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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
Bank of Montreal
101
Bank of Montreal
Ontario, Canada
$209M
UE
102
Unisphere Establishment
Liechtenstein
$206M
Citigroup
103
Citigroup
New York
$206M
Credit Agricole
104
Credit Agricole
France
$205M
Allspring Global Investments
105
Allspring Global Investments
North Carolina
$195M
TD Asset Management
106
TD Asset Management
Ontario, Canada
$195M
Canada Life
107
Canada Life
Manitoba, Canada
$190M
Macquarie Group
108
Macquarie Group
Australia
$189M
New York State Common Retirement Fund
109
New York State Common Retirement Fund
New York
$188M
Zurich Cantonal Bank
110
Zurich Cantonal Bank
Switzerland
$182M
DekaBank Deutsche Girozentrale
111
DekaBank Deutsche Girozentrale
Germany
$180M
Squarepoint
112
Squarepoint
New York
$179M
GLA
113
Great Lakes Advisors
Illinois
$179M
Public Sector Pension Investment Board (PSP Investments)
114
Public Sector Pension Investment Board (PSP Investments)
Quebec, Canada
$178M
WorldQuant Millennium Advisors
115
WorldQuant Millennium Advisors
New York
$177M
DPL
116
Danica Pension Livsforsikrings
$174M
Impax Asset Management Group
117
Impax Asset Management Group
United Kingdom
$169M
CAM
118
Congress Asset Management
Massachusetts
$164M
Temasek Holdings
119
Temasek Holdings
Singapore
$164M
LPL Financial
120
LPL Financial
California
$163M
BG
121
Bellevue Group
Switzerland
$162M
Russell Investments Group
122
Russell Investments Group
United Kingdom
$161M
Federated Hermes
123
Federated Hermes
Pennsylvania
$161M
National Bank of Canada
124
National Bank of Canada
Quebec, Canada
$160M
Principal Financial Group
125
Principal Financial Group
Iowa
$160M