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, Q2 2026
Institutional positions in Rambus Inc as of Jun 30, 2026. 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
- 620
- +71 vs. Q1 2026
- Shares held
- 100.5M
- −1.86M (−1.8%) vs. Q1 2026
- Total value
- $13.3B
- +$4.50B (+51.2%) vs. Q1 2026
- New holders
- 137
- 189 more added
- Sold out
- 66
- 229 more reduced
8 institutions that held it in Q1 2026 haven't filed for Q2 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 2026: 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, Q2 2026
Shares, value and share of portfolio for each institution holding Rambus Inc; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Oregon Public Employees Retirement Fund | 22,369 | $2.97M | 0.03% | +300+1.4% | Added |
| B. Metzler seel. Sohn & Co. AG | 22,274 | $2.96M | 0.03% | +3,616+19.4% | Added |
| Independent Solutions Wealth Management, LLC | 22,171 | $2.94M | 0.38% | −403−1.8% | Reduced |
| New Mexico Educational Retirement Board | 22,100 | $2.93M | 0.07% | 00.0% | Unchanged |
| Hudson Bay Capital Management LP | 22,020 | $2.92M | 0.01% | +22,020 | New |
| Diversify Wealth Management, LLC | 29,957 | $2.89M | 0.05% | −1,296−4.1% | Reduced |
| Diversify Advisory Services, LLC | 29,957 | $2.89M | 0.05% | +24,916+494.3% | Added |
| Defiance ETFs, LLC | 22,782 | $2.82M | 0.04% | +11,343+99.2% | Added |
| Mariner, LLC | 19,935 | $2.65M | 0.00% | +660+3.4% | Added |
| Ameritas Investment Partners, Inc. | 19,901 | $2.64M | 0.07% | −8,845−30.8% | Reduced |
| Janney Montgomery Scott LLC | 19,478 | $2.59M | 0.01% | −91,129−82.4% | Reduced |
| Prudential Financial Inc | 18,823 | $2.50M | 0.00% | −70,574−78.9% | Reduced |
| Tealwood Asset Management Inc | 18,757 | $2.49M | 0.96% | −222−1.2% | Reduced |
| State of Alaska, Department of Revenue | 18,482 | $2.45M | 0.02% | −139−0.7% | Reduced |
| Cambridge Investment Research Advisors, Inc. | 18,260 | $2.42M | 0.01% | +1,578+9.5% | Added |
| Entropy Technologies, LP | 17,987 | $2.39M | 0.10% | +17,987 | New |
| Park Avenue Securities LLC | 17,836 | $2.37M | 0.01% | −1,161−6.1% | Reduced |
| Stifel Financial Corp | 17,786 | $2.36M | 0.00% | −8,157−31.4% | Reduced |
| Linden Thomas Advisory Services, LLC | 17,580 | $2.33M | 0.19% | −8,641−33.0% | Reduced |
| Envestnet Portfolio Solutions, Inc. | 17,254 | $2.29M | 0.01% | +664+4.0% | Added |
| Acadian Asset Management LLC | 16,889 | $2.24M | 0.00% | −207−1.2% | Reduced |
| Cambiar Investors LLC | 16,683 | $2.21M | 0.10% | −1,811−9.8% | Reduced |
| Investors Towarzystwo Funduszy Inwestycyjnych Spolka Akcyjna | 16,650 | $2.21M | 0.74% | −9,050−35.2% | Reduced |
| Azzad Asset Management Inc | 16,358 | $2.17M | 0.19% | +137+0.8% | Added |
| Aster Capital Management (DIFC) Ltd | 15,898 | $2.11M | 0.45% | +15,898 | New |
| Gould Capital, LLC | 15,721 | $2.09M | 1.16% | −39−0.2% | Reduced |
| Pacer Advisors, Inc. | 15,368 | $2.04M | 0.01% | −21,633−58.5% | Reduced |
