1,009 hedge funds and large institutions have $37.6B invested in Biogen in 2019 Q2 according to their latest regulatory filings, with 84 funds opening new positions, 316 increasing their positions, 451 reducing their positions, and 142 closing their positions.

New
Increased
Maintained
Reduced
Closed

less ownership

Funds ownership:

less funds holding

Funds holding:

less capital invested

Capital invested by funds: $ → $

less call options, than puts

Call options by funds: $ | Put options by funds: $

27% less funds holding in top 10

Funds holding in top 10: 2216 (-6)

30% less repeat investments, than reductions

Existing positions increased: 316 | Existing positions reduced: 451

41% less first-time investments, than exits

New positions opened: 84 | Existing positions closed: 142

Holders
1,009
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
16
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$883M
Puts
$1.2B
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
226
$10.6M
227
$10.6M
228
$9.98M
229
$9.94M
230
$9.87M
231
$9.77M
232
$9.72M
233
$9.66M
234
$9.47M
235
$9.45M
236
$9.44M
237
$9.4M
238
$9.38M
239
$9.35M
240
$9.17M
241
$9.14M
242
$9.13M
243
$8.95M
244
$8.74M
245
$8.73M
246
$8.71M
247
$8.69M
248
$8.67M
249
$8.62M
250
$8.62M