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 |
|---|---|---|---|---|---|
| Headlands Technologies LLC | 5,768 | $765.6K | 0.08% | +5,768 | New |
| O'Shaughnessy Asset Management, LLC | 5,779 | $767.1K | 0.00% | +946+19.6% | Added |
| Oak Grove Capital LLC | 5,800 | $769.9K | 0.06% | −800−12.1% | Reduced |
| Kerr Financial Planning Corp | 5,850 | $776.5K | 0.87% | −200−3.3% | Reduced |
| Argent Capital Management LLC | 5,875 | $779.8K | 0.02% | −4,126−41.3% | Reduced |
| Maryland State Retirement & Pension System | 5,875 | $779.8K | 0.01% | +5,875 | New |
| M.E. Allison & Co., Inc. | 5,897 | $782.8K | 0.45% | 00.0% | Unchanged |
| AlphaGrep UK Ltd | 5,945 | $789.1K | 0.24% | +3,276+122.7% | Added |
| Securian Asset Management, Inc | 7,935 | $804.9K | 0.03% | 00.0% | Unchanged |
| Keebeck Wealth Management, LLC | 6,214 | $824.8K | 0.08% | −1,225−16.5% | Reduced |
| Vontobel Holding Ltd. | 6,252 | $829.9K | 0.00% | −434−6.5% | Reduced |
| Vestmark Advisory Solutions, Inc. | 6,293 | $835.3K | 0.01% | +6,293 | New |
| Scotia Capital Inc. | 6,338 | $841.3K | 0.00% | +6,338 | New |
| Mitsubishi UFJ Trust & Banking Corp | 6,354 | $843.4K | 0.00% | +6,354 | New |
| Kestra Private Wealth Services, LLC | 6,426 | $853.0K | 0.01% | +30.0% | Added |
| CIBC Bancorp USA Inc. | 6,465 | $858.2K | 0.00% | +543+9.2% | Added |
| Diametric Capital, LP | 6,504 | $863.3K | 0.09% | +6,504 | New |
| Sanctuary Advisors, LLC | 6,567 | $871.6K | 0.00% | −840−11.3% | Reduced |
| Crossmark Global Holdings, Inc. | 6,627 | $879.7K | 0.01% | +105+1.6% | Added |
| Blair William & Co | 6,734 | $893.9K | 0.00% | +1,774+35.8% | Added |
| Simplex Trading, LLC | 6,803 | $903.0K | 0.02% | +6,803 | New |
| Independent Financial Group, LLC | 6,816 | $904.8K | 0.02% | +291+4.5% | Added |
| Evergreen Capital Management LLC | 6,854 | $909.8K | 0.02% | −22−0.3% | Reduced |
| Fox Run Management, L.L.C. | 6,907 | $916.8K | 0.15% | +4,081+144.4% | Added |
| Vise Technologies, Inc. | 6,912 | $917.5K | 0.01% | +3,285+90.6% | Added |
| SG Americas Securities, LLC | 6,939 | $921.0K | 0.00% | −19,023−73.3% | Reduced |
| CenterBook Partners LP | 6,968 | $924.9K | 0.05% | +1,556+28.8% | Added |
| Lido Advisors, LLC | 7,035 | $933.9K | 0.00% | +793+12.7% | Added |
| IMC-Chicago, LLC | 7,129 | $946.3K | 0.01% | +7,129 | New |
| Wincap Financial LLC | 7,170 | $951.7K | 0.51% | +512+7.7% | Added |
| Swiss Life Asset Management Ltd | 7,215 | $957.7K | 0.00% | +742+11.5% | Added |
| Jennison Associates LLC | 7,295 | $968.3K | 0.00% | +556+8.3% | Added |
| Evolve Private Wealth, LLC | 7,310 | $970.3K | 0.06% | −568−7.2% | Reduced |
| Ensign Peak Advisors, Inc | 7,482 | $993.2K | 0.00% | −19,998−72.8% | Reduced |
