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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
22.25%
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
+$539M
3
VOYA Investment Management
VOYA Investment Management
Georgia
+$514M
4
D.E. Shaw & Co
D.E. Shaw & Co
New York
+$313M
5
Bessemer Group
Bessemer Group
New Jersey
+$311M

Top Sellers

1
Fidelity Investments
Fidelity Investments
Massachusetts
-$2.18B
2
JPMorgan Chase & Co
JPMorgan Chase & Co
New York
-$630M
3
Massachusetts Financial Services
Massachusetts Financial Services
Massachusetts
-$393M
4
Millennium Management
Millennium Management
New York
-$355M
5
Winslow Capital Management
Winslow Capital Management
Minnesota
-$284M
Name Holding Trade Value Shares
Change 		Shares
Change %
Impax Asset Management Group
126
Impax Asset Management Group
United Kingdom
$154M -$1.6M -15,034 -1%
National Bank of Canada
127
National Bank of Canada
Quebec, Canada
$151M +$57.7M +537,104 +62%
GAM
128
Groupama Asset Management
France
$150M +$11.6M +108,866 +8%
TG
129
TCW Group
California
$149M +$192K +1,792 +0.1%
HNB
130
Huntington National Bank
Ohio
$149M +$4.09M +38,069 +3%
CIBC Private Wealth Group
131
CIBC Private Wealth Group
Georgia
$148M +$20.1M +187,205 +16%
Universal-Beteiligungs- und Servicegesellschaft
132
Universal-Beteiligungs- und Servicegesellschaft
Germany
$146M +$5.05M +46,993 +4%
Lord, Abbett & Co
133
Lord, Abbett & Co
New Jersey
$143M -$24.6M -228,949 -15%
Public Employees Retirement Association of Colorado
134
Public Employees Retirement Association of Colorado
Colorado
$140M -$351K -3,264 -0.2%
Cerity Partners
135
Cerity Partners
New York
$140M +$1.14M +10,625 +0.8%
Prudential Financial
136
Prudential Financial
New Jersey
$137M -$14.3M -133,027 -9%
Ensign Peak Advisors
137
Ensign Peak Advisors
Utah
$134M +$29.8M +277,317 +28%
New York State Teachers Retirement System (NYSTRS)
138
New York State Teachers Retirement System (NYSTRS)
New York
$132M +$42.3K +394 +0%
PNC Financial Services Group
139
PNC Financial Services Group
Pennsylvania
$131M +$6.79M +63,237 +5%
ZIG
140
Zurich Insurance Group
Switzerland
$130M -$18.6M -172,766 -13%
Caisse de Depot et Placement du Quebec (CDPQ)
141
Caisse de Depot et Placement du Quebec (CDPQ)
Quebec, Canada
$128M -$92.4M -860,340 -42%
Manulife (Manufacturers Life Insurance)
142
Manulife (Manufacturers Life Insurance)
Ontario, Canada
$124M -$2.88M -26,826 -2%
GGHC
143
Gilder Gagnon Howe & Co
New York
$121M -$2.03M -18,886 -2%
SO
144
STRS Ohio
Ohio
$118M +$62.4K +581 +0.1%
SCM
145
Steadfast Capital Management
New York
$118M -$50M -465,056 -30%
Aviva
146
Aviva
United Kingdom
$117M +$43.7M +406,753 +60%
Temasek Holdings
147
Temasek Holdings
Singapore
$117M – – –
Calamos Advisors
148
Calamos Advisors
Illinois
$107M +$3.26M +30,311 +3%
FAM
149
Fred Alger Management
New York
$106M +$1.33M +12,366 +1%
MP
150
Munro Partners
Australia
$103M +$103M +958,605 New
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