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Boston Scientific
BSX

Overview Fund Activity

1,620 hedge funds and large institutions have $133B invested in Boston Scientific in 2025 Q1 according to their latest regulatory filings, with 234 funds opening new positions, 655 increasing their positions, 545 reducing their positions, and 75 closing their positions.

Holders
1,620
Holders Change
+129
Holders Change %
+8.65%
% of All Funds
22.01%
Holding in Top 10
50
Holding in Top 10 Change
+11
Holding in Top 10 Change %
+28.21%
% of All Funds
0.68%
New
234
Increased
655
Reduced
545
Closed
75
Calls
$1.07B
Puts
$819M
Net Calls
+$256M
Net Calls Change
+$371M

Top Buyers

1
JPMorgan Chase & Co
1
JPMorgan Chase & Co
New York
$3.18B
2
Bank of America
2
Bank of America
North Carolina
$3.18B
3
Two Sigma Advisers
3
Two Sigma Advisers
New York
$424M
4
D.E. Shaw & Co
4
D.E. Shaw & Co
New York
$387M
5
SP
5
SurgoCap Partners
New York
$267M

Top Sellers

1
Franklin Resources
1
Franklin Resources
California
$751M
2
DZ Bank
2
DZ Bank
Germany
$1.79B
3
Fidelity Investments
3
Fidelity Investments
Massachusetts
$13B
4
Massachusetts Financial Services
4
Massachusetts Financial Services
Massachusetts
$1.67B
5
Impax Asset Management Group
5
Impax Asset Management Group
United Kingdom
$146M
Name Holding Trade Value Shares
Change 		Shares
Change %
Mitsubishi UFJ Asset Management
76
Mitsubishi UFJ Asset Management
Japan
$265M +$29.8M +295,658 +13%
Adage Capital Partners
77
Adage Capital Partners
Massachusetts
$261M -$2.85M -28,259 -1%
Assenagon Asset Management
78
Assenagon Asset Management
Luxembourg
$251M +$155M +1,536,663 +162%
Two Sigma Investments
79
Two Sigma Investments
New York
$246M +$171M +1,698,900 +229%
Robeco Institutional Asset Management
80
Robeco Institutional Asset Management
Netherlands
$241M +$47.1M +467,277 +24%
Viking Global Investors
81
Viking Global Investors
Connecticut
$240M +$20.6M +204,556 +9%
RG
82
Rathbones Group
United Kingdom
$236M -$5.67M -56,187 -2%
California State Teachers Retirement System (CalSTRS)
83
California State Teachers Retirement System (CalSTRS)
California
$236M -$1.05M -10,373 -0.4%
JFL
84
Jarislowsky, Fraser Ltd
Quebec, Canada
$229M -$25M -247,733 -10%
KBC Group
85
KBC Group
Belgium
$226M -$13.9M -137,408 -6%
Axa
86
Axa
France
$221M +$22.4M +221,871 +11%
Raymond James Financial
87
Raymond James Financial
Florida
$220M +$4.18M +41,422 +2%
Natixis Advisors
88
Natixis Advisors
Massachusetts
$219M +$13.8M +136,346 +7%
UE
89
Unisphere Establishment
Liechtenstein
$219M -$22.7M -225,000 -9%
TD Asset Management
90
TD Asset Management
Ontario, Canada
$218M -$13M -128,867 -6%
Bank of Montreal
91
Bank of Montreal
Ontario, Canada
$215M -$24.5M -242,939 -10%
New York State Common Retirement Fund
92
New York State Common Retirement Fund
New York
$212M -$3.33M -33,043 -2%
GLA
93
Great Lakes Advisors
Illinois
$209M -$14.5M -143,586 -6%
Caisse de Depot et Placement du Quebec (CDPQ)
94
Caisse de Depot et Placement du Quebec (CDPQ)
Quebec, Canada
$207M +$22.5M +223,502 +12%
WorldQuant Millennium Advisors
95
WorldQuant Millennium Advisors
New York
$203M +$64.9M +643,264 +47%
Macquarie Group
96
Macquarie Group
Australia
$202M +$8.41M +83,337 +4%
Stifel Financial
97
Stifel Financial
Missouri
$200M -$1.6M -15,813 -0.8%
BG
98
Bellevue Group
Switzerland
$197M -$18.6M -184,275 -9%
Principal Financial Group
99
Principal Financial Group
Iowa
$190M -$10.8M -106,607 -5%
Holocene Advisors
100
Holocene Advisors
New York
$190M -$118M -1,171,948 -38%
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4
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