1,006 hedge funds and large institutions have $36.1B invested in Biogen in 2023 Q2 according to their latest regulatory filings, with 97 funds opening new positions, 320 increasing their positions, 363 reducing their positions, and 84 closing their positions.

New
Increased
Maintained
Reduced
Closed

more first-time investments, than exits

New positions opened: | Existing positions closed:

more capital invested

Capital invested by funds: $ → $

more funds holding

Funds holding:

less ownership

Funds ownership:

7% less call options, than puts

Call options by funds: $555M | Put options by funds: $599M

5% less funds holding in top 10

Funds holding in top 10: 1918 (-1)

12% less repeat investments, than reductions

Existing positions increased: 320 | Existing positions reduced: 363

Holders
1,006
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
18
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$555M
Puts
$599M
Net Calls
Net Calls Change

Top Buyers

1 +$1.01B
2 +$264M
3 +$181M
4
Alyeska Investment Group
Alyeska Investment Group
Illinois
+$109M
5
JP Morgan Chase
JP Morgan Chase
New York
+$108M

Top Sellers

1 -$668M
2 -$286M
3 -$157M
4
D.E. Shaw & Co
D.E. Shaw & Co
New York
-$145M
5
Millennium Management
Millennium Management
New York
-$140M
Name Holding Trade Value Shares
Change
Change in
Stake
251
$6.85M
252
$6.8M
253
$6.79M
254
$6.76M
255
$6.71M
256
$6.66M
257
$6.55M
258
$6.3M
259
$6.21M
260
$6.11M
261
$6.04M
262
$5.83M
263
$5.72M
264
$5.7M
265
$5.68M
266
$5.65M
267
$5.58M
268
$5.57M
269
$5.49M
270
$5.32M
271
$5.31M
272
$5.19M
273
$5.14M
274
$5.13M
275
$5.13M