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Boston Scientific
BSX

Overview Fund Activity

1,660 hedge funds and large institutions have $145B invested in Boston Scientific in 2025 Q2 according to their latest regulatory filings, with 151 funds opening new positions, 744 increasing their positions, 539 reducing their positions, and 86 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
1,660
Holders Change
+40
Holders Change %
+2.47%
% of All Funds
22.26%
Holding in Top 10
40
Holding in Top 10 Change
-10
Holding in Top 10 Change %
-20%
% of All Funds
0.54%
New
151
Increased
744
Reduced
539
Closed
86
Calls
$1.08B
Puts
$859M
Net Calls
+$225M
Net Calls Change
-$30.7M

Top Buyers

1
Edgewood Management
Edgewood Management
Connecticut
$747M
2
BlackRock
BlackRock
New York
$15.8B
3
VOYA Investment Management
VOYA Investment Management
Georgia
$939M
4
D.E. Shaw & Co
D.E. Shaw & Co
New York
$726M
5
Bessemer Group
Bessemer Group
New Jersey
$314M

Top Sellers

1
Fidelity Investments
Fidelity Investments
Massachusetts
$11.6B
2
JPMorgan Chase & Co
JPMorgan Chase & Co
New York
$2.76B
3
Massachusetts Financial Services
Massachusetts Financial Services
Massachusetts
$1.38B
4
Millennium Management
Millennium Management
New York
$444M
5
Winslow Capital Management
Winslow Capital Management
Minnesota
$1.14M
Name Holding Trade Value Shares
Change 		Shares
Change %
WTFG
1651
Wood Tarver Financial Group
Idaho
$2K – – –
TCM
1652
Tradewinds Capital Management
Washington
$1.93K – – –
HIA
1653
HFM Investment Advisors
New Jersey
$1.5K +$752 +7 +100%
PWM
1654
Proathlete Wealth Management
Florida
$1.29K +$1.29K +12 New
NECFA
1655
New England Capital Financial Advisors
Connecticut
$1.18K – – –
SHIM
1656
Stone House Investment Management
Pennsylvania
$1.07K +$1.07K +10 New
BCM
1657
Blume Capital Management
California
$967 – – –
TIM
1658
Total Investment Management
Arizona
$967 +$967 +9 New
WOC
1659
West Oak Capital
California
$349 – – –
RJA
1660
Ross\Johnson & Associates
Minnesota
$322 – – –
Alyeska Investment Group
1661
Alyeska Investment Group
Illinois
– -$121M -1,202,779 Closed
CF
1662
Corebridge Financial
Texas
– -$42.5M -421,595 Closed
JF
1663
Jump Financial
Illinois
– -$33.8M -335,011 Closed
ITP
1664
Iron Triangle Partners
Connecticut
– -$33.5M -332,167 Closed
ACM
1665
Aquatic Capital Management
Illinois
– -$28.2M -279,178 Closed
IG
1666
ING Group
Netherlands
– -$21.3M -210,992 Closed
JCM
1667
Junto Capital Management
New York
– -$17M -168,254 Closed
CCM
1668
Cinctive Capital Management
New York
– -$10.4M -103,559 Closed
SFM
1669
Soros Fund Management
New York
– -$10.1M -100,000 Closed
EI
1670
Ecofi Investissements
France
– -$8.62M -100,000 Closed
AIMCA
1671
Alberta Investment Management Corp (AIMCo)
Alberta, Canada
– -$8.47M -83,919 Closed
XT
1672
XTX Topco
Cayman Islands
– -$6.71M -66,516 Closed
Nomura Holdings
1673
Nomura Holdings
Japan
– -$6.61M -65,486 Closed
CM
1674
Castleark Management
Illinois
– -$6.54M -64,870 Closed
CCS
1675
Concentric Capital Strategies
Connecticut
– -$4.08M -40,448 Closed
65 66
67
68 69