exits

New positions opened: | Existing positions closed:

less funds holding

Funds holding:

less ownership

Funds ownership:

17% less capital invested

Capital invested by funds: $62.8B → $52.2B (-$10.5B)

17% less repeat investments, than reductions

Existing positions increased: 374 | Existing positions reduced: 452

26% less call options, than puts

Call options by funds: $992M | Put options by funds: $1.34B

Holders
1,140
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
29
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$992M
Puts
$1.34B
Net Calls
Net Calls Change

Top Sellers

1 -$196M
2 -$177M
3 -$150M
4
Invesco
Invesco
Georgia
-$145M
5
Goldman Sachs
Goldman Sachs
New York
-$139M
Name Holding Trade Value Shares
Change
Change in
Stake
376
$4.8M
377
$4.64M
378
$4.59M
379
$4.56M
380
$4.52M
381
$4.47M
382
$4.42M
383
$4.42M
384
$4.41M
385
$4.41M
386
$4.35M
387
$4.35M
388
$4.35M
389
$4.33M
390
$4.33M
391
$4.31M
392
$4.29M
393
$4.28M
394
$4.27M
395
$4.23M
396
$4.23M
397
$4.21M
398
$4.2M
399
$4.18M
400
$4.15M