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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
RJA
1701
Ross\Johnson & Associates
Minnesota
$293
Norges Bank
1702
Norges Bank
Norway
ZIG
1703
Zurich Insurance Group
Switzerland
SCM
1704
Steadfast Capital Management
New York
PI
1705
PGGM Investments
Netherlands
STP
1706
Science & Technology Partners
New York
FTM
1707
First Turn Management
California
Simplex Trading
1708
Simplex Trading
Illinois
NCM
1709
Nearwater Capital Markets
Ireland
VC
1710
Vestor Capital
Illinois
PFM
1711
Premier Fund Managers
United Kingdom
LOAME
1712
Lombard Odier Asset Management (Europe)
United Kingdom
RG
1713
Redmile Group
California
PAMP
1714
Polar Asset Management Partners
Ontario, Canada
NC
1715
NewSquare Capital
Pennsylvania
ACM
1716
Aubrey Capital Management
United Kingdom
NIP
1717
Nicholas Investment Partners
California
LAM
1718
LECAP Asset Management
United Kingdom
BCM
1719
Barometer Capital Management
Ontario, Canada
ORAM
1720
One River Asset Management
Connecticut
QIM
1721
Quantitative Investment Management
Virginia
UFF
1722
USA Financial Formulas
Michigan
DWA
1723
Dorsey Wright & Associates
California
CA
1724
Cache Advisors
California
CC
1725
Centiva Capital
New York