| Sequoia Financial Advisors, LLC | 7,542 | $1.00M | 0.01% | −336−4.3% | Reduced |
| Allspring Global Investments Holdings, LLC | 8,197 | $1.02M | 0.00% | −58,334−87.7% | Reduced |
| Federation des caisses Desjardins du Quebec | 7,784 | $1.03M | 0.00% | +1,120+16.8% | Added |
| Nations Financial Group Inc, | 7,872 | $1.04M | 0.05% | −87−1.1% | Reduced |
| Portside Wealth Group, LLC | 8,158 | $1.08M | 0.13% | −2,253−21.6% | Reduced |
| Virtu Financial LLC | 8,204 | $1.09M | 0.03% | +8,204 | New |
| M&T Bank Corp | 8,292 | $1.10M | 0.00% | +1,349+19.4% | Added |
| Profund Advisors LLC | 8,442 | $1.12M | 0.03% | −900−9.6% | Reduced |
| Global Retirement Partners, LLC | 8,471 | $1.12M | 0.02% | +8,471 | New |
| Marshall Financial Group LLC | 8,583 | $1.14M | 0.17% | +516+6.4% | Added |
| Novem Group | 8,589 | $1.14M | 0.12% | −1,524−15.1% | Reduced |
| Empowered Funds, LLC | 8,637 | $1.15M | 0.01% | +194+2.3% | Added |
| Jefferies Financial Group Inc. | 8,974 | $1.19M | 0.01% | +8,974 | New |
| Legato Capital Management LLC | 8,999 | $1.19M | 0.10% | +208+2.4% | Added |
| Redhawk Wealth Advisors, Inc. | 9,237 | $1.23M | 0.12% | +9,237 | New |
| Prelude Capital Management, LLC | 9,533 | $1.27M | 0.09% | +1,271+15.4% | Added |
| Arrowpoint Investment Partners (Singapore) Pte. Ltd. | 9,559 | $1.27M | 0.37% | +9,559 | New |
| Discovery Capital Management, LLC | 9,965 | $1.32M | 0.05% | +9,965 | New |
| Sona Asset Management (US) LLC | 10,000 | $1.33M | 0.05% | +10,000 | New |
| BNC Wealth Management, LLC | 10,009 | $1.33M | 0.32% | −59−0.6% | Reduced |
| Panagora Asset Management Inc | 10,225 | $1.36M | 0.00% | −426,206−97.7% | Reduced |
| Caitong International Asset Management Co., Ltd | 10,386 | $1.38M | 0.19% | −1,611−13.4% | Reduced |
| RMB Capital Management, LLC | 10,742 | $1.43M | 0.02% | +10,742 | New |
| Public Employees Retirement Association of Colorado | 10,766 | $1.43M | 0.00% | 00.0% | Unchanged |
| Diversified Trust Co | 10,865 | $1.44M | 0.02% | −28,996−72.7% | Reduced |
| Kornitzer Capital Management Inc | 11,000 | $1.46M | 0.03% | +11,000 | New |
| XTX Topco Ltd | 11,101 | $1.47M | 0.02% | −10,101−47.6% | Reduced |
| Jones Financial Companies LLLP | 12,945 | $1.49M | 0.00% | +4,512+53.5% | Added |
| Global X Japan Co., Ltd. | 11,261 | $1.49M | 0.05% | +5,216+86.3% | Added |
| Wiley Bros.-Aintree Capital, LLC | 11,271 | $1.50M | 0.01% | +850+8.2% | Added |
| Teacher Retirement System of Texas | 11,397 | $1.51M | 0.00% | −2,614−18.7% | Reduced |
| Empirical Financial Services, LLC d.b.a. Empirical Wealth Management | 11,506 | $1.53M | 0.02% | +2,160+23.1% | Added |
