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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
TRSOTSOK
351
Teachers Retirement System of the State of Kentucky
Kentucky
$16.7M
OPERF
352
Oregon Public Employees Retirement Fund
Oregon
$16.5M
SC
353
SouthState Corp
Florida
$16.5M
KAS
354
Kestra Advisory Services
Texas
$16.4M
EMPI
355
Elo Mutual Pension Insurance
Finland
$16.4M
Rafferty Asset Management
356
Rafferty Asset Management
New York
$16.1M
APM
357
Avidity Partners Management
Texas
$16M
QCM
358
QRG Capital Management
Illinois
$16M
IMRF
359
Illinois Municipal Retirement Fund
Illinois
$16M
MCM
360
MAI Capital Management
Ohio
$15.9M
AIM
361
Avity Investment Management
Connecticut
$15.9M
NRI
362
NFP Retirement Inc
California
$15.8M
AF
363
Avanza Fonder
Sweden
$15.8M
MOACM
364
Mutual of America Capital Management
New York
$15.7M
BA
365
Bridgewater Associates
Connecticut
$15.6M
SLAM
366
Swiss Life Asset Management
$15.6M
SOADOR
367
State of Alaska Department of Revenue
Alaska
$15.5M
BPCE
368
Bank Pictet & Cie (Europe)
Germany
$15.4M
CTI
369
Community Trust & Investment
Kentucky
$15.1M
CWM
370
Calamos Wealth Management
Illinois
$15.1M
JCM
371
Jag Capital Management
Missouri
$15.1M
ZDA
372
Zweig-DiMenna Associates
New York
$15.1M
GC
373
Guggenheim Capital
Illinois
$14.8M
CIBC World Market
374
CIBC World Market
Ontario, Canada
$14.5M
Pathstone Holdings
375
Pathstone Holdings
New Jersey
$14.5M