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, Q3 2025
Institutional positions in Rambus Inc as of Sep 30, 2025. 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
- 513
- +62 vs. Q2 2025
- Shares held
- 98.8M
- +3.82M (+4.0%) vs. Q2 2025
- Total value
- $10.3B
- +$4.21B (+69.3%) vs. Q2 2025
- New holders
- 123
- 169 more added
- Sold out
- 61
- 163 more reduced
8 institutions that held it in Q2 2025 haven't filed for Q3 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q2 2025: 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, Q3 2025
Shares, value and share of portfolio for each institution holding Rambus Inc; share changes are against Q2 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Jennison Associates LLC | 5,406 | $563.3K | 0.00% | +5,406 | New |
| Global X Japan Co., Ltd. | 5,385 | $561.1K | 0.05% | +5,385 | New |
| Polymer Capital Management (US) LLC | 5,374 | $560.0K | 0.07% | +5,374 | New |
| O'Shaughnessy Asset Management, LLC | 5,342 | $556.6K | 0.00% | +2,008+60.2% | Added |
| Alps Advisors Inc | 5,297 | $551.9K | 0.00% | −1,373−20.6% | Reduced |
| Sigma Planning Corp | 5,243 | $546.3K | 0.02% | +5,243 | New |
| AE Wealth Management LLC | 5,240 | $546.0K | 0.00% | +499+10.5% | Added |
| Rockland Trust Co | 4,996 | $520.6K | 0.02% | 00.0% | Unchanged |
| K.J. Harrison & Partners Inc | 5,000 | $518.5K | 0.07% | −2,500−33.3% | Reduced |
| M&T Bank Corp | 4,961 | $517.1K | 0.00% | −21−0.4% | Reduced |
| Nisa Investment Advisors, LLC | 4,918 | $512.5K | 0.00% | +675+15.9% | Added |
| Blair William & Co | 4,900 | $510.6K | 0.00% | +360+7.9% | Added |
| Swiss Life Asset Management Ltd | 4,886 | $509.1K | 0.00% | +4,886 | New |
| TSFG, LLC | 4,806 | $501.0K | 0.08% | +4,310+869.0% | Added |
| Keybank National Association | 4,715 | $491.3K | 0.00% | 00.0% | Unchanged |
| CoreCap Advisors, LLC | 4,697 | $489.4K | 0.02% | +4,694+156,466.7% | Added |
| GAMMA Investing LLC | 4,680 | $487.7K | 0.03% | +249+5.6% | Added |
| Northwestern Mutual Wealth Management Co | 4,611 | $480.5K | 0.00% | −1,983−30.1% | Reduced |
| Empowered Funds, LLC | 4,450 | $463.7K | 0.00% | −3,012−40.4% | Reduced |
| WBI Investments | 4,356 | $453.9K | 0.12% | +4,356 | New |
| Atom Investors LP | 4,292 | $447.2K | 0.03% | +4,292 | New |
| Larson Financial Group LLC | 4,275 | $445.5K | 0.02% | +4,027+1,623.8% | Added |
| Merit Financial Group, LLC | 4,060 | $423.1K | 0.00% | −25−0.6% | Reduced |
| Bank Julius Baer & Co. Ltd, Zurich | 4,026 | $419.5K | 0.00% | −3−0.1% | Reduced |
| NJ State Employees Deferred Compensation Plan | 4,000 | $416.8K | 0.05% | 00.0% | Unchanged |
| VGI Partners Ltd | 4,000 | $416.8K | 0.03% | +4,000 | New |
| City Center Advisors, LLC | 3,930 | $409.5K | 0.40% | −180−4.4% | Reduced |