| E Fund Management Co., Ltd. | 11,596 | $1.54M | 0.03% | 00.0% | Unchanged |
| ProShare Advisors LLC | 11,669 | $1.55M | 0.00% | −18,175−60.9% | Reduced |
| Elo Mutual Pension Insurance Co | 11,689 | $1.55M | 0.02% | −14,002−54.5% | Reduced |
| Bank of Montreal | 11,892 | $1.58M | 0.00% | −5,959−33.4% | Reduced |
| Sphera Management Technology Funds Ltd | 11,950 | $1.59M | 0.56% | +11,950 | New |
| Kovitz Investment Group Partners, LLC | 12,285 | $1.63M | 0.04% | −504−3.9% | Reduced |
| Allstate Corp | 12,287 | $1.63M | 0.02% | −173−1.4% | Reduced |
| Wealth Enhancement Advisory Services, LLC | 14,834 | $1.66M | 0.00% | +4,736+46.9% | Added |
| Walleye Capital LLC | 12,815 | $1.70M | 0.01% | +12,796+67,347.4% | Added |
| Rakuten Investment Management, Inc. | 13,968 | $1.73M | 0.00% | +3,341+31.4% | Added |
| New York Life Investment Management LLC | 13,103 | $1.74M | 0.01% | −418−3.1% | Reduced |
| Tuttle Tactical Management | 13,260 | $1.76M | 1.19% | +13,260 | New |
| State of Wyoming | 13,749 | $1.83M | 0.18% | +13,092+1,992.7% | Added |
| LMR Partners LLP | 13,852 | $1.84M | 0.01% | +13,852 | New |
| Schonfeld Strategic Advisors LLC | 14,000 | $1.86M | 0.01% | +14,000 | New |
| Worldquant Millennium Advisors LLC | 14,056 | $1.87M | 0.01% | +14,056 | New |
| Twinbeech Capital LP | 14,307 | $1.90M | 0.34% | +14,307 | New |
| Penn Capital Management Co Inc | 14,204 | $1.90M | 0.12% | +1,833+14.8% | Added |
| First Citizens Bank & Trust Co | 14,509 | $1.93M | 0.03% | −227−1.5% | Reduced |
| Susquehanna Fundamental Investments, LLC | 14,638 | $1.94M | 0.04% | +14,638 | New |
| Amundi | 14,695 | $1.95M | 0.00% | −1,689−10.3% | Reduced |
| Hussman Strategic Advisors, Inc. | 14,700 | $1.95M | 0.45% | +14,700 | New |
| US Bancorp | 14,743 | $1.96M | 0.00% | −9,503−39.2% | Reduced |
| Great Lakes Advisors, LLC | 14,884 | $1.98M | 0.02% | −2,867−16.2% | Reduced |
| Meiji Yasuda Life Insurance Co | 15,300 | $2.03M | 0.07% | 00.0% | Unchanged |
| The PNC Financial Services Group, Inc. | 15,329 | $2.03M | 0.00% | +3,001+24.3% | Added |
| Quadrant Capital Group LLC | 15,359 | $2.04M | 0.06% | +455+3.1% | Added |
| Pacer Advisors, Inc. | 15,368 | $2.04M | 0.01% | −21,633−58.5% | Reduced |
| Gould Capital, LLC | 15,721 | $2.09M | 1.16% | −39−0.2% | Reduced |
| Aster Capital Management (DIFC) Ltd | 15,898 | $2.11M | 0.45% | +15,898 | New |
| Azzad Asset Management Inc | 16,358 | $2.17M | 0.19% | +137+0.8% | Added |
| Investors Towarzystwo Funduszy Inwestycyjnych Spolka Akcyjna | 16,650 | $2.21M | 0.74% | −9,050−35.2% | Reduced |
| Cambiar Investors LLC | 16,683 | $2.21M | 0.10% | −1,811−9.8% | Reduced |
| Acadian Asset Management LLC | 16,889 | $2.24M | 0.00% | −207−1.2% | Reduced |