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 |
|---|---|---|---|---|---|
| First Manhattan Co | 2,495 | $331.2K | 0.00% | 00.0% | Unchanged |
| HB Wealth Management, LLC | 2,498 | $331.6K | 0.00% | +2,498 | New |
| Walser Wealth Management Company, A Ltd Liability Co | 2,528 | $335.6K | 0.14% | +2,528 | New |
| D.A. Davidson & Co. | 2,535 | $336.5K | 0.00% | +135+5.6% | Added |
| Ewa, LLC | 2,565 | $340.5K | 0.06% | −32−1.2% | Reduced |
| Snowden Capital Advisors LLC | 2,571 | $341.3K | 0.01% | −363−12.4% | Reduced |
| JDH Wealth Management, LLC | 2,582 | $342.7K | 0.21% | +3+0.1% | Added |
| Foundations Investment Advisors, LLC | 2,639 | $350.3K | 0.00% | +2,639 | New |
| Inceptionr LLC | 2,663 | $353.5K | 0.09% | −1,688−38.8% | Reduced |
| VisionPoint Advisory Group, LLC | 2,768 | $367.4K | 0.06% | −164−5.6% | Reduced |
| Legacy Advisors, LLC | 2,793 | $370.7K | 0.03% | +2,793 | New |
| Keybank National Association | 2,866 | $380.4K | 0.00% | −133−4.4% | Reduced |
| Truvestments Capital LLC | 2,882 | $382.6K | 0.06% | +15+0.5% | Added |
| MML Investors Services, LLC | 2,919 | $387.5K | 0.00% | −2,560−46.7% | Reduced |
| Monticello Wealth Management, LLC | 2,923 | $388.0K | 0.02% | +2,923 | New |
| Stonebridge Financial Group, LLC | 2,980 | $395.0K | 0.05% | +2,980 | New |
| Everence Capital Management Inc | 3,003 | $399.0K | 0.02% | 00.0% | Unchanged |
| Oarsman Capital, Inc. | 3,020 | $400.9K | 0.04% | 00.0% | Unchanged |
| ProCore Advisors, LLC | 3,021 | $401.0K | 0.50% | −102−3.3% | Reduced |
| Buffalo Business & Estate Services Ltd | – | $418.4K | 0.05% | – | New |
| Oppenheimer Asset Management Inc. | 3,160 | $419.5K | 0.00% | −61−1.9% | Reduced |
| One Wealth Capital Management, LLC | 3,167 | $420.4K | 0.12% | +3,167 | New |
| North Dakota State Investment Board | 3,169 | $420.7K | 0.02% | +3,169 | New |
| Aviva PLC | 3,173 | $421.2K | 0.00% | −1,535−32.6% | Reduced |
| Callan Family Office, LLC | 3,239 | $429.9K | 0.01% | −227−6.5% | Reduced |
| Greenleaf Trust | 3,310 | $439.4K | 0.00% | +26+0.8% | Added |
| KBC Group NV | 3,316 | $440.0K | 0.00% | 00.0% | Unchanged |
| Graham Capital Management, L.P. | 3,330 | $442.0K | 0.01% | +3,330 | New |
| FIL Ltd | 3,332 | $442.3K | 0.00% | −6,034−64.4% | Reduced |
| HHM Wealth Advisors, LLC | 3,335 | $442.7K | 0.04% | 00.0% | Unchanged |
| Buckingham Strategic Partners | 3,400 | $451.3K | 0.00% | +6+0.2% | Added |
| CIBC Asset Management Inc | 3,410 | $452.6K | 0.00% | 00.0% | Unchanged |
| Laurion Capital Management LP | 3,414 | $453.2K | 0.03% | +3,414 | New |
| Brinker Capital Investments, LLC | 3,415 | $453.3K | 0.00% | −790−18.8% | Reduced |
| Polymer Capital Management (US) LLC | 3,469 | $460.5K | 0.07% | +3,469 | New |
| United Capital Financial Advisers, LLC | 3,472 | $460.9K | 0.00% | +109+3.2% | Added |
| Ak Global Asset Management, LLC | 3,500 | $464.6K | 0.39% | −1,500−30.0% | Reduced |
| Meeder Advisory Services, Inc. | 3,551 | $471.4K | 0.02% | −88−2.4% | Reduced |
| Shelton Capital Management | 3,613 | $479.6K | 0.01% | −64−1.7% | Reduced |
| Savant Capital, LLC | 4,392 | $480.9K | 0.00% | +4,392 | New |
| OP Asset Management Ltd | 3,656 | $485.3K | 0.01% | +2,188+149.0% | Added |
| Ethic Inc. | 3,684 | $489.0K | 0.01% | +144+4.1% | Added |
| Concurrent Investment Advisors, LLC | 3,760 | $499.0K | 0.00% | −66−1.7% | Reduced |
| Bank Julius Baer & Co. Ltd, Zurich | 3,860 | $500.9K | 0.00% | −604−13.5% | Reduced |
| Altshuler Shaham Ltd | 3,776 | $501.2K | 0.01% | +3,776 | New |
| Resonant Capital Advisors, LLC | 3,825 | $507.7K | 0.02% | +6+0.2% | Added |
| Abel Hall, LLC | 3,831 | $508.5K | 0.09% | +345+9.9% | Added |
| Bridgewater Associates, LP | 3,871 | $513.8K | 0.00% | −47,983−92.5% | Reduced |
| Fifth Third Wealth Advisors LLC | 3,894 | $516.9K | 0.01% | +439+12.7% | Added |
| Twin Tree Management, LP | 3,992 | $529.9K | 0.08% | +3,992 | New |
