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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.

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 %
RAM
201
Resona Asset Management
Japan
$53M +$2.67M +24,919 +5%
N
202
Natixis
France
$52.6M -$6.7M -62,405 -11%
Hudson Bay Capital Management
203
Hudson Bay Capital Management
Connecticut
$52M +$52M +484,000 New
ACA
204
Anchor Capital Advisors
Massachusetts
$51.7M -$1.63M -15,155 -3%
TAM
205
Tocqueville Asset Management
New York
$51M -$1.8M -16,802 -3%
PCH
206
Polar Capital Holdings
United Kingdom
$48.8M -$1.81M -16,856 -4%
AV
207
ASR Vermogensbeheer
Netherlands
$48.8M +$190K +1,770 +0.4%
CSS
208
Cubist Systematic Strategies
Connecticut
$48.5M -$40.5M -377,032 -45%
DnB Asset Management
209
DnB Asset Management
Norway
$47.4M -$3.65M -33,954 -7%
ASRS
210
Arizona State Retirement System
Arizona
$46.4M -$2.46M -22,905 -5%
SI
211
Sofinnova Investments
California
$46.3M +$46.3M +431,200 New
First Trust Advisors
212
First Trust Advisors
Illinois
$46.1M -$20.2M -188,265 -30%
MCP
213
Meridiem Capital Partners
Texas
$45.8M +$31.8M +296,129 +227%
EOJOAM
214
E. Ohman J:or Asset Management
Sweden
$44.5M +$4.58M +42,616 +11%
BHC
215
Bowen Hanes & Co
Florida
$44.5M +$883K +8,220 +2%
OBAM
216
ODDO BHF Asset Management
France
$44.4M +$1.54M +14,384 +4%
SOMRS
217
State of Michigan Retirement System
Michigan
$43.2M +$269K +2,500 +0.6%
IIM
218
INTECH Investment Management
Florida
$42.2M +$1.12M +10,436 +3%
MIM
219
MetLife Investment Management
New Jersey
$41.7M +$621K +5,777 +2%
Nisa Investment Advisors
220
Nisa Investment Advisors
Missouri
$41.2M -$2.38M -22,142 -5%
MSR
221
Main Street Research
Connecticut
$41M +$915K +8,518 +2%
ABC
222
Associated Banc-Corp
Wisconsin
$40M -$303K -2,821 -0.8%
COPPSERS
223
Commonwealth of Pennsylvania Public School Employees Retirement System
Pennsylvania
$39M +$2.77M +25,797 +8%
CNB
224
Czech National Bank
Czech Republic
$38.8M +$2.47M +23,011 +7%
CFB
225
Cullen/Frost Bankers
Texas
$38.8M +$21.8K +203 +0.1%
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