Rambus Inc (RMBS)
Technology
Semiconductors
91.00 $
+1.6%
vs. previous close
Closing price · As of: 31. Jul 2026
Who owns Rambus Inc (RMBS)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 99.3% of the shares are freely tradable; institutional investors hold 99.4%.
Ownership Structure
Institutional ownership
Share of the stock held by institutional investors (funds, banks, insurers) according to regulatory filings.
99.4%
Insiders
Share of the stock held by the executives, founders and major shareholders of the company itself.
0.8%
Float
Share of stock freely tradable on the market — not locked up in the hands of founders, insiders, or major shareholders.
99.3%
Short % of float
Shares sold short as a percentage of the freely tradable float — high values signal many bets on falling prices.
9.6%
Shares Outstanding
Total number of shares issued. Price times share count gives market cap.
108Mio.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| BlackRock Inc | 15.08 | 16,305,306 | +0.2 | 03/31/2026 |
| Vanguard Group Inc | 11.37 | 12,290,929 | -3.2 | 12/31/2025 |
| Vanguard Portfolio Management, LLC | 6.14 | 6,644,320 | +0.0 | 03/31/2026 |
| Amvescap Plc. | 6.01 | 6,499,048 | +56.7 | 03/31/2026 |
| Vanguard Capital Management, LLC | 4.46 | 4,827,854 | +0.0 | 03/31/2026 |
| State Street Corp | 4.04 | 4,373,617 | +2.9 | 03/31/2026 |
| T. Rowe Price Associates, Inc. | 3.12 | 3,376,689 | -37.3 | 03/31/2026 |
| FMR Inc | 3.07 | 3,318,449 | +109.1 | 03/31/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| iShares Core S&P Mid-Cap ETF | 3.38 | 3,651,990 | +0.0 | 05/29/2026 |
| Vanguard Total Stock Mkt Idx Inv | 3.18 | 3,437,118 | +0.2 | 04/30/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Data as of: July 31, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.