Rambus Inc. (RMBS) ownership: Top institutional holder: BlackRock, Inc. ($1.40B). Insider activity: Net Seller (1 buys, 19 sells). 1 recent congressional STOCK Act disclosures. SEC EDGAR first-party data.
| Holder | Shares | Market Value | Reported |
|---|---|---|---|
| BlackRock, Inc. | 16305306.00 | $1.40B | 2026-03-31 |
| VANGUARD GROUP INC | 12290929.00 | $1.13B | 2025-12-31 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 6644320.00 | $571.61M | 2026-03-31 |
| Invesco Ltd. | 6499048.00 | $559.11M | 2026-03-31 |
| VANGUARD CAPITAL MANAGEMENT LLC | 4827854.00 | $415.34M | 2026-03-31 |
| STATE STREET CORP | 4373617.00 | $376.26M | 2026-03-31 |
| FMR LLC | 3318449.00 | $285.49M | 2026-03-31 |
| GEODE CAPITAL MANAGEMENT, LLC | 3124495.00 | $268.84M | 2026-03-31 |
| Insider | Transaction | Value | Date |
|---|---|---|---|
| Sell | null | 2026-06-03 | |
| Sell | null | 2026-06-02 | |
| Sell | null | 2026-06-02 | |
| Sell | null | 2026-06-01 | |
| Sell | null | 2026-05-26 | |
| Sell | null | 2026-05-26 | |
| Sell | null | 2026-05-26 | |
| Sell | null | 2026-05-22 |
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Institutional data from SEC Form 13F. Insider data from SEC Form 4. Congressional data from STOCK Act disclosures. Not personalized investment advice.