BSX icon

Boston Scientific

1,691 hedge funds and large institutions have $131B invested in Boston Scientific in 2025 Q3 according to their latest regulatory filings, with 177 funds opening new positions, 762 increasing their positions, 548 reducing their positions, and 133 closing their positions.

New
Increased
Maintained
Reduced
Closed

more repeat investments, than reductions

Existing positions increased: | Existing positions reduced:

more first-time investments, than exits

New positions opened: | Existing positions closed:

more call options, than puts

Call options by funds: $ | Put options by funds: $

more funds holding

Funds holding:

0.88% less ownership

Funds ownership: 91.29%90.41% (-0.88%)

7% less funds holding in top 10

Funds holding in top 10: 4239 (-3)

10% less capital invested

Capital invested by funds: $145B → $131B (-$14.2B)

Holders
1,691
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
39
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$1.13B
Puts
$989M
Net Calls
Net Calls Change

Top Buyers

1 +$671M
2 +$547M
3 +$358M
4
Millennium Management
Millennium Management
New York
+$357M
5
Citadel Advisors
Citadel Advisors
Florida
+$342M
Name Holding Trade Value Shares
Change
Change in
Stake
Baird Financial Group
276
Baird Financial Group
Wisconsin
$28.2M
OCM
277
Osterweis Capital Management
California
$27.7M
QT
278
Quantbot Technologies
New York
$27.5M
SPS
279
Susquehanna Portfolio Strategies
Pennsylvania
$27.4M
ProShare Advisors
280
ProShare Advisors
Maryland
$27.4M
Diamond Hill Capital Management
281
Diamond Hill Capital Management
Ohio
$27.1M
Comerica Bank
282
Comerica Bank
Texas
$27.1M
KC
283
Kepler Cheuvreux
$27M
RPI
284
Railway Pension Investments
United Kingdom
$26.8M
PHK
285
Point72 Hong Kong
Hong Kong
$26.5M
Mirae Asset Global Investments
286
Mirae Asset Global Investments
South Korea
$26.5M
VMPIC
287
Varma Mutual Pension Insurance Co
Finland
$26.4M
CPC
288
Cookson Peirce & Co
Pennsylvania
$26.4M
SMFG
289
Sumitomo Mitsui Financial Group
Japan
$25.9M
Nomura Holdings
290
Nomura Holdings
Japan
$25.9M
IMPI
291
Ilmarinen Mutual Pension Insurance
Finland
$25.7M
CCM
292
Catalio Capital Management
New York
$25.7M
Connor, Clark & Lunn Investment Management (CC&L)
293
Connor, Clark & Lunn Investment Management (CC&L)
British Columbia, Canada
$25.3M
BSA
294
Braun Stacey Associates
New York
$25.2M
UIM
295
USS Investment Management
United Kingdom
$25.1M
Bank Julius Baer & Co
296
Bank Julius Baer & Co
Switzerland
$24.7M
X
297
Xponance
Pennsylvania
$24.2M
ZIM
298
Zacks Investment Management
Illinois
$24.2M
IG
299
ING Group
Netherlands
$24.1M
URS
300
Utah Retirement Systems
Utah
$23.8M