| Quadrant Capital Group LLC | 15,359 | $2.04M | 0.06% | +455+3.1% | Added |
| The PNC Financial Services Group, Inc. | 15,329 | $2.03M | 0.00% | +3,001+24.3% | Added |
| Meiji Yasuda Life Insurance Co | 15,300 | $2.03M | 0.07% | 00.0% | Unchanged |
| Great Lakes Advisors, LLC | 14,884 | $1.98M | 0.02% | −2,867−16.2% | Reduced |
| US Bancorp | 14,743 | $1.96M | 0.00% | −9,503−39.2% | Reduced |
| Hussman Strategic Advisors, Inc. | 14,700 | $1.95M | 0.45% | +14,700 | New |
| Amundi | 14,695 | $1.95M | 0.00% | −1,689−10.3% | Reduced |
| Susquehanna Fundamental Investments, LLC | 14,638 | $1.94M | 0.04% | +14,638 | New |
| First Citizens Bank & Trust Co | 14,509 | $1.93M | 0.03% | −227−1.5% | Reduced |
| Penn Capital Management Co Inc | 14,204 | $1.90M | 0.12% | +1,833+14.8% | Added |
| Twinbeech Capital LP | 14,307 | $1.90M | 0.34% | +14,307 | New |
| Worldquant Millennium Advisors LLC | 14,056 | $1.87M | 0.01% | +14,056 | New |
| Schonfeld Strategic Advisors LLC | 14,000 | $1.86M | 0.01% | +14,000 | New |
| LMR Partners LLP | 13,852 | $1.84M | 0.01% | +13,852 | New |
| State of Wyoming | 13,749 | $1.83M | 0.18% | +13,092+1,992.7% | Added |
| Tuttle Tactical Management | 13,260 | $1.76M | 1.19% | +13,260 | New |
| New York Life Investment Management LLC | 13,103 | $1.74M | 0.01% | −418−3.1% | Reduced |
| Rakuten Investment Management, Inc. | 13,968 | $1.73M | 0.00% | +3,341+31.4% | Added |
| Walleye Capital LLC | 12,815 | $1.70M | 0.01% | +12,796+67,347.4% | Added |
| Wealth Enhancement Advisory Services, LLC | 14,834 | $1.66M | 0.00% | +4,736+46.9% | Added |
| Allstate Corp | 12,287 | $1.63M | 0.02% | −173−1.4% | Reduced |
| Kovitz Investment Group Partners, LLC | 12,285 | $1.63M | 0.04% | −504−3.9% | Reduced |
| Sphera Management Technology Funds Ltd | 11,950 | $1.59M | 0.56% | +11,950 | New |
| Bank of Montreal | 11,892 | $1.58M | 0.00% | −5,959−33.4% | Reduced |
| Elo Mutual Pension Insurance Co | 11,689 | $1.55M | 0.02% | −14,002−54.5% | Reduced |
| ProShare Advisors LLC | 11,669 | $1.55M | 0.00% | −18,175−60.9% | Reduced |
| E Fund Management Co., Ltd. | 11,596 | $1.54M | 0.03% | 00.0% | Unchanged |
| Empirical Financial Services, LLC d.b.a. Empirical Wealth Management | 11,506 | $1.53M | 0.02% | +2,160+23.1% | Added |
| Teacher Retirement System of Texas | 11,397 | $1.51M | 0.00% | −2,614−18.7% | Reduced |
| Wiley Bros.-Aintree Capital, LLC | 11,271 | $1.50M | 0.01% | +850+8.2% | Added |
| Global X Japan Co., Ltd. | 11,261 | $1.49M | 0.05% | +5,216+86.3% | Added |
| Jones Financial Companies LLLP | 12,945 | $1.49M | 0.00% | +4,512+53.5% | Added |
| XTX Topco Ltd | 11,101 | $1.47M | 0.02% | −10,101−47.6% | Reduced |
| Kornitzer Capital Management Inc | 11,000 | $1.46M | 0.03% | +11,000 | New |
| Diversified Trust Co | 10,865 | $1.44M | 0.02% | −28,996−72.7% | Reduced |
| Public Employees Retirement Association of Colorado | 10,766 | $1.43M | 0.00% | 00.0% | Unchanged |
