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Biogen
BIIB

Overview Fund Activity

846 hedge funds and large institutions have $16.1B invested in Biogen in 2025 Q2 according to their latest regulatory filings, with 94 funds opening new positions, 336 increasing their positions, 257 reducing their positions, and 99 closing their positions.

Holders
846
Holders Change
-22
Holders Change %
-2.53%
% of All Funds
11.36%
Holding in Top 10
5
Holding in Top 10 Change
+3
Holding in Top 10 Change %
+150%
% of All Funds
0.07%
New
94
Increased
336
Reduced
257
Closed
99
Calls
$292M
Puts
$203M
Net Calls
+$88.9M
Net Calls Change
+$365M

Top Buyers

1
Point72 Asset Management
1
Point72 Asset Management
Connecticut
$481M
2
Norges Bank
2
Norges Bank
Norway
$284M
3
Alyeska Investment Group
3
Alyeska Investment Group
Illinois
$63.9M
4
Arrowstreet Capital
4
Arrowstreet Capital
Massachusetts
$78.4M
5
Fidelity Investments
5
Fidelity Investments
Massachusetts
$210M

Top Sellers

1
BlackRock
1
BlackRock
New York
$1.7B
2
T. Rowe Price Investment Management
2
T. Rowe Price Investment Management
Maryland
$175M
3
Amundi
3
Amundi
France
$77.2M
4
SG Americas Securities
4
SG Americas Securities
New York
$2.82M
5
Qube Research & Technologies (QRT)
5
Qube Research & Technologies (QRT)
United Kingdom
$93.4M
Name Market Value Shares Shares
Change 		Shares
Change %
QPBE
676
Quintet Private Bank (Europe)
Luxembourg
$32K 255 -672 -72%
WOSD
677
WFA of San Diego
California
$31.8K 253 +253 New
TLCM
678
Twin Lakes Capital Management
California
$31.4K 250 – –
NC
679
NewSquare Capital
Pennsylvania
$30.6K 244 +140 +135%
CWP
680
Concord Wealth Partners
Virginia
$28.6K 228 +114 +100%
RIL
681
Rothschild Investment LLC
Illinois
$28.1K 224 +88 +65%
PK
682
Pflug Koory
Nebraska
$26.9K 214 – –
BWL
683
Bogart Wealth LLC
Virginia
$26.2K 209 – –
SAM
684
Smartleaf Asset Management
Massachusetts
$25.5K 202 -125 -38%
HI
685
Harbour Investments
Wisconsin
$25.2K 201 +6 +3%
VFM
686
Vision Financial Markets
Connecticut
$25.1K 200 – –
MYIA
687
Mount Yale Investment Advisors
Colorado
$25.1K 200 +200 New
OWA
688
Opal Wealth Advisors
New York
$23.4K 186 -5 -3%
CAL
689
Capital Advisors Ltd
Ohio
$23K 180 -68 -27%
PWA
690
Principia Wealth Advisory
Texas
$23K 183 +13 +8%
MCM
691
MV Capital Management
Maryland
$22.6K 180 +111 +161%
RS
692
Rakuten Securities
Japan
$22.5K 179 +92 +106%
W
693
WealthCollab
Washington
$21.5K 171 +8 +5%
OAJ
694
Ogorek Anthony Joseph
New York
$21K 172 +106 +161%
PTC
695
Private Trust Company
Ohio
$20.8K 166 -63 -28%
CTC
696
Central Trust Company
Missouri
$20.5K 163 -40 -20%
TC
697
Trust Company
Kansas
$20.5K 163 – –
AWM
698
AllSquare Wealth Management
New York
$19.2K 153 – –
NS
699
NBC Securities
Alabama
$19K 154 -103 -40%
SWM
700
Spire Wealth Management
Virginia
$18.6K 148 -23 -13%
26 27
28
29 30