1,037 hedge funds and large institutions have $34.9B invested in Biogen in 2021 Q3 according to their latest regulatory filings, with 72 funds opening new positions, 350 increasing their positions, 397 reducing their positions, and 124 closing their positions.

New
Increased
Maintained
Reduced
Closed

less ownership

Funds ownership:

less funds holding

Funds holding:

less repeat investments, than reductions

Existing positions increased: | Existing positions reduced:

less capital invested

Capital invested by funds: $ → $

27% less call options, than puts

Call options by funds: $1.24B | Put options by funds: $1.7B

42% less first-time investments, than exits

New positions opened: 72 | Existing positions closed: 124

44% less funds holding in top 10

Funds holding in top 10: 2715 (-12)

Holders
1,037
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
15
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$1.24B
Puts
$1.7B
Net Calls
Net Calls Change

Top Buyers

1 +$226M
2 +$136M
3 +$131M
4
JP Morgan Chase
JP Morgan Chase
New York
+$82.1M
5
Amundi
Amundi
France
+$77.1M

Top Sellers

1 -$210M
2 -$135M
3 -$115M
4
Renaissance Technologies
Renaissance Technologies
New York
-$114M
5
Northern Trust
Northern Trust
Illinois
-$101M
Name Holding Trade Value Shares
Change
Change in
Stake
376
$2.46M
377
$2.46M
378
$2.46M
379
$2.44M
380
$2.43M
381
$2.43M
382
$2.39M
383
$2.38M
384
$2.36M
385
$2.34M
386
$2.33M
387
$2.3M
388
$2.29M
389
$2.28M
390
$2.28M
391
$2.25M
392
$2.24M
393
$2.24M
394
$2.21M
395
$2.19M
396
$2.17M
397
$2.17M
398
$2.13M
399
$2.13M
400
$2.12M