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Boston Scientific

1,690 hedge funds and large institutions have $130B invested in Boston Scientific in 2025 Q3 according to their latest regulatory filings, with 177 funds opening new positions, 760 increasing their positions, 549 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:

1.08% less ownership

Funds ownership: 91.29%90.2% (-1.1%)

7% less funds holding in top 10

Funds holding in top 10: 4239 (-3)

10% less capital invested

Capital invested by funds: $145B → $130B (-$14.5B)

Holders
1,690
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
OCM
276
Osterweis Capital Management
California
$27.7M
QT
277
Quantbot Technologies
New York
$27.5M
SPS
278
Susquehanna Portfolio Strategies
Pennsylvania
$27.4M
ProShare Advisors
279
ProShare Advisors
Maryland
$27.4M
Diamond Hill Capital Management
280
Diamond Hill Capital Management
Ohio
$27.1M
Comerica Bank
281
Comerica Bank
Texas
$27.1M
KC
282
Kepler Cheuvreux
$27M
RPI
283
Railway Pension Investments
United Kingdom
$26.8M
PHK
284
Point72 Hong Kong
Hong Kong
$26.5M
Mirae Asset Global Investments
285
Mirae Asset Global Investments
South Korea
$26.5M
VMPIC
286
Varma Mutual Pension Insurance Co
Finland
$26.4M
CPC
287
Cookson Peirce & Co
Pennsylvania
$26.4M
SMFG
288
Sumitomo Mitsui Financial Group
Japan
$25.9M
Nomura Holdings
289
Nomura Holdings
Japan
$25.9M
IMPI
290
Ilmarinen Mutual Pension Insurance
Finland
$25.7M
CCM
291
Catalio Capital Management
New York
$25.7M
Connor, Clark & Lunn Investment Management (CC&L)
292
Connor, Clark & Lunn Investment Management (CC&L)
British Columbia, Canada
$25.3M
BSA
293
Braun Stacey Associates
New York
$25.2M
UIM
294
USS Investment Management
United Kingdom
$25.1M
Bank Julius Baer & Co
295
Bank Julius Baer & Co
Switzerland
$24.7M
X
296
Xponance
Pennsylvania
$24.2M
ZIM
297
Zacks Investment Management
Illinois
$24.2M
IG
298
ING Group
Netherlands
$24.1M
URS
299
Utah Retirement Systems
Utah
$23.8M
Truist Financial
300
Truist Financial
North Carolina
$23.6M