951 hedge funds and large institutions have $28B invested in Biogen in 2024 Q1 according to their latest regulatory filings, with 104 funds opening new positions, 302 increasing their positions, 354 reducing their positions, and 144 closing their positions.

New
Increased
Maintained
Reduced
Closed

more call options, than puts

Call options by funds: $ | Put options by funds: $

less ownership

Funds ownership:

less funds holding

Funds holding:

less repeat investments, than reductions

Existing positions increased: | Existing positions reduced:

17% less capital invested

Capital invested by funds: $33.7B → $28B (-$5.72B)

18% less funds holding in top 10

Funds holding in top 10: 119 (-2)

28% less first-time investments, than exits

New positions opened: 104 | Existing positions closed: 144

Holders
951
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
9
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$303M
Puts
$303M
Net Calls
Net Calls Change

Top Sellers

1 -$341M
2 -$151M
3 -$93.5M
4
Fidelity Investments
Fidelity Investments
Massachusetts
-$89.1M
5
JP Morgan Chase
JP Morgan Chase
New York
-$82.6M
Name Holding Trade Value Shares
Change
Change in
Stake
226
$5.26M
227
$5.21M
228
$5.2M
229
$5.2M
230
$5.04M
231
$5.01M
232
$4.91M
233
$4.9M
234
$4.9M
235
$4.88M
236
$4.88M
237
$4.8M
238
$4.78M
239
$4.61M
240
$4.57M
241
$4.57M
242
$4.54M
243
$4.54M
244
$4.51M
245
$4.5M
246
$4.49M
247
$4.44M
248
$4.39M
249
$4.31M
250
$4.27M