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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 %
NL
26
Nuveen LLC
North Carolina
$1.02B +$264M +2,461,003 +35%
VOYA Investment Management
27
VOYA Investment Management
Georgia
$939M +$514M +4,789,995 +121%
Charles Schwab
28
Charles Schwab
California
$937M +$15.4M +143,697 +2%
Artisan Partners
29
Artisan Partners
Wisconsin
$915M -$123M -1,141,087 -12%
Schroder Investment Management Group
30
Schroder Investment Management Group
United Kingdom
$898M +$101M +940,875 +13%
Ameriprise
31
Ameriprise
Minnesota
$838M -$6.97M -64,744 -0.8%
Fisher Asset Management
32
Fisher Asset Management
Washington
$828M +$101M +939,834 +14%
Franklin Resources
33
Franklin Resources
California
$815M +$14.5M +135,266 +2%
Deutsche Bank
34
Deutsche Bank
Germany
$811M +$224M +2,083,231 +38%
Marshall Wace
35
Marshall Wace
United Kingdom
$805M -$48.4M -450,505 -6%
Edgewood Management
36
Edgewood Management
Connecticut
$747M +$747M +6,951,450 New
D.E. Shaw & Co
37
D.E. Shaw & Co
New York
$726M +$313M +2,916,007 +76%
Lazard Asset Management
38
Lazard Asset Management
New York
$712M +$40M +372,200 +6%
Royal Bank of Canada
39
Royal Bank of Canada
Ontario, Canada
$712M +$174M +1,618,799 +32%
Capital Research Global Investors
40
Capital Research Global Investors
California
$710M +$71.5M +665,827 +11%
Arrowstreet Capital
41
Arrowstreet Capital
Massachusetts
$701M -$24.1M -224,737 -3%
Citadel Advisors
42
Citadel Advisors
Florida
$580M -$3.14M -29,250 -0.5%
Two Sigma Advisers
43
Two Sigma Advisers
New York
$555M +$104M +964,000 +23%
Ninety One (UK)
44
Ninety One (UK)
United Kingdom
$553M +$139M +1,290,414 +33%
Fidelity International
45
Fidelity International
Bermuda
$524M -$89.8M -835,657 -15%
Canada Pension Plan Investment Board
46
Canada Pension Plan Investment Board
Ontario, Canada
$507M -$163M -1,515,917 -24%
Qube Research & Technologies (QRT)
47
Qube Research & Technologies (QRT)
United Kingdom
$503M +$185M +1,719,386 +58%
Swiss National Bank
48
Swiss National Bank
Switzerland
$481M +$34.4M +320,400 +8%
Pictet Asset Management
49
Pictet Asset Management
Switzerland
$472M -$7.62M -70,913 -2%
Barclays
50
Barclays
United Kingdom
$469M -$125M -1,168,302 -21%
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