1,058 hedge funds and large institutions have $36.3B invested in Biogen in 2020 Q2 according to their latest regulatory filings, with 96 funds opening new positions, 339 increasing their positions, 437 reducing their positions, and 130 closing their positions.

New
Increased
Maintained
Reduced
Closed

less ownership

Funds ownership:

less funds holding

Funds holding:

less capital invested

Capital invested by funds: $ → $

less repeat investments, than reductions

Existing positions increased: | Existing positions reduced:

26% less first-time investments, than exits

New positions opened: 96 | Existing positions closed: 130

37% less call options, than puts

Call options by funds: $894M | Put options by funds: $1.43B

57% less funds holding in top 10

Funds holding in top 10: 4921 (-28)

Holders
1,058
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
21
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$894M
Puts
$1.43B
Net Calls
Net Calls Change

Top Buyers

1 +$204M
2 +$170M
3 +$159M
4
D.E. Shaw & Co
D.E. Shaw & Co
New York
+$128M
5
AL
AJO LP
Pennsylvania
+$102M
Name Holding Trade Value Shares
Change
Change in
Stake
276
$6.29M
277
$6.23M
278
$6.15M
279
$6.13M
280
$6.13M
281
$6.07M
282
$5.88M
283
$5.68M
284
$5.68M
285
$5.64M
286
$5.58M
287
$5.55M
288
$5.53M
289
$5.44M
290
$5.42M
291
$5.39M
292
$5.31M
293
$5.27M
294
$5.23M
295
$5.17M
296
$5.16M
297
$5.15M
298
$5.14M
299
$4.99M
300
$4.9M