870 hedge funds and large institutions have $20.2B invested in Biogen in 2024 Q4 according to their latest regulatory filings, with 130 funds opening new positions, 298 increasing their positions, 321 reducing their positions, and 158 closing their positions.

New
Increased
Maintained
Reduced
Closed

more ownership

Funds ownership:

less repeat investments, than reductions

Existing positions increased: | Existing positions reduced:

less funds holding

Funds holding:

less call options, than puts

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

18% less first-time investments, than exits

New positions opened: 130 | Existing positions closed: 158

19% less capital invested

Capital invested by funds: $25.1B → $20.2B (-$4.83B)

38% less funds holding in top 10

Funds holding in top 10: 85 (-3)

Holders
870
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
5
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$310M
Puts
$356M
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
276
$2.59M
277
$2.52M
278
$2.51M
279
$2.49M
280
$2.48M
281
$2.46M
282
$2.42M
283
$2.4M
284
$2.4M
285
$2.38M
286
$2.37M
287
$2.34M
288
$2.33M
289
$2.32M
290
$2.29M
291
$2.28M
292
$2.28M
293
$2.22M
294
$2.22M
295
$2.22M
296
$2.21M
297
$2.16M
298
$2.15M
299
$2.13M
300
$2.12M