Who owns Macom Technology Solutions H (MTSI)?
362 US mutual funds and ETFs from 173 fund families reported a position in MTSI for the quarter ending 2026-06-30. Against their own report a quarter earlier, 100 raised shares, 60 opened a new position, 167 cut and 31 sold out.
Largest fund families
| Fund family | Funds | Share of fund-held shares |
|---|---|---|
| Vanguard Index Funds | 4 | 23.9% |
| Ishares Trust | 13 | 23.4% |
| T. Rowe Price Mid-Cap Growth Fund, Inc. | 1 | 5.2% |
| Smallcap World Fund Inc | 1 | 4.7% |
| Spdr Series Trust | 7 | 2.9% |
| Carillon Series Trust | 4 | 2.0% |
Tracked managers holding MTSI
| Investor | Book weight |
|---|---|
| Whale Rock | 3.0% |
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 MTSI. 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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