1,004 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, 293 increasing their positions, 393 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: 293 | Existing positions reduced: 393

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
1,004
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
326
$2.88M
327
$2.82M
328
$2.76M
329
$2.74M
330
$2.71M
331
$2.7M
332
$2.67M
333
$2.66M
334
$2.63M
335
$2.63M
336
$2.61M
337
$2.49M
338
$2.45M
339
$2.45M
340
$2.44M
341
$2.42M
342
$2.42M
343
$2.41M
344
$2.4M
345
$2.38M
346
$2.36M
347
$2.35M
348
$2.34M
349
$2.34M
350
$2.33M