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; 620 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 | 620 | $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 |
|---|---|---|---|---|---|
| Umb Bank N A | 1,195 | $124.5K | 0.00% | +10+0.8% | Added |
| MAI Capital Management | 1,212 | $126.3K | 0.00% | −65−5.1% | Reduced |
| Rakuten Securities, Inc. | 1,247 | $129.9K | 0.05% | +1,140+1,065.4% | Added |
| Picton Mahoney Asset Management | 1,285 | $134.0K | 0.00% | +1,285 | New |
| Signaturefd, LLC | 1,298 | $135.3K | 0.00% | +10+0.8% | Added |
| Versant Capital Management, Inc | 1,304 | $135.9K | 0.02% | 00.0% | Unchanged |
| SBI Securities Co., Ltd. | 1,325 | $138.1K | 0.00% | +1,279+2,780.4% | Added |
| Ronald Blue Trust, Inc. | 1,387 | $144.5K | 0.00% | −39−2.7% | Reduced |
| Leonteq Securities AG | 1,417 | $147.7K | 0.01% | +1,281+941.9% | Added |
| Hantz Financial Services, Inc. | 1,475 | $154.0K | 0.00% | +836+130.8% | Added |
| Harbour Investments, Inc. | 1,522 | $158.6K | 0.00% | 00.0% | Unchanged |
| Fifth Third Bancorp | 1,528 | $159.2K | 0.00% | +31+2.1% | Added |
| Allworth Financial LP | 1,601 | $166.8K | 0.00% | +121+8.2% | Added |
| Stonehage Fleming Financial Services Holdings Ltd | 1,634 | $170.3K | 0.00% | 00.0% | Unchanged |
| National Bank of Canada | 1,859 | $193.6K | 0.00% | +1,859 | New |
| EverSource Wealth Advisors, LLC | 1,904 | $198.4K | 0.01% | +1,127+145.0% | Added |
| Oppenheimer Asset Management Inc. | 1,928 | $200.9K | 0.00% | +1,928 | New |
| Jones Financial Companies LLLP | 1,964 | $201.5K | 0.00% | +697+55.0% | Added |
| Colony Group, LLC | 1,961 | $204.3K | 0.00% | −1,994−50.4% | Reduced |
| Chase Investment Counsel Corp | 1,973 | $205.0K | 0.06% | +1,973 | New |
| Juncture Wealth Strategies, LLC | 1,980 | $206.3K | 0.07% | +1,980 | New |
| Johnson Investment Counsel Inc | 1,986 | $206.9K | 0.00% | +1,986 | New |
| Snowden Capital Advisors LLC | 1,992 | $207.6K | 0.01% | +1,992 | New |
| Wiley Bros.-Aintree Capital, LLC | 1,986 | $207.7K | 0.00% | +1,986 | New |
| Oak Ridge Investments LLC | 2,023 | $210.8K | 0.01% | +2,023 | New |
| DRW Securities, LLC | 2,026 | $211.4K | 0.01% | +2,026 | New |
| Vestmark Advisory Solutions, Inc. | 2,029 | $211.4K | 0.00% | +2,029 | New |
| Global Trust Asset Management, LLC | 2,030 | $211.5K | 0.10% | +2,030 | New |
| Callan Family Office, LLC | 2,034 | $211.9K | 0.01% | −1,608−44.2% | Reduced |
| Hilltop Holdings Inc. | 2,049 | $213.5K | 0.01% | +2,049 | New |
| Quest Partners LLC | 2,071 | $215.8K | 0.01% | −19,986−90.6% | Reduced |
| MeadowBrook Investment Advisors LLC | 2,120 | $220.9K | 0.19% | −1,660−43.9% | Reduced |
| NewEdge Wealth, LLC | 2,037 | $221.2K | 0.00% | +2,037 | New |
| Kestra Advisory Services, LLC | 2,129 | $221.8K | 0.00% | +2,129 | New |
| Krilogy Financial LLC | 2,049 | $222.5K | 0.01% | +2,049 | New |
| Hollencrest Capital Management | 2,176 | $226.7K | 0.01% | +2,176 | New |
| Rockefeller Capital Management L.P. | 2,195 | $228.7K | 0.00% | +2,195 | New |
| St Germain D J Co Inc | 2,245 | $233.9K | 0.01% | +2,245 | New |
| Global Retirement Partners, LLC | 2,265 | $236.0K | 0.01% | +339+17.6% | Added |
| Pinnacle Wealth Planning Services, Inc. | 2,273 | $236.8K | 0.03% | +2,273 | New |
| Parallel Advisors, LLC | 2,383 | $248.3K | 0.00% | +503+26.8% | Added |
| VisionPoint Advisory Group, LLC | 2,402 | $250.3K | 0.05% | +2,402 | New |
| Keel Point, LLC | 2,430 | $253.2K | 0.02% | +2,430 | New |
| Himension Fund | 2,470 | $257.4K | 0.02% | +2,470 | New |
| First Manhattan Co | 2,495 | $260.0K | 0.00% | +2,495 | New |
| 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 |
