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
301
$3.41M
302
$3.41M
303
$3.4M
304
$3.36M
305
$3.36M
306
$3.33M
307
$3.31M
308
$3.29M
309
$3.22M
310
$3.21M
311
$3.13M
312
$3.12M
313
$3.12M
314
$3.12M
315
$3.08M
316
$3.06M
317
$3.05M
318
$3.03M
319
$3.02M
320
$3.02M
321
$3M
322
$2.98M
323
$2.98M
324
$2.95M
325
$2.91M