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Boston Scientific
BSX

Overview Fund Activity

1,659 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, 538 reducing their positions, and 86 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
1,659
Holders Change
+39
Holders Change %
+2.41%
% of All Funds
22.27%
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
538
Closed
86
Calls
$1.08B
Puts
$859M
Net Calls
+$225M
Net Calls Change
-$30.7M

Top Buyers

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

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 Holding Trade Value Shares
Change 		Shares
Change %
Janney Montgomery Scott
251
Janney Montgomery Scott
Pennsylvania
$32M +$1.34M +12,497 +4%
Fifth Third Bancorp
252
Fifth Third Bancorp
Ohio
$31.8M +$2.64M +24,557 +9%
RPAM
253
Rhenman & Partners Asset Management
Sweden
$31.8M -$430K -4,000 -1%
LA
254
LBP AM
France
$31.2M +$11.6M +108,205 +59%
CWM
255
Congress Wealth Management
Massachusetts
$31.1M +$5.17M +48,132 +20%
FAF
256
Fjarde Ap-fonden
Sweden
$30.9M +$5.99M +55,800 +24%
ProShare Advisors
257
ProShare Advisors
Maryland
$30.8M +$5.31M +49,430 +21%
OCM
258
Osterweis Capital Management
California
$30.4M +$415K +3,865 +1%
PHP
259
Parkman Healthcare Partners
Connecticut
$30.4M +$6.14M +57,176 +25%
Comerica Bank
260
Comerica Bank
Texas
$30.3M -$713K -6,634 -2%
OSAM
261
O'Shaughnessy Asset Management
Connecticut
$30.3M +$2.07M +19,276 +7%
DIA
262
Dana Investment Advisors
Wisconsin
$30.1M -$3.11M -28,965 -9%
PA
263
Perceptive Advisors
New York
$30.1M +$16.1M +150,000 +115%
Walleye Capital
264
Walleye Capital
New York
$30.1M -$7.78M -72,410 -21%
Creative Planning
265
Creative Planning
Kansas
$29.4M +$1.68M +15,673 +6%
Baird Financial Group
266
Baird Financial Group
Wisconsin
$29.4M +$3.48M +32,417 +13%
Daiwa Securities Group
267
Daiwa Securities Group
Japan
$29.2M +$2.89M +26,891 +11%
RPI
268
Railway Pension Investments
United Kingdom
$28.9M -$752K -7,000 -3%
EB
269
Eastern Bank
Massachusetts
$28.8M +$6.38M +59,385 +28%
VMPIC
270
Varma Mutual Pension Insurance Co
Finland
$28.8M -$1.17M -10,900 -4%
EI
271
Ethic Inc
New York
$28.6M -$56.4K -529 -0.2%
TIAA Trust, National Association
272
TIAA Trust, National Association
North Carolina
$28.3M +$3.38M +31,458 +14%
IMPI
273
Ilmarinen Mutual Pension Insurance
Finland
$28.2M – – –
CPC
274
Cookson Peirce & Co
Pennsylvania
$28.2M -$40.1K -373 -0.1%
Bank Julius Baer & Co
275
Bank Julius Baer & Co
Switzerland
$28M +$268K +2,494 +1%
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