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Boston Scientific
BSX

Overview Fund Activity

1,620 hedge funds and large institutions have $133B invested in Boston Scientific in 2025 Q1 according to their latest regulatory filings, with 233 funds opening new positions, 657 increasing their positions, 544 reducing their positions, and 75 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
1,620
Holders Change
+128
Holders Change %
+8.58%
% of All Funds
22%
Holding in Top 10
50
Holding in Top 10 Change
+11
Holding in Top 10 Change %
+28.21%
% of All Funds
0.68%
New
233
Increased
657
Reduced
544
Closed
75
Calls
$1.07B
Puts
$819M
Net Calls
+$256M
Net Calls Change
+$371M

Top Buyers

1
JPMorgan Chase & Co
JPMorgan Chase & Co
New York
+$533M
2
Bank of America
Bank of America
North Carolina
+$411M
3
Two Sigma Advisers
Two Sigma Advisers
New York
+$348M
4
D.E. Shaw & Co
D.E. Shaw & Co
New York
+$310M
5
SP
SurgoCap Partners
New York
+$267M

Top Sellers

1
Franklin Resources
Franklin Resources
California
-$917M
2
DZ Bank
DZ Bank
Germany
-$461M
3
Fidelity Investments
Fidelity Investments
Massachusetts
-$388M
4
Massachusetts Financial Services
Massachusetts Financial Services
Massachusetts
-$317M
5
Impax Asset Management Group
Impax Asset Management Group
United Kingdom
-$304M
Name Holding Trade Value Shares
Change 		Shares
Change %
MGP
451
Metis Global Partners
California
$7.37M +$1.12M +11,106 +18%
GWM
452
GDS Wealth Management
Texas
$7.28M +$5.1M +50,525 +234%
UB
453
UMB Bank
Missouri
$7.27M +$3.16M +31,276 +77%
CA
454
Cornerstone Advisors
North Carolina
$7.23M – – –
EFM
455
E Fund Management
China
$7.22M -$1.54M -15,288 -18%
FMI
456
Factory Mutual Insurance
Massachusetts
$7.17M – – –
OQS
457
Occudo Quantitative Strategies
Florida
$7.16M +$4.53M +45,568 +172%
SC
458
SummitTX Capital
Texas
$7.13M +$7.13M +70,686 New
PAMP
459
Polar Asset Management Partners
Ontario, Canada
$7.11M -$41.5M -411,200 -85%
NA
460
Navellier & Associates
Nevada
$7.1M +$6.58M +63,142 +1,270%
CRCM
461
Crystal Rock Capital Management
Illinois
$6.99M -$1.59M -15,780 -19%
PNAA
462
Pictet North America Advisors
Switzerland
$6.99M -$891K -8,829 -11%
NMERB
463
New Mexico Educational Retirement Board
New Mexico
$6.95M -$131K -1,300 -2%
MSRPS
464
Maryland State Retirement & Pension System
Maryland
$6.93M -$1.08M -10,730 -14%
Envestnet Portfolio Solutions
465
Envestnet Portfolio Solutions
Illinois
$6.74M +$661K +6,551 +11%
RWM
466
RBA Wealth Management
California
$6.74M -$58.8K -583 -0.9%
XT
467
XTX Topco
Cayman Islands
$6.71M +$6.71M +66,516 New
SAM
468
Silvercrest Asset Management
New York
$6.62M -$270K -2,674 -4%
Nomura Holdings
469
Nomura Holdings
Japan
$6.61M +$1.48M +14,629 +29%
CM
470
Castleark Management
Illinois
$6.54M +$6.54M +64,870 New
AIM
471
Aigen Investment Management
New York
$6.54M +$6.54M +64,812 New
DFCM
472
Dark Forest Capital Management
Puerto Rico
$6.49M +$4.66M +46,232 +255%
BA
473
Bridgewater Associates
Connecticut
$6.45M -$9.98M -98,959 -61%
FDP
474
Financiere des Professionnels
Quebec, Canada
$6.44M -$1.77M -17,574 -22%
KOCAA
475
Knights of Columbus Asset Advisors
Connecticut
$6.42M -$2.38M -23,577 -27%
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