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Boston Scientific

1,690 hedge funds and large institutions have $130B invested in Boston Scientific in 2025 Q3 according to their latest regulatory filings, with 177 funds opening new positions, 760 increasing their positions, 549 reducing their positions, and 132 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:

1.08% less ownership

Funds ownership: 91.29%90.2% (-1.1%)

7% less funds holding in top 10

Funds holding in top 10: 4239 (-3)

10% less capital invested

Capital invested by funds: $145B → $130B (-$14.5B)

Holders
1,690
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
CI Investments Inc
126
CI Investments Inc
Ontario, Canada
$158M
Balyasny Asset Management
127
Balyasny Asset Management
Illinois
$152M
Allianz Asset Management
128
Allianz Asset Management
Germany
$146M
Ensign Peak Advisors
129
Ensign Peak Advisors
Utah
$144M
Korea Investment Corp
130
Korea Investment Corp
South Korea
$143M
HNB
131
Huntington National Bank
Ohio
$139M
CIBC Private Wealth Group
132
CIBC Private Wealth Group
Georgia
$135M
Adage Capital Partners
133
Adage Capital Partners
Massachusetts
$132M
State Board of Administration of Florida Retirement System
134
State Board of Administration of Florida Retirement System
Florida
$132M
Caisse de Depot et Placement du Quebec (CDPQ)
135
Caisse de Depot et Placement du Quebec (CDPQ)
Quebec, Canada
$131M
Prudential Financial
136
Prudential Financial
New Jersey
$130M
Universal-Beteiligungs- und Servicegesellschaft
137
Universal-Beteiligungs- und Servicegesellschaft
Germany
$130M
GAM
138
Groupama Asset Management
France
$130M
TG
139
TCW Group
California
$130M
Public Employees Retirement Association of Colorado
140
Public Employees Retirement Association of Colorado
Colorado
$125M
CS
141
Candriam SCA
Luxembourg
$122M
MP
142
Munro Partners
Australia
$121M
Cerity Partners
143
Cerity Partners
New York
$120M
PNC Financial Services Group
144
PNC Financial Services Group
Pennsylvania
$119M
New York State Teachers Retirement System (NYSTRS)
145
New York State Teachers Retirement System (NYSTRS)
New York
$119M
Aviva
146
Aviva
United Kingdom
$115M
AQR Capital Management
147
AQR Capital Management
Connecticut
$114M
Lord, Abbett & Co
148
Lord, Abbett & Co
New Jersey
$110M
GGHC
149
Gilder Gagnon Howe & Co
New York
$108M
UM
150
UniSuper Management
Australia
$105M