| Hantz Financial Services, Inc. | 4,008 | $532.0K | 0.01% | +1,586+65.5% | Added |
| CWM Advisors, LLC | 4,017 | $533.2K | 0.02% | +4,017 | New |
| Dark Forest Capital Management LP | 4,030 | $534.9K | 0.03% | +4,030 | New |
| Private Advisor Group, LLC | 4,089 | $542.8K | 0.00% | −3,646−47.1% | Reduced |
| Patten Group, Inc. | 4,134 | $548.7K | 0.09% | +4,134 | New |
| GAMMA Investing LLC | 4,139 | $549.4K | 0.02% | −684−14.2% | Reduced |
| AE Wealth Management LLC | 4,168 | $553.3K | 0.00% | +275+7.1% | Added |
| Sumitomo Mitsui Trust Holdings, Inc. | 4,252 | $564.4K | 0.00% | −3,000−41.4% | Reduced |
| Maverick Capital LtdSuperinvestorMaverick Capital | 4,309 | $572.0K | 0.01% | −8,719−66.9% | Reduced |
| Neo Ivy Capital Management | 4,310 | $572.1K | 0.13% | +4,310 | New |
| SRS Capital Advisors, Inc. | 4,376 | $580.9K | 0.00% | +4,331+9,624.4% | Added |
| USS Investment Management Ltd | 4,500 | $596.7K | 0.00% | +4,500 | New |
| Greenwood Capital Associates LLC | 4,519 | $599.9K | 0.06% | −1,080−19.3% | Reduced |
| Parallax Volatility Advisers, L.P. | 4,573 | $607.0K | 0.02% | +4,573 | New |
| Merit Financial Group, LLC | 4,612 | $612.2K | 0.00% | +127+2.8% | Added |
| Nisa Investment Advisors, LLC | 4,630 | $614.6K | 0.00% | −246−5.0% | Reduced |
| TCG Advisory Services, LLC | 4,653 | $617.6K | 0.01% | −605−11.5% | Reduced |
| Norden Group LLC | 4,654 | $617.8K | 0.05% | −1,947−29.5% | Reduced |
| DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main | 4,710 | $625.2K | 0.00% | −2,606−35.6% | Reduced |
| Pinebridge Investments LLC | 4,715 | $625.9K | 0.01% | +4,715 | New |
| Atria Investments LLC | 4,729 | $627.7K | 0.01% | −2,212−31.9% | Reduced |
| Ashton Thomas Private Wealth, LLC | 4,778 | $634.2K | 0.01% | −7−0.1% | Reduced |
| Marex Group plc | 4,807 | $638.1K | 0.00% | −827−14.7% | Reduced |
| Cresset Asset Management, LLC | 4,825 | $640.5K | 0.00% | +63+1.3% | Added |
| National Bank of Canada | 4,936 | $654.3K | 0.00% | +1,157+30.6% | Added |
| Yorktown Management & Research Co Inc | 4,950 | $657.1K | 0.40% | −2,050−29.3% | Reduced |
| Bokf, NA | 4,976 | $660.5K | 0.01% | +202+4.2% | Added |
| Rockland Trust Co | 4,996 | $663.2K | 0.03% | 00.0% | Unchanged |
| AnglePoint Asset Management Ltd | 5,012 | $665.3K | 0.43% | +5,012 | New |
| Gotham Asset Management, LLC | 5,035 | $668.3K | 0.00% | −832−14.2% | Reduced |
| WMS Group LLC | 5,038 | $668.7K | 0.86% | +5,038 | New |
| Pekin Hardy Strauss, Inc. | 5,120 | $679.6K | 0.06% | +5,120 | New |
| Equitable Holdings, Inc. | 5,168 | $686.0K | 0.00% | −14,395−73.6% | Reduced |
| Dakota Wealth Management | 5,175 | $686.9K | 0.01% | +5,175 | New |
| Vestcor Inc | 5,175 | $687.0K | 0.02% | +1,756+51.4% | Added |
| DnB Asset Management AS | 5,233 | $694.6K | 0.00% | 00.0% | Unchanged |
| Commonwealth Equity Services, LLC | 5,259 | $698.1K | 0.00% | +159+3.1% | Added |
| Ami Asset Management Corp | 5,273 | $699.9K | 0.04% | +2,323+78.7% | Added |
| Coldstream Capital Management Inc | 5,306 | $704.3K | 0.01% | −19−0.4% | Reduced |
| TSFG, LLC | 5,316 | $706.0K | 0.09% | +410+8.4% | Added |
| Alps Advisors Inc | 5,327 | $707.1K | 0.00% | +56+1.1% | Added |
| Himension Fund | 5,364 | $712.0K | 0.04% | −1,068−16.6% | Reduced |
| Farther Finance Advisors, LLC | 5,423 | $719.7K | 0.01% | +2,787+105.7% | Added |
| Stephens Inc | 5,434 | $721.3K | 0.01% | −27,547−83.5% | Reduced |
| Advisors Asset Management, Inc. | 5,569 | $739.2K | 0.01% | +3,201+135.2% | Added |
| CI Private Wealth, LLC | 5,607 | $744.2K | 0.00% | +1,289+29.9% | Added |
| Utah Retirement Systems | 5,609 | $744.5K | 0.01% | +5,609 | New |
| Castleark Management LLC | 5,610 | $744.7K | 0.02% | +5,610 | New |
| Alliance Wealth Advisors, LLC | 5,630 | $747.3K | 0.14% | −1,240−18.0% | Reduced |
| Campbell & CO Investment Adviser LLC | 5,740 | $761.9K | 0.04% | +5,740 | New |