Rambus Inc
RMBS- Exchange
- Nasdaq
- Industry
- Semiconductors & Related Devices
- SEC CIK
- 0000917273
In the last 90 days, Rambus Inc insiders filed 0 open-market purchases and 2 sales; 621 institutions reported holding it in 13F filings for Q2 2026, worth $13.3B in total; superinvestors Duquesne Family Office and Maverick Capital hold it.
13F holders, Q4 2022
Institutional positions in Rambus Inc as of Dec 31, 2022. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 303
- +64 vs. Q3 2022
- Shares held
- 91.6M
- −1.84M (−2.0%) vs. Q3 2022
- Total value
- $3.27B
- +$892.4M (+37.5%) vs. Q3 2022
- New holders
- 79
- 83 more added
- Sold out
- 15
- 101 more reduced
2 institutions that held it in Q3 2022 haven't filed for Q4 2022 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 2022: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting RMBS on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 621 | $13.3B |
| Q1 2026 | 557 | $8.83B |
| Q4 2025 | 554 | $9.18B |
| Q3 2025 | 513 | $10.3B |
| Q2 2025 | 459 | $6.22B |
| Q1 2025 | 413 | $5.01B |
| Q4 2024 | 395 | $5.03B |
| Q3 2024 | 376 | $3.94B |
| Q2 2024 | 363 | $5.64B |
| Q1 2024 | 375 | $6.00B |
| Q4 2023 | 400 | $6.62B |
| Q3 2023 | 350 | $5.48B |
| Q2 2023 | 393 | $6.14B |
| Q1 2023 | 337 | $4.81B |
| Q4 2022 | 303 | $3.27B |
| Q3 2022 | 241 | $2.38B |
| Q2 2022 | 253 | $2.07B |
| Q1 2022 | 276 | $2.98B |
| Q4 2021 | 258 | $2.80B |
| Q3 2021 | 236 | $2.07B |
| Q2 2021 | 219 | $2.30B |
| Q1 2021 | 213 | $1.86B |
Institutions, Q4 2022
Shares, value and share of portfolio for each institution holding Rambus Inc; share changes are against Q3 2022.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Tfo-TDC, LLC | 4 | $390 | 0.00% | +4 | New |
| Huntington National Bank | 1 | $36 | 0.00% | 00.0% | Unchanged |
| Clear Street Markets LLC | 1 | $0 | 0.00% | +1 | New |
| Shannon River Fund Management LLC | 0 | $0 | 0.00% | −739,988−100.0% | Sold out |
| Lazard Asset Management LLC | 0 | $0 | 0.00% | −90,396−100.0% | Sold out |
| AlphaCrest Capital Management LLC | 0 | $0 | 0.00% | −61,039−100.0% | Sold out |
| PEAK6 Investments LLC | 0 | $0 | 0.00% | −21,517−100.0% | Sold out |
| Aquila Investment Management LLC | 0 | $0 | 0.00% | −15,000−100.0% | Sold out |
| Algert Global LLC | 0 | $0 | 0.00% | −11,060−100.0% | Sold out |
| Rockland Trust Co | 0 | $0 | 0.00% | −9,992−100.0% | Sold out |
| Householder Group Estate & Retirement Specialist, LLC | 0 | $0 | 0.00% | −4,511−100.0% | Sold out |
| Macquarie Group Ltd | 0 | $0 | 0.00% | 0 | Sold out |
| Brown Brothers Harriman & Co | 0 | $0 | 0.00% | −1,549−100.0% | Sold out |
| Robinson Value Management, Ltd. | 0 | $0 | 0.00% | −500−100.0% | Sold out |
| Bogart Wealth, LLC | 0 | $0 | 0.00% | −500−100.0% | Sold out |
| Meeder Asset Management Inc | 0 | $0 | 0.00% | −207−100.0% | Sold out |
| Tucker Asset Management LLC | 0 | $0 | 0.00% | −35−100.0% | Sold out |
| Stonebridge Capital Advisors LLC | 0 | $0 | 0.00% | −17−100.0% | Sold out |
| New Century Advisors, LLC | – | – | – | – | Not filed |
| Wipfli Financial Advisors LLC, | – | – | – | – | Not filed |