| Clearstead Advisors, LLC | 2,512 | $261.8K | 0.00% | −592−19.1% | Reduced |
| Trust Point Inc. | 2,517 | $262.3K | 0.02% | +2,517 | New |
| Requisite Capital Management, LLC | 2,522 | $262.8K | 0.04% | +2,522 | New |
| Net Worth Advisory Group | 2,532 | $263.8K | 0.08% | +2,532 | New |
| Point72 Europe (London) LLP | 2,570 | $267.7K | 0.01% | +2,570 | New |
| JDH Wealth Management, LLC | 2,572 | $268.0K | 0.19% | +2,572 | New |
| Everence Capital Management Inc | 2,590 | $270.0K | 0.02% | +2,590 | New |
| Ewa, LLC | 2,638 | $274.9K | 0.08% | +2,638 | New |
| D.A. Davidson & Co. | 2,663 | $277.5K | 0.00% | +2,663 | New |
| United Capital Financial Advisers, LLC | 2,693 | $280.6K | 0.00% | +2,693 | New |
| Gagnon Securities LLC | 2,711 | $282.5K | 0.06% | +2,711 | New |
| Greenleaf Trust | 2,737 | $285.2K | 0.00% | +2,737 | New |
| Mitsubishi UFJ Trust & Banking Corp | 2,784 | $290.1K | 0.00% | −1,347−32.6% | Reduced |
| Vise Technologies, Inc. | 2,846 | $296.6K | 0.01% | +2,846 | New |
| Journey Strategic Wealth LLC | 2,875 | $299.6K | 0.01% | −564−16.4% | Reduced |
| Public Employees Retirement System of Ohio | 2,890 | $301.1K | 0.00% | −41,661−93.5% | Reduced |
| Truist Financial Corp | 2,906 | $302.8K | 0.00% | +2,906 | New |
| Smartleaf Asset Management LLC | 2,931 | $304.8K | 0.02% | +273+10.3% | Added |
| Shell Asset Management Co | 2,930 | $305.0K | 0.03% | −1,685−36.5% | Reduced |
| KBC Group NV | 2,959 | $308.0K | 0.00% | 00.0% | Unchanged |
| Adams Wealth Management | 3,018 | $312.7K | 0.07% | +3,018 | New |
| CacheTech Inc. | 3,018 | $312.7K | 0.06% | +3,018 | New |
| Pinpoint Asset Management (Singapore) Pte. Ltd. | 3,014 | $314.1K | 0.06% | +3,013+301,300.0% | Added |
| Ethic Inc. | 3,151 | $328.3K | 0.01% | −885−21.9% | Reduced |
| Gotham Asset Management, LLC | 3,305 | $344.4K | 0.00% | −1,628−33.0% | Reduced |
| 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 |
| CIBC Asset Management Inc | 3,410 | $355.3K | 0.00% | 00.0% | Unchanged |
| Oarsman Capital, Inc. | 3,420 | $356.4K | 0.05% | −480−12.3% | Reduced |
| Two Sigma Securities, LLC | 3,502 | $364.9K | 0.05% | +3,502 | New |
| Massar Capital Management, LP | 3,600 | $375.1K | 0.13% | +3,600 | New |
| Meeder Advisory Services, Inc. | 3,769 | $392.7K | 0.02% | +52+1.4% | Added |
| Tower Research Capital LLC (TRC) | 3,775 | $393.4K | 0.01% | −11,826−75.8% | Reduced |
| Truvestments Capital LLC | 3,791 | $395.0K | 0.07% | −3,615−48.8% | Reduced |
| Forum Financial Management, LP | 3,891 | $405.4K | 0.01% | +461+13.4% | Added |
| Cresset Asset Management, LLC | 3,901 | $406.5K | 0.00% | +619+18.9% | Added |
| Shelton Capital Management | 3,904 | $406.8K | 0.01% | 00.0% | Unchanged |
| City Center Advisors, LLC | 3,930 | $409.5K | 0.40% | −180−4.4% | 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 |
| Bank Julius Baer & Co. Ltd, Zurich | 4,026 | $419.5K | 0.00% | −3−0.1% | Reduced |
| Merit Financial Group, LLC | 4,060 | $423.1K | 0.00% | −25−0.6% | Reduced |
| Larson Financial Group LLC | 4,275 | $445.5K | 0.02% | +4,027+1,623.8% | Added |
| Atom Investors LP | 4,292 | $447.2K | 0.03% | +4,292 | New |
| WBI Investments | 4,356 | $453.9K | 0.12% | +4,356 | New |
| Empowered Funds, LLC | 4,450 | $463.7K | 0.00% | −3,012−40.4% | Reduced |
| Northwestern Mutual Wealth Management Co | 4,611 | $480.5K | 0.00% | −1,983−30.1% | Reduced |
| GAMMA Investing LLC | 4,680 | $487.7K | 0.03% | +249+5.6% | Added |
| CoreCap Advisors, LLC | 4,697 | $489.4K | 0.02% | +4,694+156,466.7% | Added |
| Keybank National Association | 4,715 | $491.3K | 0.00% | 00.0% | Unchanged |
| TSFG, LLC | 4,806 | $501.0K | 0.08% | +4,310+869.0% | Added |