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
301
$3.4M
302
$3.36M
303
$3.36M
304
$3.33M
305
$3.31M
306
$3.29M
307
$3.22M
308
$3.21M
309
$3.13M
310
$3.12M
311
$3.12M
312
$3.12M
313
$3.08M
314
$3.06M
315
$3.05M
316
$3.03M
317
$3.02M
318
$3.02M
319
$3M
320
$2.98M
321
$2.98M
322
$2.95M
323
$2.91M
324
$2.91M
325
$2.88M