Boston Scientific Corporation (BSX) ownership: Top institutional holder: VANGUARD GROUP INC ($13.32B). 10 recent congressional STOCK Act disclosures. SEC EDGAR first-party data.
| Holder | Shares | Market Value | Reported |
|---|---|---|---|
| VANGUARD GROUP INC | 139685997.00 | $13.32B | 2025-12-31 |
| BlackRock, Inc. | 131822037.00 | $8.27B | 2026-03-31 |
| VANGUARD CAPITAL MANAGEMENT LLC | 96411568.00 | $6.05B | 2026-03-31 |
| FMR LLC | 74226395.00 | $4.66B | 2026-03-31 |
| STATE STREET CORP | 67986847.00 | $4.27B | 2026-03-31 |
| JPMORGAN CHASE & CO | 33350157.00 | $2.10B | 2026-03-31 |
| GEODE CAPITAL MANAGEMENT, LLC | 33285757.00 | $2.08B | 2026-03-31 |
| PRIMECAP MANAGEMENT CO/CA/ | 32529774.00 | $2.04B | 2026-03-31 |
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Institutional data from SEC Form 13F. Insider data from SEC Form 4. Congressional data from STOCK Act disclosures. Not personalized investment advice.