999 hedge funds and large institutions have $34.9B invested in Biogen in 2023 Q1 according to their latest regulatory filings, with 89 funds opening new positions, 341 increasing their positions, 363 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: 1,029999 (-30)

12% less first-time investments, than exits

New positions opened: 89 | Existing positions closed: 101

24% less funds holding in top 10

Funds holding in top 10: 2519 (-6)

Holders
999
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
$748M
Puts
$674M
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
251
$6.71M
252
$6.65M
253
$6.64M
254
$6.2M
255
$6.1M
256
$6.08M
257
$5.97M
258
$5.95M
259
$5.95M
260
$5.91M
261
$5.7M
262
$5.56M
263
$5.53M
264
$5.5M
265
$5.47M
266
$5.46M
267
$5.4M
268
$5.37M
269
$5.25M
270
$5.25M
271
$5.19M
272
$5.11M
273
$5.06M
274
$5.04M
275
$5.01M