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Boston Scientific

1,691 hedge funds and large institutions have $131B invested in Boston Scientific in 2025 Q3 according to their latest regulatory filings, with 177 funds opening new positions, 762 increasing their positions, 548 reducing their positions, and 133 closing their positions.

New
Increased
Maintained
Reduced
Closed

more repeat investments, than reductions

Existing positions increased: | Existing positions reduced:

more first-time investments, than exits

New positions opened: | Existing positions closed:

more call options, than puts

Call options by funds: $ | Put options by funds: $

more funds holding

Funds holding:

0.88% less ownership

Funds ownership: 91.29%90.41% (-0.88%)

7% less funds holding in top 10

Funds holding in top 10: 4239 (-3)

10% less capital invested

Capital invested by funds: $145B → $131B (-$14.2B)

Holders
1,691
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
39
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$1.13B
Puts
$989M
Net Calls
Net Calls Change

Top Buyers

1 +$671M
2 +$547M
3 +$358M
4
Millennium Management
Millennium Management
New York
+$357M
5
Citadel Advisors
Citadel Advisors
Florida
+$342M
Name Holding Trade Value Shares
Change
Change in
Stake
ASC
176
Atalanta Sosnoff Capital
New York
$67.9M
Royal London Asset Management
177
Royal London Asset Management
United Kingdom
$66.3M
Northwestern Mutual Wealth Management
178
Northwestern Mutual Wealth Management
Wisconsin
$65.6M
HA
179
Homestead Advisers
Virginia
$65.3M
Treasurer of the State of North Carolina
180
Treasurer of the State of North Carolina
North Carolina
$64.8M
Tudor Investment Corp
181
Tudor Investment Corp
Connecticut
$64.5M
PCH
182
Polar Capital Holdings
United Kingdom
$63.9M
Ohio Public Employees Retirement System (OPERS)
183
Ohio Public Employees Retirement System (OPERS)
Ohio
$63.1M
Thrivent Financial for Lutherans
184
Thrivent Financial for Lutherans
Minnesota
$62.1M
NC
185
Nicholas Company
Wisconsin
$61.2M
GLF
186
Groupe la Francaise
France
$60M
KK
187
KLP Kapitalforvaltning
Norway
$59.8M
O
188
Ossiam
France
$59.7M
CBU
189
CIBC Bancorp USA
Illinois
$59M
CC
190
Chicago Capital
Illinois
$57M
GIA
191
Gateway Investment Advisers
Ohio
$56.7M
SI
192
Sofinnova Investments
California
$55.6M
ZIC
193
ZWJ Investment Counsel
Georgia
$55.2M
MSV
194
MN Services Vermogensbeheer
Netherlands
$54.9M
HPG
195
Harvest Portfolios Group
Ontario, Canada
$54.9M
AAIS
196
ABN AMRO Investment Solutions
$54.8M
EGM
197
Engineers Gate Manager
New York
$54.5M
ERSOT
198
Employees Retirement System of Texas
Texas
$54.2M
Toronto Dominion Bank
199
Toronto Dominion Bank
Ontario, Canada
$54.1M
N
200
Natixis
France
$53.3M