1,007 hedge funds and large institutions have $29.5B invested in Biogen in 2021 Q4 according to their latest regulatory filings, with 144 funds opening new positions, 294 increasing their positions, 394 reducing their positions, and 153 closing their positions.

New
Increased
Maintained
Reduced
Closed

more ownership

Funds ownership:

less first-time investments, than exits

New positions opened: | Existing positions closed:

less funds holding

Funds holding:

less capital invested

Capital invested by funds: $ → $

25% less repeat investments, than reductions

Existing positions increased: 294 | Existing positions reduced: 394

27% less funds holding in top 10

Funds holding in top 10: 1511 (-4)

28% less call options, than puts

Call options by funds: $1.1B | Put options by funds: $1.52B

Holders
1,007
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
11
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$1.1B
Puts
$1.52B
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
226
$7.09M
227
$7.09M
228
$7.08M
229
$7.08M
230
$7.04M
231
$7.03M
232
$6.97M
233
$6.9M
234
$6.67M
235
$6.61M
236
$6.61M
237
$6.59M
238
$6.52M
239
$6.49M
240
$6.43M
241
$6.37M
242
$6.3M
243
$6.23M
244
$6.2M
245
$6.13M
246
$6.01M
247
$6M
248
$5.88M
249
$5.88M
250
$5.78M