| Shelton Capital Management | 3,904 | $406.8K | 0.01% | 00.0% | Unchanged |
| Cresset Asset Management, LLC | 3,901 | $406.5K | 0.00% | +619+18.9% | Added |
| Forum Financial Management, LP | 3,891 | $405.4K | 0.01% | +461+13.4% | Added |
| Truvestments Capital LLC | 3,791 | $395.0K | 0.07% | −3,615−48.8% | Reduced |
| Tower Research Capital LLC (TRC) | 3,775 | $393.4K | 0.01% | −11,826−75.8% | Reduced |
| Meeder Advisory Services, Inc. | 3,769 | $392.7K | 0.02% | +52+1.4% | Added |
| Massar Capital Management, LP | 3,600 | $375.1K | 0.13% | +3,600 | New |
| Two Sigma Securities, LLC | 3,502 | $364.9K | 0.05% | +3,502 | New |
| Oarsman Capital, Inc. | 3,420 | $356.4K | 0.05% | −480−12.3% | Reduced |
| CIBC Asset Management Inc | 3,410 | $355.3K | 0.00% | 00.0% | Unchanged |
| HHM Wealth Advisors, LLC | 3,335 | $347.5K | 0.04% | −29−0.9% | Reduced |
| Fifth Third Wealth Advisors LLC | 3,335 | $347.5K | 0.01% | +39+1.2% | Added |
| Ashton Thomas Private Wealth, LLC | 3,335 | $347.5K | 0.01% | +98+3.0% | Added |
| Gotham Asset Management, LLC | 3,305 | $344.4K | 0.00% | −1,628−33.0% | Reduced |
| Ethic Inc. | 3,151 | $328.3K | 0.01% | −885−21.9% | Reduced |
| Pinpoint Asset Management (Singapore) Pte. Ltd. | 3,014 | $314.1K | 0.06% | +3,013+301,300.0% | Added |
| Adams Wealth Management | 3,018 | $312.7K | 0.07% | +3,018 | New |
| CacheTech Inc. | 3,018 | $312.7K | 0.06% | +3,018 | New |
| KBC Group NV | 2,959 | $308.0K | 0.00% | 00.0% | Unchanged |
| Shell Asset Management Co | 2,930 | $305.0K | 0.03% | −1,685−36.5% | Reduced |
| Smartleaf Asset Management LLC | 2,931 | $304.8K | 0.02% | +273+10.3% | Added |
| Truist Financial Corp | 2,906 | $302.8K | 0.00% | +2,906 | New |
| Public Employees Retirement System of Ohio | 2,890 | $301.1K | 0.00% | −41,661−93.5% | Reduced |
| Journey Strategic Wealth LLC | 2,875 | $299.6K | 0.01% | −564−16.4% | Reduced |
| Vise Technologies, Inc. | 2,846 | $296.6K | 0.01% | +2,846 | New |
| Mitsubishi UFJ Trust & Banking Corp | 2,784 | $290.1K | 0.00% | −1,347−32.6% | Reduced |
| Greenleaf Trust | 2,737 | $285.2K | 0.00% | +2,737 | New |
| Gagnon Securities LLC | 2,711 | $282.5K | 0.06% | +2,711 | New |
| United Capital Financial Advisers, LLC | 2,693 | $280.6K | 0.00% | +2,693 | New |
| D.A. Davidson & Co. | 2,663 | $277.5K | 0.00% | +2,663 | New |
| Ewa, LLC | 2,638 | $274.9K | 0.08% | +2,638 | New |
| Everence Capital Management Inc | 2,590 | $270.0K | 0.02% | +2,590 | New |
| JDH Wealth Management, LLC | 2,572 | $268.0K | 0.19% | +2,572 | New |
| Point72 Europe (London) LLP | 2,570 | $267.7K | 0.01% | +2,570 | New |
| Net Worth Advisory Group | 2,532 | $263.8K | 0.08% | +2,532 | New |
| Requisite Capital Management, LLC | 2,522 | $262.8K | 0.04% | +2,522 | New |
