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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 %
PAM
176
Panagora Asset Management
Massachusetts
$71.7M -$47.6M -443,488 -40%
Tudor Investment Corp
177
Tudor Investment Corp
Connecticut
$69.9M +$42.4M +394,489 +154%
O
178
Ossiam
France
$69.8M -$21.3M -198,453 -23%
Los Angeles Capital Management
179
Los Angeles Capital Management
California
$69.2M +$44.4M +413,643 +179%
GLF
180
Groupe la Francaise
France
$67.9M +$31.9M +297,049 +89%
NC
181
Nicholas Company
Wisconsin
$67.4M – – –
SSA
182
Schonfeld Strategic Advisors
New York
$66.7M +$41.7M +388,455 +167%
KK
183
KLP Kapitalforvaltning
Norway
$66M +$2.82M +26,300 +4%
Toronto Dominion Bank
184
Toronto Dominion Bank
Ontario, Canada
$65.1M -$30.1M -280,406 -32%
CWM
185
CIBC World Markets
New York
$63M +$900K +8,383 +1%
CC
186
Chicago Capital
Illinois
$62.9M +$9.36M +87,168 +18%
GIA
187
Gateway Investment Advisers
Ohio
$62.3M -$2.53M -23,550 -4%
CHP
188
Castle Hook Partners
New York
$62.2M -$26.8M -249,758 -30%
ZIC
189
ZWJ Investment Counsel
Georgia
$60.8M -$4.07M -37,879 -6%
Thrivent Financial for Lutherans
190
Thrivent Financial for Lutherans
Minnesota
$60.6M +$2.07M +19,264 +4%
State of Tennessee, Department of Treasury
191
State of Tennessee, Department of Treasury
Tennessee
$60.4M +$6.95M +64,742 +13%
ERSOT
192
Employees Retirement System of Texas
Texas
$60.1M -$3.18M -29,649 -5%
BFS
193
Bradley Foster & Sargent
Connecticut
$59.6M -$931K -8,670 -2%
MSV
194
MN Services Vermogensbeheer
Netherlands
$59.4M +$1.36M +12,700 +2%
IHAM
195
Integral Health Asset Management
New York
$59.1M -$10.7M -100,000 -15%
HPG
196
Harvest Portfolios Group
Ontario, Canada
$59M +$670K +6,234 +1%
SCB
197
Saudi Central Bank
Saudi Arabia
$57.9M +$57.9M +538,843 +92,904%
MIF
198
Mediolanum International Funds
Ireland
$56M +$11M +103,124 +24%
EAM
199
Erste Asset Management
Austria
$55.3M +$24.5M +229,053 +80%
State of New Jersey Common Pension Fund D
200
State of New Jersey Common Pension Fund D
New Jersey
$53.3M +$59.6K +555 +0.1%
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