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
301
$8.13M
302
$8.05M
303
$8.02M
304
$7.95M
305
$7.87M
306
$7.76M
307
$7.72M
308
$7.7M
309
$7.6M
310
$7.59M
311
$7.49M
312
$7.49M
313
$7.44M
314
$7.43M
315
$7.39M
316
$7.37M
317
$7.37M
318
$7.33M
319
$7.33M
320
$7.2M
321
$6.97M
322
$6.97M
323
$6.97M
324
$6.97M
325
$6.94M