944 hedge funds and large institutions have $27.8B invested in Biogen in 2024 Q1 according to their latest regulatory filings, with 102 funds opening new positions, 300 increasing their positions, 352 reducing their positions, and 144 closing their positions.

New
Increased
Maintained
Reduced
Closed

less 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: $33.5B → $27.8B (-$5.73B)

20% less funds holding in top 10

Funds holding in top 10: 108 (-2)

29% less first-time investments, than exits

New positions opened: 102 | Existing positions closed: 144

Holders
944
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
8
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$301M
Puts
$303M
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
276
$3.02M
277
$3M
278
$2.99M
279
$2.98M
280
$2.98M
281
$2.94M
282
$2.85M
283
$2.85M
284
$2.82M
285
$2.79M
286
$2.77M
287
$2.76M
288
$2.74M
289
$2.71M
290
$2.7M
291
$2.69M
292
$2.68M
293
$2.68M
294
$2.67M
295
$2.66M
296
$2.62M
297
$2.61M
298
$2.6M
299
$2.56M
300
$2.52M