996 hedge funds and large institutions have $34.8B invested in Biogen in 2023 Q1 according to their latest regulatory filings, with 88 funds opening new positions, 341 increasing their positions, 362 reducing their positions, and 101 closing their positions.

New
Increased
Maintained
Reduced
Closed

more call options, than puts

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

more ownership

Funds ownership:

more capital invested

Capital invested by funds: $ → $

less repeat investments, than reductions

Existing positions increased: | Existing positions reduced:

3% less funds holding

Funds holding: 1,027996 (-31)

13% less first-time investments, than exits

New positions opened: 88 | Existing positions closed: 101

21% less funds holding in top 10

Funds holding in top 10: 2419 (-5)

Holders
996
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
19
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$744M
Puts
$674M
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
276
$5M
277
$4.98M
278
$4.9M
279
$4.79M
280
$4.77M
281
$4.72M
282
$4.72M
283
$4.67M
284
$4.63M
285
$4.62M
286
$4.56M
287
$4.52M
288
$4.41M
289
$4.41M
290
$4.33M
291
$4.28M
292
$4.22M
293
$4.2M
294
$4.1M
295
$3.98M
296
$3.95M
297
$3.94M
298
$3.92M
299
$3.82M
300
$3.81M