Filing Flows › Rambus (RMBS) › Who owns the stock
Who owns Rambus (RMBS) stock
576 funds reported Rambus (RMBS) shares in their latest 13F filings, worth $13.6B in all. The largest holder is BlackRock ($1.9B). Last quarter 286 funds added to their stakes and 270 cut them.
Largest holders (13F)
| Fund | Shares | Value | Change | Quarter |
|---|---|---|---|---|
| BlackRock | 13,964,477 | $1.9B | decrease | 2026-06-30 |
| FMR LLC | 10,460,026 | $1.4B | increase | 2026-06-30 |
| Vanguard Group | 12,290,929 | $1.1B | decrease | 2025-12-31 |
| Invesco | 6,632,458 | $880M | increase | 2026-06-30 |
| Vanguard Portfolio Management LLC | 6,068,516 | $806M | decrease | 2026-06-30 |
| Vanguard Capital Management LLC | 4,874,385 | $647M | increase | 2026-06-30 |
| State Street | 3,915,113 | $519M | decrease | 2026-06-30 |
| Price T Rowe Associates | 3,334,512 | $443M | decrease | 2026-06-30 |
| Geode Capital Management, LLC | 2,297,660 | $305M | decrease | 2026-06-30 |
| Dimensional Fund Advisors LP | 1,719,400 | $228M | decrease | 2026-06-30 |
| Swedbank AB | 1,646,500 | $219M | increase | 2026-06-30 |
| Morgan Stanley | 1,444,281 | $192M | increase | 2026-06-30 |
| Neuberger Berman Group LLC | 1,311,777 | $173M | increase | 2026-06-30 |
| Bank of America | 1,218,726 | $162M | decrease | 2026-06-30 |
| AQR Capital Management LLC | 1,211,009 | $152M | decrease | 2026-06-30 |
Rambus' latest quarter
Rambus, Q3 2026: revenue $218M (+22% year over year), operating margin 38.3%, net earnings $74.6M, operating cash flow $102M. The chart follows the revenue to costs, profit and cash.
Questions
Who owns the most RMBS stock?
By the latest 13F filings: BlackRock ($1.9B); FMR LLC ($1.4B); Vanguard Group ($1.1B); Invesco ($880M); Vanguard Portfolio Management LLC ($806M).
What is the short interest in RMBS?
4,287,851 shares were sold short at the 2026-10-15 settlement, -10.38% of the float.
Updated Nov 8, 2026. Read automatically from SEC filings and public data; errors are possible. Not investment advice.