| Trust Point Inc. | 2,517 | $262.3K | 0.02% | +2,517 | New |
| Clearstead Advisors, LLC | 2,512 | $261.8K | 0.00% | −592−19.1% | Reduced |
| Meiji Yasuda Asset Management Co Ltd. | 2,500 | $260.5K | 0.01% | +2,500 | New |
| Blue Barn Wealth, LLC | 2,500 | $260.5K | 0.11% | +2,500 | New |
| Corient IA LLC | 2,500 | $260.5K | 0.19% | +2,500 | New |
| First Manhattan Co | 2,495 | $260.0K | 0.00% | +2,495 | New |
| Himension Fund | 2,470 | $257.4K | 0.02% | +2,470 | New |
| Keel Point, LLC | 2,430 | $253.2K | 0.02% | +2,430 | New |
| VisionPoint Advisory Group, LLC | 2,402 | $250.3K | 0.05% | +2,402 | New |
| Parallel Advisors, LLC | 2,383 | $248.3K | 0.00% | +503+26.8% | Added |
| Pinnacle Wealth Planning Services, Inc. | 2,273 | $236.8K | 0.03% | +2,273 | New |
| Global Retirement Partners, LLC | 2,265 | $236.0K | 0.01% | +339+17.6% | Added |
| St Germain D J Co Inc | 2,245 | $233.9K | 0.01% | +2,245 | New |
| Rockefeller Capital Management L.P. | 2,195 | $228.7K | 0.00% | +2,195 | New |
| Hollencrest Capital Management | 2,176 | $226.7K | 0.01% | +2,176 | New |
| Krilogy Financial LLC | 2,049 | $222.5K | 0.01% | +2,049 | New |
| Kestra Advisory Services, LLC | 2,129 | $221.8K | 0.00% | +2,129 | New |
| NewEdge Wealth, LLC | 2,037 | $221.2K | 0.00% | +2,037 | New |
| MeadowBrook Investment Advisors LLC | 2,120 | $220.9K | 0.19% | −1,660−43.9% | Reduced |
| Quest Partners LLC | 2,071 | $215.8K | 0.01% | −19,986−90.6% | Reduced |
| Hilltop Holdings Inc. | 2,049 | $213.5K | 0.01% | +2,049 | New |
| Callan Family Office, LLC | 2,034 | $211.9K | 0.01% | −1,608−44.2% | Reduced |
| Global Trust Asset Management, LLC | 2,030 | $211.5K | 0.10% | +2,030 | New |
| Vestmark Advisory Solutions, Inc. | 2,029 | $211.4K | 0.00% | +2,029 | New |
| DRW Securities, LLC | 2,026 | $211.4K | 0.01% | +2,026 | New |
| Oak Ridge Investments LLC | 2,023 | $210.8K | 0.01% | +2,023 | New |
| Wiley Bros.-Aintree Capital, LLC | 1,986 | $207.7K | 0.00% | +1,986 | New |
| Snowden Capital Advisors LLC | 1,992 | $207.6K | 0.01% | +1,992 | New |
| Johnson Investment Counsel Inc | 1,986 | $206.9K | 0.00% | +1,986 | New |
| Juncture Wealth Strategies, LLC | 1,980 | $206.3K | 0.07% | +1,980 | New |
| Chase Investment Counsel Corp | 1,973 | $205.0K | 0.06% | +1,973 | New |
| Colony Group, LLC | 1,961 | $204.3K | 0.00% | −1,994−50.4% | Reduced |
| Jones Financial Companies LLLP | 1,964 | $201.5K | 0.00% | +697+55.0% | Added |
| Oppenheimer Asset Management Inc. | 1,928 | $200.9K | 0.00% | +1,928 | New |
| EverSource Wealth Advisors, LLC | 1,904 | $198.4K | 0.01% | +1,127+145.0% | Added |
| National Bank of Canada | 1,859 | $193.6K | 0.00% | +1,859 | New |
| Stonehage Fleming Financial Services Holdings Ltd | 1,634 | $170.3K | 0.00% | 00.0% | Unchanged |