Boston Scientific Corp. – Investors and Politicians Who Own It
BSX
Investors who own it
12 tracked investors, $914.8M in shares, each from their latest 13F.
| Investor | Value | Share of portfolio |
|---|---|---|
Farallon Capital ManagementQ2 2026 | $449M | 2.07% |
Lee AinslieMaverick Capital, Q2 2026 | $253.4M | 2.24% |
| $169M | 0.11% | |
Ray DalioBridgewater Associates, Q2 2026 | $18.9M | 0.08% |
Joseph EdelmanPerceptive Advisors, Q2 2026 | $10.7M | 0.16% |
Larry RobbinsGlenview Capital Management, Q2 2026 | $4.8M | 0.09% |
Dodge & CoxQ2 2026 | $3.7M | 0.00% |
Mario GabelliGAMCO Investors, Q2 2026 | $2.8M | 0.02% |
Barry RitholtzRitholtz Wealth Management, Q2 2026 | $1M | 0.01% |
Jeremy GranthamGMO (Grantham Mayo Van Otterloo), Q2 2026 | $930.4K | 0.00% |
Daniel SchneebergerADAR1 Capital Management, Q2 2026 | $320.1K | 0.01% |
Polen CapitalQ2 2026 | $202.7K | 0.00% |
Politicians who own it
Estimated from annual disclosures and trades; values are rough estimates.
| Politician | Est. value | Share of portfolio |
|---|---|---|
Gilbert Ray Cisneros, Jr.D-CA · House | $109.9K | 0.26% |
Markwayne MullinR-OK · Senate | $46K | 0.45% |
Robert P. Bresnahan, Jr.R-PA · House | $14.2K | 0.08% |
Julie JohnsonD-TX · House | $14.2K | 0.08% |
Alan ArmstrongR-OK · Senate | $4.8K | 0.10% |
Michael A. RulliR-OH · House | $3.5K | 0.37% |
John J. McGuire IIIR-VA · House | $3.5K | 0.42% |
Investors buying and selling
| Investor | Action | Shares now |
|---|---|---|
| John Armitage | New | 1,640,956 |
| Anand Parekh | Sold out | 0 |
| Andreas Halvorsen | Added +28% | 3,045,764 |
| Farallon Capital Management | Added +5.8% | 3,981,057 |
| SurgoCap Partners | Added +2.8% | 2,724,969 |
| Castle Hook Partners | Reduced −30% | 579,148 |
| Joseph Edelman | Added +115% | 280,000 |
| George Soros | Sold out | 0 |
| National Pension Service (Korea) | Reduced −4.2% | 3,375,933 |
| Ray Dalio | Reduced −25% | 48,284 |
| Mario Gabelli | Reduced −1.1% | 125,199 |
| Dodge & Cox | Reduced −1.4% | 90,385 |
| Barry Ritholtz | Added +3.5% | 36,284 |
Politicians trading it
Latest Congress trades disclosed under the STOCK Act; amounts are ranges.
| Politician | Action | Traded |
|---|---|---|
Kevin HernJointR-OK · House | Sold$50K–$100K | Sep 9, 2026disclosed Sep 25, 2026 |
Kevin HernJointR-OK · House | Sold part$50K–$100K | Sep 4, 2026disclosed Sep 25, 2026 |
Kevin HernChildR-OK · House | Sold$1K–$15K | Sep 3, 2026disclosed Sep 25, 2026 |
Kevin HernChildR-OK · House | Sold$1K–$15K | Sep 3, 2026disclosed Sep 25, 2026 |
Kevin HernChildR-OK · House | Sold$1K–$15K | Sep 3, 2026disclosed Sep 25, 2026 |
Kevin HernJointR-OK · House | Sold$15K–$50K | Aug 31, 2026disclosed Sep 25, 2026 |
Gilbert Ray Cisneros, Jr.D-CA · House | Bought$1K–$15K | Aug 18, 2026disclosed Sep 10, 2026 |
Gilbert Ray Cisneros, Jr.D-CA · House | Bought$1K–$15K | Jun 5, 2026disclosed Jul 2, 2026 |
