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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 %
Vontobel Holding
51
Vontobel Holding
Switzerland
$460M +$1.8M +16,739 +0.4%
BNP Paribas Asset Management
52
BNP Paribas Asset Management
France
$452M +$341K +3,172 +0.1%
Holocene Advisors
53
Holocene Advisors
New York
$449M +$247M +2,295,282 +122%
Millennium Management
54
Millennium Management
New York
$444M -$355M -3,708,137 -44%
Dimensional Fund Advisors
55
Dimensional Fund Advisors
Texas
$442M -$58.4M -543,823 -12%
American Century Companies
56
American Century Companies
Missouri
$439M +$21M +195,947 +5%
Citigroup
57
Citigroup
New York
$433M +$123M +1,145,088 +40%
FCM
58
Farallon Capital Management
California
$428M +$23.4M +218,300 +6%
Neuberger Berman Group
59
Neuberger Berman Group
New York
$425M +$4.76M +44,274 +1%
Wells Fargo
60
Wells Fargo
California
$398M +$16.1M +149,530 +4%
Sumitomo Mitsui Trust Group
61
Sumitomo Mitsui Trust Group
Japan
$384M +$9.08M +84,529 +2%
California Public Employees Retirement System
62
California Public Employees Retirement System
California
$366M -$16.2M -151,279 -4%
National Pension Service
63
National Pension Service
South Korea
$363M -$15.8M -147,209 -4%
AI
64
Axiom Investors
Connecticut
$356M -$155M -1,440,644 -30%
AllianceBernstein
65
AllianceBernstein
Tennessee
$353M +$27M +251,601 +8%
AM
66
AGF Management
Ontario, Canada
$347M -$162M -1,512,670 -32%
Robeco Institutional Asset Management
67
Robeco Institutional Asset Management
Netherlands
$338M +$81.2M +756,199 +32%
Viking Global Investors
68
Viking Global Investors
Connecticut
$327M +$71.9M +669,000 +28%
Bank of Nova Scotia
69
Bank of Nova Scotia
Ontario, Canada
$325M +$168M +1,559,605 +106%
HSBC Holdings
70
HSBC Holdings
United Kingdom
$314M -$11.2M -104,679 -3%
Bessemer Group
71
Bessemer Group
New Jersey
$314M +$311M +2,899,653 +14,392%
BNP Paribas Financial Markets
72
BNP Paribas Financial Markets
France
$308M -$35.7M -332,100 -10%
Mitsubishi UFJ Asset Management
73
Mitsubishi UFJ Asset Management
Japan
$304M +$21.1M +196,498 +7%
Swedbank
74
Swedbank
Sweden
$303M +$162M +1,505,019 +115%
O
75
OrbiMed
New York
$302M – – –
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