BSX icon

Boston Scientific
BSX

Overview Fund Activity

1,660 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, 539 reducing their positions, and 86 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
1,660
Holders Change
+40
Holders Change %
+2.47%
% of All Funds
22.26%
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
539
Closed
86
Calls
$1.08B
Puts
$859M
Net Calls
+$225M
Net Calls Change
-$30.7M

Top Buyers

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

Top Sellers

1
Fidelity Investments
Fidelity Investments
Massachusetts
$11.6B
2
JPMorgan Chase & Co
JPMorgan Chase & Co
New York
$2.76B
3
Massachusetts Financial Services
Massachusetts Financial Services
Massachusetts
$1.38B
4
Millennium Management
Millennium Management
New York
$444M
5
Winslow Capital Management
Winslow Capital Management
Minnesota
$1.14M
Name Holding Trade Value Shares
Change 		Shares
Change %
Skandinaviska Enskilda Banken (SEB)
101
Skandinaviska Enskilda Banken (SEB)
Sweden
$218M +$71.3M +663,569 +49%
Bank of Montreal
102
Bank of Montreal
Ontario, Canada
$217M -$12.2M -113,247 -5%
Voloridge Investment Management
103
Voloridge Investment Management
Florida
$217M +$217M +2,018,678 New
UE
104
Unisphere Establishment
Liechtenstein
$211M -$21.5M -200,000 -9%
Macquarie Group
105
Macquarie Group
Australia
$209M -$6.61M -61,537 -3%
Canada Life
106
Canada Life
Manitoba, Canada
$207M +$11M +101,925 +6%
GLA
107
Great Lakes Advisors
Illinois
$200M -$22.4M -208,338 -10%
Principal Financial Group
108
Principal Financial Group
Iowa
$199M -$3.66M -34,044 -2%
Allianz Asset Management
109
Allianz Asset Management
Germany
$198M +$48.5M +451,135 +32%
AQR Capital Management
110
AQR Capital Management
Connecticut
$197M +$73.5M +687,364 +59%
DekaBank Deutsche Girozentrale
111
DekaBank Deutsche Girozentrale
Germany
$195M +$15.7M +147,932 +9%
Zurich Cantonal Bank
112
Zurich Cantonal Bank
Switzerland
$195M +$53.2M +495,346 +38%
Federated Hermes
113
Federated Hermes
Pennsylvania
$195M +$2M +18,665 +1%
BG
114
Bellevue Group
Switzerland
$190M -$20M -185,826 -10%
Allspring Global Investments
115
Allspring Global Investments
North Carolina
$189M -$5.21M -49,764 -3%
CAM
116
Congress Asset Management
Massachusetts
$183M -$1.85M -17,258 -1%
ECU
117
Egerton Capital (UK)
United Kingdom
$176M +$176M +1,640,956 New
LPL Financial
118
LPL Financial
California
$172M +$51.6M +480,430 +43%
Mackenzie Financial
119
Mackenzie Financial
Ontario, Canada
$172M +$89.4M +832,272 +108%
Balyasny Asset Management
120
Balyasny Asset Management
Illinois
$162M -$35.8M -333,266 -18%
Renaissance Technologies
121
Renaissance Technologies
New York
$161M +$90.8M +844,988 +130%
CI Investments Inc
122
CI Investments Inc
Ontario, Canada
$160M +$11.7M +108,475 +8%
State Board of Administration of Florida Retirement System
123
State Board of Administration of Florida Retirement System
Florida
$157M +$293K +2,729 +0.2%
Korea Investment Corp
124
Korea Investment Corp
South Korea
$157M -$15M -139,401 -9%
Russell Investments Group
125
Russell Investments Group
United Kingdom
$155M +$12.9M +120,648 +9%
3 4
5
6 7