1,091 hedge funds and large institutions have $35.6B invested in Biogen in 2021 Q1 according to their latest regulatory filings, with 140 funds opening new positions, 357 increasing their positions, 408 reducing their positions, and 99 closing their positions.

New
Increased
Maintained
Reduced
Closed

more funds holding in top 10

Funds holding in top 10:

more first-time investments, than exits

New positions opened: | Existing positions closed:

more capital invested

Capital invested by funds: $ → $

more funds holding

Funds holding:

5% more call options, than puts

Call options by funds: $1.45B | Put options by funds: $1.37B

0.12% less ownership

Funds ownership: 83.85%83.72% (-0.12%)

13% less repeat investments, than reductions

Existing positions increased: 357 | Existing positions reduced: 408

Holders
1,091
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
13
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$1.45B
Puts
$1.37B
Net Calls
Net Calls Change

Top Buyers

1 +$273M
2 +$262M
3 +$169M
4
ClearBridge Investments
ClearBridge Investments
New York
+$104M
5
A
AustralianSuper
Australia
+$103M

Top Sellers

1 -$308M
2 -$125M
3 -$117M
4
Marshall Wace
Marshall Wace
United Kingdom
-$100M
5
State Street
State Street
Massachusetts
-$89.4M
Name Holding Trade Value Shares
Change
Change in
Stake
426
$1.9M
427
$1.9M
428
$1.88M
429
$1.86M
430
$1.82M
431
$1.81M
432
$1.8M
433
$1.79M
434
$1.79M
435
$1.78M
436
$1.78M
437
$1.77M
438
$1.76M
439
$1.75M
440
$1.75M
441
$1.75M
442
$1.74M
443
$1.74M
444
$1.73M
445
$1.73M
446
$1.73M
447
$1.68M
448
$1.67M
449
$1.66M
450
$1.65M