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Biogen

993 hedge funds and large institutions have $33.5B invested in Biogen in 2023 Q4 according to their latest regulatory filings, with 132 funds opening new positions, 283 increasing their positions, 374 reducing their positions, and 81 closing their positions.

New
Increased
Maintained
Reduced
Closed

more first-time investments, than exits

New positions opened: | Existing positions closed:

more call options, than puts

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

more funds holding

Funds holding:

more ownership

Funds ownership:

5% more capital invested

Capital invested by funds: $32B → $33.5B (+$1.52B)

24% less repeat investments, than reductions

Existing positions increased: 283 | Existing positions reduced: 374

29% less funds holding in top 10

Funds holding in top 10: 1410 (-4)

Holders
993
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
10
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$643M
Puts
$499M
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
176
$10.5M
177
$10.5M
178
$10.4M
179
$10.3M
180
$10.3M
181
$10.2M
182
$9.99M
183
$9.97M
184
$9.61M
185
$9.38M
186
$9.31M
187
$9.1M
188
$9.02M
189
$8.98M
190
$8.92M
191
$8.89M
192
$8.85M
193
$8.85M
194
$8.82M
195
$8.77M
196
$8.4M
197
$8.26M
198
$8.21M
199
$8.08M
200
$8.04M