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
251
$5.71M
252
$5.71M
253
$5.7M
254
$5.61M
255
$5.61M
256
$5.52M
257
$5.46M
258
$5.31M
259
$5.3M
260
$5.2M
261
$5.15M
262
$5.06M
263
$5.04M
264
$5M
265
$4.85M
266
$4.85M
267
$4.81M
268
$4.8M
269
$4.8M
270
$4.75M
271
$4.69M
272
$4.68M
273
$4.65M
274
$4.65M
275
$4.55M