| RMB Capital Management, LLC | 10,742 | $1.43M | 0.02% | +10,742 | New |
| Caitong International Asset Management Co., Ltd | 10,386 | $1.38M | 0.19% | −1,611−13.4% | Reduced |
| Panagora Asset Management Inc | 10,225 | $1.36M | 0.00% | −426,206−97.7% | Reduced |
| BNC Wealth Management, LLC | 10,009 | $1.33M | 0.32% | −59−0.6% | Reduced |
| Sona Asset Management (US) LLC | 10,000 | $1.33M | 0.05% | +10,000 | New |
| Discovery Capital Management, LLC | 9,965 | $1.32M | 0.05% | +9,965 | New |
| Arrowpoint Investment Partners (Singapore) Pte. Ltd. | 9,559 | $1.27M | 0.37% | +9,559 | New |
| Prelude Capital Management, LLC | 9,533 | $1.27M | 0.09% | +1,271+15.4% | Added |
| Redhawk Wealth Advisors, Inc. | 9,237 | $1.23M | 0.12% | +9,237 | New |
| Legato Capital Management LLC | 8,999 | $1.19M | 0.10% | +208+2.4% | Added |
| Jefferies Financial Group Inc. | 8,974 | $1.19M | 0.01% | +8,974 | New |
| Empowered Funds, LLC | 8,637 | $1.15M | 0.01% | +194+2.3% | Added |
| Novem Group | 8,589 | $1.14M | 0.12% | −1,524−15.1% | Reduced |
| Marshall Financial Group LLC | 8,583 | $1.14M | 0.17% | +516+6.4% | Added |
| Global Retirement Partners, LLC | 8,471 | $1.12M | 0.02% | +8,471 | New |
| Profund Advisors LLC | 8,442 | $1.12M | 0.03% | −900−9.6% | Reduced |
| M&T Bank Corp | 8,292 | $1.10M | 0.00% | +1,349+19.4% | Added |
| Virtu Financial LLC | 8,204 | $1.09M | 0.03% | +8,204 | New |
| Portside Wealth Group, LLC | 8,158 | $1.08M | 0.13% | −2,253−21.6% | Reduced |
| Nations Financial Group Inc, | 7,872 | $1.04M | 0.05% | −87−1.1% | Reduced |
| Federation des caisses Desjardins du Quebec | 7,784 | $1.03M | 0.00% | +1,120+16.8% | Added |
| Allspring Global Investments Holdings, LLC | 8,197 | $1.02M | 0.00% | −58,334−87.7% | Reduced |
| Sequoia Financial Advisors, LLC | 7,542 | $1.00M | 0.01% | −336−4.3% | Reduced |
| Ensign Peak Advisors, Inc | 7,482 | $993.2K | 0.00% | −19,998−72.8% | Reduced |
| Evolve Private Wealth, LLC | 7,310 | $970.3K | 0.06% | −568−7.2% | Reduced |
| Jennison Associates LLC | 7,295 | $968.3K | 0.00% | +556+8.3% | Added |
| Swiss Life Asset Management Ltd | 7,215 | $957.7K | 0.00% | +742+11.5% | Added |
| Wincap Financial LLC | 7,170 | $951.7K | 0.51% | +512+7.7% | Added |
| IMC-Chicago, LLC | 7,129 | $946.3K | 0.01% | +7,129 | New |
| Lido Advisors, LLC | 7,035 | $933.9K | 0.00% | +793+12.7% | Added |
| CenterBook Partners LP | 6,968 | $924.9K | 0.05% | +1,556+28.8% | Added |
| SG Americas Securities, LLC | 6,939 | $921.0K | 0.00% | −19,023−73.3% | Reduced |
| Vise Technologies, Inc. | 6,912 | $917.5K | 0.01% | +3,285+90.6% | Added |
| Fox Run Management, L.L.C. | 6,907 | $916.8K | 0.15% | +4,081+144.4% | Added |
| Evergreen Capital Management LLC | 6,854 | $909.8K | 0.02% | −22−0.3% | Reduced |
| Independent Financial Group, LLC | 6,816 | $904.8K | 0.02% | +291+4.5% | Added |
| Simplex Trading, LLC | 6,803 | $903.0K | 0.02% | +6,803 | New |