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Boston Scientific

1,701 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, 766 increasing their positions, 552 reducing their positions, and 132 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:

0.87% less ownership

Funds ownership: 91.43%90.56% (-0.87%)

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
1,701
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
Name Holding Trade Value Shares
Change
Change in
Stake
TAM
351
Trillium Asset Management
Massachusetts
$17.7M
HIMC
352
Heritage Investors Management Corp
Maryland
$16.9M
SCI
353
S&CO Inc
Massachusetts
$16.9M
TRSOTSOK
354
Teachers Retirement System of the State of Kentucky
Kentucky
$16.7M
OPERF
355
Oregon Public Employees Retirement Fund
Oregon
$16.5M
SC
356
SouthState Corp
Florida
$16.5M
KAS
357
Kestra Advisory Services
Texas
$16.4M
EMPI
358
Elo Mutual Pension Insurance
Finland
$16.4M
Rafferty Asset Management
359
Rafferty Asset Management
New York
$16.1M
APM
360
Avidity Partners Management
Texas
$16M
QCM
361
QRG Capital Management
Illinois
$16M
IMRF
362
Illinois Municipal Retirement Fund
Illinois
$16M
MCM
363
MAI Capital Management
Ohio
$15.9M
AIM
364
Avity Investment Management
Connecticut
$15.9M
AF
365
Avanza Fonder
Sweden
$15.8M
MOACM
366
Mutual of America Capital Management
New York
$15.7M
BA
367
Bridgewater Associates
Connecticut
$15.6M
SLAM
368
Swiss Life Asset Management
$15.6M
SOADOR
369
State of Alaska Department of Revenue
Alaska
$15.5M
BPCE
370
Bank Pictet & Cie (Europe)
Germany
$15.4M
CTI
371
Community Trust & Investment
Kentucky
$15.1M
CWM
372
Calamos Wealth Management
Illinois
$15.1M
JCM
373
Jag Capital Management
Missouri
$15.1M
ZDA
374
Zweig-DiMenna Associates
New York
$15.1M
GC
375
Guggenheim Capital
Illinois
$14.8M