Who owns Rambus Inc (RMBS)?
307 US mutual funds and ETFs from 153 fund families reported a position in RMBS for the quarter ending 2026-06-30. Against their own report a quarter earlier, 77 raised shares, 70 opened a new position, 130 cut and 89 sold out.
Largest fund families
| Fund family | Funds | Share of fund-held shares |
|---|---|---|
| Ishares Trust | 14 | 28.4% |
| Vanguard Index Funds | 4 | 27.7% |
| Spdr Series Trust | 7 | 4.1% |
| Jpmorgan Trust Ii | 2 | 2.9% |
| Variable Insurance Products Fund Iii | 3 | 2.8% |
| Jnl Series Trust | 11 | 2.4% |
Tracked managers holding RMBS
None of the managers Prior Moves tracks on 13F reports RMBS in its latest filing.
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 RMBS. 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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