1,100 hedge funds and large institutions have $45B invested in Biogen in 2019 Q4 according to their latest regulatory filings, with 203 funds opening new positions, 272 increasing their positions, 469 reducing their positions, and 69 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:

2.67% less ownership

Funds ownership: 86.83%84.16% (-2.7%)

30% less call options, than puts

Call options by funds: $1.27B | Put options by funds: $1.82B

42% less repeat investments, than reductions

Existing positions increased: 272 | Existing positions reduced: 469

Holders
1,100
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
31
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$1.27B
Puts
$1.82B
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
251
$9.66M
252
$9.53M
253
$9.47M
254
$9.41M
255
$9.29M
256
$9.15M
257
$9.11M
258
$9.1M
259
$9.03M
260
$9.01M
261
$8.94M
262
$8.9M
263
$8.9M
264
$8.9M
265
$8.88M
266
$8.87M
267
$8.82M
268
$8.81M
269
$8.72M
270
$8.7M
271
$8.7M
272
$8.68M
273
$8.67M
274
$8.63M
275
$8.63M