BOSTON SCIENTIFIC CORP

$BSX
13F holders
1,664
Net 13F flow · Q
Insider buys · 90d
0
Insider net · 90d
Congress · 90d
0
Convergence

Institutional holders

Top 10 of 1,664 · Source: 13F-HR
01
Axa S.a.
02
State Street
03
D. E. Shaw & Co., Inc.
04
First Financial Bankshares Inc.
05
Primecap Management CO
06
Commerce Bank
07
ProShare Advisors LLC
08
Dorsal Capital Management, LP
09
Thomas H Lee Partners LP
10
Laird Norton Wetherby Wealth Management, LLC

Each fund name links to that filer's expert page. Share counts and per-fund weights are pending the 13F ingest fix (portfolios_expertholding.units is currently mis-populated — see the same caveat on the fund detail page's holdings table). Quarter-over-quarter delta ships with the metrics pipeline.

See all 1,664 13F holders · Pro →

Smart Money · top-200 alpha cohort

43 holders · Q1 2026

$BSX is held by 43 managers from the Top-Performer cohort as of Q1 2026. Position weights range from 0.00% to 2.19%, with an average of 0.33% of portfolio. Largest holder: Bellevue Group AG at 2.19%. A weekly Smart-Money commentary for this ticker has not been generated yet this batch — the table below shows the full cohort positioning.

01
Bellevue Group AG
2.19% ↓ 0.6pp
α +12.2pts
02
Sectoral Asset Management Inc.
1.81% NEW
α +39.3pts
03
Oxford Asset Management LLP
1.60% ↑ +1.4pp
α +10.3pts
04
Vestal Point Capital, LP
1.40% NEW
α +16.2pts
05
Costello Asset Management, INC
1.17% ↓ 0.7pp
α +14.3pts
06
Legacy Wealth Management, LLC / MS
0.93% NEW
α +14.9pts
07
Caption Management, LLC
0.69% held
α +15.5pts
08
Bradley Foster & Sargent INC
0.61% NEW
α +11.1pts
09
United Super Pty Ltd in its capacity as Trustee for the Construction & Building Unions Superannuation Fund
0.58% NEW
α +13.4pts
10
Aigen Investment Management, LP
0.44% NEW
α +50.5pts
11
Banque Pictet & Cie SA
0.41% NEW
α +10.3pts
12
Platinum Investment Management Ltd.
0.28% NEW
α +25.6pts
13
Voloridge Investment Management, LLC
0.27% held
α +15.5pts
14
Wellington Management Group LLP
0.22% held
α +10.5pts
15
WINTON GROUP Ltd
0.19% NEW
α +27.0pts
16
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC
0.18% NEW
α +27.5pts
17
Banco Santander, S.A.
0.15% NEW
α +12.6pts
18
Connor, Clark & Lunn Investment Management Ltd.
0.12% held
α +12.3pts
19
Erste Asset Management GmbH
0.12% NEW
α +33.4pts
20
Courier Capital LLC
0.11% NEW
α +14.9pts
21
Freemont Management S.A.
0.09% held
α +20.1pts
22
Rokos Capital Management LLP
0.09% held
α +12.2pts
23
Citigroup Inc.
0.07% held
α +26.3pts
24
LM Advisors LLC
0.07% held
α +15.5pts
25
Nisa Investment Advisors, LLC
0.06% held
α +16.6pts
26
Eventide Asset Management, LLC
0.04% held
α +22.5pts
27
Fulton Bank, N.a.
0.04% held
α +23.8pts
28
ADAR1 Capital Management, LLC
0.04% held
α +74.0pts
29
Venture Visionary Partners LLC
0.04% held
α +10.3pts
30
Level Financial Advisors
0.03% held
α +30.9pts
31
Triasima Portfolio Management inc.
0.03% held
α +15.7pts
32
Fiduciary Alliance LLC
0.03% held
α +16.8pts
33
Principal Securities, Inc.
0.02% held
α +21.3pts
34
Quarry LP
0.02% held
α +10.6pts
35
Svb Wealth LLC
0.01% held
α +29.6pts
36
GM Advisory Group, LLC
0.01% held
α +16.5pts
37
Choate Investment Advisors
0.01% held
α +13.8pts
38
New Age Alpha Advisors, LLC
0.01% held
α +10.8pts
39
Fidelis Capital Partners, LLC
0.00% held
α +19.5pts
40
Corsicana & Co.
0.00% held
α +20.0pts
41
ANTIPODES PARTNERS Ltd
0.00% held
α +10.8pts
42
Johnson Financial Group, Inc.
0.00% held
α +14.7pts
43
Pittenger & Anderson Inc.
0.00% held
α +21.3pts

Smart Money shows holdings from our Top-Performer cohort — the 200 highest-alpha manager_13f funds in our universe. Position weight (current quarter) and QoQ delta versus prior quarter. α is the manager's annual alpha vs benchmark.

Insider activity · last 90 days

No insider activity

No Form 4 filings on record for $BSX in the recent window.

Congress trades · last 90 days

33 disclosures · STOCK Act
House · California · Traded Feb 10
BOUGHT
$1K–$15K
Mar 9STOCK
House · California · Traded Jan 30
BOUGHT
$1K–$15K
Feb 13STOCK
Senate · Oklahoma · Traded Dec 29
BOUGHT
$15K–$50K
Jan 16STOCK
Senate · Arkansas · Traded Dec 17
SOLD
$1K–$15K
Jan 13STOCK
House · California · Traded Dec 24
SOLD
$1K–$15K
Jan 12STOCK
House · California · Traded Nov 18
BOUGHT
$1K–$15K
Dec 15STOCK
House · Michigan · Traded Oct 31
SOLD
$1K–$15K
Nov 21STOCK
House · Michigan · Traded Oct 30
BOUGHT
$1K–$15K
Nov 21STOCK
House · Michigan · Traded Oct 30
SOLD
$1K–$15K
Nov 21STOCK
House · California · Traded Oct 17
BOUGHT
$1K–$15K
Nov 18STOCK
See full $BSX Congress history →

Convergence · Pattern Engine ships in v1.1

30-day window
In development

Convergence detection for $BSX lands with the Pattern Engine.

Once the Pattern Engine ships, this section will surface every active convergence event involving $BSX — the institutional managers and Congress members on the same name, the 30-day window, and the combined position size.

Source data: SEC EDGAR · 13F-HR · Form 4 · CapitolTrades · Last refreshed 09:37 UTC.