1,090 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, 407 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: 83.83%83.71% (-0.12%)

12% less repeat investments, than reductions

Existing positions increased: 357 | Existing positions reduced: 407

Holders
1,090
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
351
$3.22M
352
$3.19M
353
$3.16M
354
$3.15M
355
$3.11M
356
$3.11M
357
$3.02M
358
$3.01M
359
$2.98M
360
$2.89M
361
$2.89M
362
$2.86M
363
$2.82M
364
$2.81M
365
$2.8M
366
$2.79M
367
$2.77M
368
$2.73M
369
$2.7M
370
$2.65M
371
$2.6M
372
$2.57M
373
$2.57M
374
$2.57M
375
$2.57M