Gilbert Ray Cisneros, Jr.D-CA · House | Sold part$1K–$15K | Jun 5, 2026disclosed Jul 2, 2026 |
John BoozmanJointR-AR · Senate | Sold part$1K–$15K | Jun 4, 2026disclosed Jul 13, 2026 |
Gilbert Ray Cisneros, Jr.D-CA · House | Bought$1K–$15K | May 29, 2026disclosed Jun 8, 2026 |
Gilbert Ray Cisneros, Jr.D-CA · House | Bought$1K–$15K | May 19, 2026disclosed Jun 8, 2026 |
Gilbert Ray Cisneros, Jr.D-CA · House | Bought$1K–$15K | May 11, 2026disclosed Jun 8, 2026 |
Alan ArmstrongR-OK · Senate | Bought$1K–$15K | Mar 27, 2026disclosed Jul 21, 2026 |
Gilbert Ray Cisneros, Jr.D-CA · House | Bought$1K–$15K | Feb 10, 2026disclosed Mar 9, 2026 |
Gilbert Ray Cisneros, Jr.D-CA · House | Bought$1K–$15K | Jan 30, 2026disclosed Feb 13, 2026 |
Markwayne MullinJointR-OK · Senate | Bought$15K–$50K | Dec 29, 2025disclosed Jan 16, 2026 |
Gilbert Ray Cisneros, Jr.D-CA · House | Sold part$1K–$15K | Dec 24, 2025disclosed Jan 12, 2026 |
John BoozmanJointR-AR · Senate | Sold part$1K–$15K | Dec 17, 2025disclosed Jan 13, 2026 |
Gilbert Ray Cisneros, Jr.D-CA · House | Bought$1K–$15K | Nov 18, 2025disclosed Dec 15, 2025 |
Lisa C. McClainSpouseR-MI · House | Sold$1K–$15K | Oct 31, 2025disclosed Nov 21, 2025 |
Lisa C. McClainSpouseR-MI · House | Sold$1K–$15K | Oct 30, 2025disclosed Nov 21, 2025 |
Lisa C. McClainSpouseR-MI · House | Bought$1K–$15K | Oct 30, 2025disclosed Nov 21, 2025 |
Kevin HernJointR-OK · House | Sold part$15K–$50K | Oct 28, 2025disclosed Nov 16, 2025 |
Gilbert Ray Cisneros, Jr.D-CA · House | Bought$1K–$15K | Oct 17, 2025disclosed Nov 18, 2025 |
Val T. HoyleSpouseD-OR · House | Sold$1K–$15K | Sep 23, 2025disclosed Oct 10, 2025 |
Lisa C. McClainSpouseR-MI · House | Sold part$1K–$15K | Aug 4, 2025disclosed Sep 12, 2025 |
Gilbert Ray Cisneros, Jr.D-CA · House | Sold part$1K–$15K | Jul 31, 2025disclosed Aug 14, 2025 |
Gilbert Ray Cisneros, Jr.D-CA · House | Sold part$1K–$15K | Jun 26, 2025disclosed Jul 10, 2025 |
Gilbert Ray Cisneros, Jr.D-CA · House | Sold part$1K–$15K | Jun 11, 2025disclosed Jul 10, 2025 |
Gilbert Ray Cisneros, Jr.D-CA · House | Sold part$1K–$15K | May 13, 2025disclosed Jun 6, 2025 |
Jefferson ShreveR-IN · House | Sold$15K–$50K | May 12, 2025disclosed Jun 22, 2025 |
Gilbert Ray Cisneros, Jr.D-CA · House | Sold part$1K–$15K | Apr 28, 2025disclosed May 6, 2025 |
Bruce WestermanR-AR · House | Sold$1K–$15K | Apr 21, 2025disclosed May 12, 2025 |
Gilbert Ray Cisneros, Jr.D-CA · House | Sold part$1K–$15K | Mar 17, 2025disclosed Apr 7, 2025 |
Bruce WestermanR-AR · House | Bought$1K–$15K | Mar 3, 2025disclosed Apr 16, 2025 |
Gilbert Ray Cisneros, Jr.D-CA · House | Sold part$1K–$15K | Feb 24, 2025disclosed Mar 6, 2025 |
John BoozmanJointR-AR · Senate | Bought$1K–$15K | Feb 13, 2025disclosed Mar 6, 2025 |
Lisa C. McClainSpouseR-MI · House | Bought$1K–$15K | Dec 11, 2024disclosed Aug 13, 2025 |
Val T. HoyleSpouseD-OR · House | Bought$1K–$15K | Oct 29, 2024disclosed Sep 12, 2025 |