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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 %
Envestnet Asset Management
76
Envestnet Asset Management
Illinois
$301M +$1.5M +13,947 +0.5%
ATO
77
Alecta Tjanstepension Omsesidigt
Sweden
$294M – – –
RhumbLine Advisers
78
RhumbLine Advisers
Massachusetts
$294M -$6.32M -58,819 -2%
SP
79
SurgoCap Partners
New York
$293M +$8.06M +75,000 +3%
A
80
AustralianSuper
Australia
$290M -$13.2M -122,742 -4%
Assenagon Asset Management
81
Assenagon Asset Management
Luxembourg
$287M +$20M +185,821 +7%
KBC Group
82
KBC Group
Belgium
$286M +$45.1M +419,460 +19%
Aberdeen Group
83
Aberdeen Group
United Kingdom
$276M -$25.8M -242,523 -9%
SEI Investments
84
SEI Investments
Pennsylvania
$270M -$80.1M -746,140 -23%
Axa
85
Axa
France
$270M +$34.1M +317,311 +14%
Natixis Advisors
86
Natixis Advisors
Massachusetts
$269M +$36.4M +338,446 +16%
Two Sigma Investments
87
Two Sigma Investments
New York
$265M +$2.75M +25,629 +1%
Point72 Asset Management
88
Point72 Asset Management
Connecticut
$264M +$62.3M +580,128 +31%
Handelsbanken Fonder
89
Handelsbanken Fonder
Sweden
$256M -$30.3M -281,890 -11%
Raymond James Financial
90
Raymond James Financial
Florida
$255M +$21.5M +199,932 +9%
California State Teachers Retirement System (CalSTRS)
91
California State Teachers Retirement System (CalSTRS)
California
$255M +$4.01M +37,356 +2%
JFL
92
Jarislowsky, Fraser Ltd
Quebec, Canada
$244M -$276K -2,566 -0.1%
RG
93
Rathbones Group
United Kingdom
$242M -$9.55M -88,943 -4%
WorldQuant Millennium Advisors
94
WorldQuant Millennium Advisors
New York
$239M +$23.3M +216,841 +11%
TD Asset Management
95
TD Asset Management
Ontario, Canada
$234M +$2.07M +19,270 +0.9%
Man Group
96
Man Group
United Kingdom
$230M +$141M +1,308,711 +158%
Jennison Associates
97
Jennison Associates
New York
$227M +$127M +1,186,949 +128%
New York State Common Retirement Fund
98
New York State Common Retirement Fund
New York
$224M -$2.21M -20,594 -1%
Adage Capital Partners
99
Adage Capital Partners
Massachusetts
$221M -$57.7M -536,748 -21%
Stifel Financial
100
Stifel Financial
Missouri
$221M +$7.08M +65,896 +3%
2 3
4
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