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Boston Scientific
BSX

Overview Fund Activity

1,653 hedge funds and large institutions have $143B invested in Boston Scientific in 2025 Q2 according to their latest regulatory filings, with 151 funds opening new positions, 739 increasing their positions, 537 reducing their positions, and 86 closing their positions.

Holders
1,653
Holders Change
+33
Holders Change %
+2.04%
% of All Funds
22.2%
Holding in Top 10
39
Holding in Top 10 Change
-11
Holding in Top 10 Change %
-22%
% of All Funds
0.52%
New
151
Increased
739
Reduced
537
Closed
86
Calls
$863M
Puts
$692M
Net Calls
+$171M
Net Calls Change
-$85.1M

Top Buyers

1
Norges Bank
1
Norges Bank
Norway
$2.09B
2
Edgewood Management
2
Edgewood Management
Connecticut
$747M
3
BlackRock
3
BlackRock
New York
$15.8B
4
VOYA Investment Management
4
VOYA Investment Management
Georgia
$939M
5
D.E. Shaw & Co
5
D.E. Shaw & Co
New York
$726M

Top Sellers

1
Fidelity Investments
1
Fidelity Investments
Massachusetts
$11.6B
2
JPMorgan Chase & Co
2
JPMorgan Chase & Co
New York
$2.76B
3
Massachusetts Financial Services
3
Massachusetts Financial Services
Massachusetts
$1.38B
4
Millennium Management
4
Millennium Management
New York
$444M
5
Winslow Capital Management
5
Winslow Capital Management
Minnesota
$1.14M
Name Market Value Shares Shares
Change 		Shares
Change %
TIM
1651
Total Investment Management
Arizona
$967 9 +9 New
WOC
1652
West Oak Capital
California
$349 325 – –
RJA
1653
Ross\Johnson & Associates
Minnesota
$322 3 – –
Alyeska Investment Group
1654
Alyeska Investment Group
Illinois
– – -1,202,779 Closed
CF
1655
Corebridge Financial
Texas
– – -421,595 Closed
JF
1656
Jump Financial
Illinois
– – -335,011 Closed
ITP
1657
Iron Triangle Partners
Connecticut
– – -332,167 Closed
ACM
1658
Aquatic Capital Management
Illinois
– – -279,178 Closed
IG
1659
ING Group
Netherlands
– – -210,992 Closed
JCM
1660
Junto Capital Management
New York
– – -168,254 Closed
CCM
1661
Cinctive Capital Management
New York
– – -103,559 Closed
SFM
1662
Soros Fund Management
New York
– – -100,000 Closed
EI
1663
Ecofi Investissements
France
– – -100,000 Closed
AIMCA
1664
Alberta Investment Management Corp (AIMCo)
Alberta, Canada
– – -83,919 Closed
XT
1665
XTX Topco
Cayman Islands
– – -66,516 Closed
Nomura Holdings
1666
Nomura Holdings
Japan
– – -65,486 Closed
CM
1667
Castleark Management
Illinois
– – -64,870 Closed
CCS
1668
Concentric Capital Strategies
Connecticut
– – -40,448 Closed
USAA
1669
United Services Automobile Association
Texas
– – -34,540 Closed
SFI
1670
Susquehanna Fundamental Investments
Pennsylvania
– – -29,400 Closed
Capital Fund Management (CFM)
1671
Capital Fund Management (CFM)
France
– – -25,599 Closed
DF
1672
Donoghue Forlines
Massachusetts
– – -23,351 Closed
WG
1673
Winton Group
United Kingdom
– – -21,937 Closed
IAIM
1674
International Assets Investment Management
Florida
– – -21,855 Closed
IMC Chicago
1675
IMC Chicago
Illinois
– – -21,387 Closed
65 66
67
68 69