Who owns Boston Scientific Corp (BSX)?
502 US mutual funds and ETFs from 199 fund families reported a position in BSX for the quarter ending 2026-06-30. Against their own report a quarter earlier, 193 raised shares, 52 opened a new position, 195 cut and 104 sold out.
Largest fund families
| Fund family | Funds | Share of fund-held shares |
|---|---|---|
| Vanguard Index Funds | 5 | 34.2% |
| Ishares Trust | 17 | 11.6% |
| Vanguard Chester Funds | 1 | 10.2% |
| Janus Investment Fund | 6 | 3.9% |
| Select Sector Spdr Trust | 1 | 3.5% |
| Vanguard Horizon Funds | 1 | 2.9% |
Tracked managers holding BSX
| Investor | Book weight |
|---|---|
| Two Sigma | 0.6% |
Source: SEC Form N-PORT, which funds file about 60 days after quarter end, and the latest 13F filings. Share counts, not trades: a change can reflect fund inflows or outflows rather than a decision about BSX. A record of holdings, not a forecast and not investment advice. See all owner pages or the forecast board for the names our model ranks.
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