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 |
|---|---|---|---|---|---|
| Blair William & Co | 6,734 | $893.9K | 0.00% | +1,774+35.8% | Added |
| Crossmark Global Holdings, Inc. | 6,627 | $879.7K | 0.01% | +105+1.6% | Added |
| Sanctuary Advisors, LLC | 6,567 | $871.6K | 0.00% | −840−11.3% | Reduced |
| Diametric Capital, LP | 6,504 | $863.3K | 0.09% | +6,504 | New |
| CIBC Bancorp USA Inc. | 6,465 | $858.2K | 0.00% | +543+9.2% | Added |
| Kestra Private Wealth Services, LLC | 6,426 | $853.0K | 0.01% | +30.0% | Added |
| Mitsubishi UFJ Trust & Banking Corp | 6,354 | $843.4K | 0.00% | +6,354 | New |
| Scotia Capital Inc. | 6,338 | $841.3K | 0.00% | +6,338 | New |
| Vestmark Advisory Solutions, Inc. | 6,293 | $835.3K | 0.01% | +6,293 | New |
| Vontobel Holding Ltd. | 6,252 | $829.9K | 0.00% | −434−6.5% | Reduced |
| Keebeck Wealth Management, LLC | 6,214 | $824.8K | 0.08% | −1,225−16.5% | Reduced |
| Securian Asset Management, Inc | 7,935 | $804.9K | 0.03% | 00.0% | Unchanged |
| AlphaGrep UK Ltd | 5,945 | $789.1K | 0.24% | +3,276+122.7% | Added |
| M.E. Allison & Co., Inc. | 5,897 | $782.8K | 0.45% | 00.0% | Unchanged |
| 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 |
| Kerr Financial Planning Corp | 5,850 | $776.5K | 0.87% | −200−3.3% | Reduced |
| Oak Grove Capital LLC | 5,800 | $769.9K | 0.06% | −800−12.1% | Reduced |
| O'Shaughnessy Asset Management, LLC | 5,779 | $767.1K | 0.00% | +946+19.6% | Added |
| Headlands Technologies LLC | 5,768 | $765.6K | 0.08% | +5,768 | New |
| Campbell & CO Investment Adviser LLC | 5,740 | $761.9K | 0.04% | +5,740 | New |
| Alliance Wealth Advisors, LLC | 5,630 | $747.3K | 0.14% | −1,240−18.0% | Reduced |
| Castleark Management LLC | 5,610 | $744.7K | 0.02% | +5,610 | New |
| Utah Retirement Systems | 5,609 | $744.5K | 0.01% | +5,609 | New |
| CI Private Wealth, LLC | 5,607 | $744.2K | 0.00% | +1,289+29.9% | Added |
| Advisors Asset Management, Inc. | 5,569 | $739.2K | 0.01% | +3,201+135.2% | Added |
| Stephens Inc | 5,434 | $721.3K | 0.01% | −27,547−83.5% | Reduced |
| Farther Finance Advisors, LLC | 5,423 | $719.7K | 0.01% | +2,787+105.7% | Added |
| Himension Fund | 5,364 | $712.0K | 0.04% | −1,068−16.6% | Reduced |
| Alps Advisors Inc | 5,327 | $707.1K | 0.00% | +56+1.1% | Added |
| TSFG, LLC | 5,316 | $706.0K | 0.09% | +410+8.4% | Added |
| Coldstream Capital Management Inc | 5,306 | $704.3K | 0.01% | −19−0.4% | Reduced |
| Ami Asset Management Corp | 5,273 | $699.9K | 0.04% | +2,323+78.7% | Added |
| Commonwealth Equity Services, LLC | 5,259 | $698.1K | 0.00% | +159+3.1% | Added |
| DnB Asset Management AS | 5,233 | $694.6K | 0.00% | 00.0% | Unchanged |
| Vestcor Inc | 5,175 | $687.0K | 0.02% | +1,756+51.4% | Added |
| Dakota Wealth Management | 5,175 | $686.9K | 0.01% | +5,175 | New |
| Equitable Holdings, Inc. | 5,168 | $686.0K | 0.00% | −14,395−73.6% | Reduced |
| Pekin Hardy Strauss, Inc. | 5,120 | $679.6K | 0.06% | +5,120 | New |
| WMS Group LLC | 5,038 | $668.7K | 0.86% | +5,038 | New |
| Gotham Asset Management, LLC | 5,035 | $668.3K | 0.00% | −832−14.2% | Reduced |
| AnglePoint Asset Management Ltd | 5,012 | $665.3K | 0.43% | +5,012 | New |
| Rockland Trust Co | 4,996 | $663.2K | 0.03% | 00.0% | Unchanged |
| Bokf, NA | 4,976 | $660.5K | 0.01% | +202+4.2% | Added |
| Yorktown Management & Research Co Inc | 4,950 | $657.1K | 0.40% | −2,050−29.3% | Reduced |
| National Bank of Canada | 4,936 | $654.3K | 0.00% | +1,157+30.6% | Added |
| Cresset Asset Management, LLC | 4,825 | $640.5K | 0.00% | +63+1.3% | Added |
| Marex Group plc | 4,807 | $638.1K | 0.00% | −827−14.7% | Reduced |
| Ashton Thomas Private Wealth, LLC | 4,778 | $634.2K | 0.01% | −7−0.1% | Reduced |
| Atria Investments LLC | 4,729 | $627.7K | 0.01% | −2,212−31.9% | Reduced |
| Pinebridge Investments LLC | 4,715 | $625.9K | 0.01% | +4,715 | New |
| DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main | 4,710 | $625.2K | 0.00% | −2,606−35.6% | Reduced |
| Norden Group LLC | 4,654 | $617.8K | 0.05% | −1,947−29.5% | Reduced |
| TCG Advisory Services, LLC | 4,653 | $617.6K | 0.01% | −605−11.5% | Reduced |
| Nisa Investment Advisors, LLC | 4,630 | $614.6K | 0.00% | −246−5.0% | Reduced |
| Merit Financial Group, LLC | 4,612 | $612.2K | 0.00% | +127+2.8% | Added |
| Parallax Volatility Advisers, L.P. | 4,573 | $607.0K | 0.02% | +4,573 | New |
| Greenwood Capital Associates LLC | 4,519 | $599.9K | 0.06% | −1,080−19.3% | Reduced |
| USS Investment Management Ltd | 4,500 | $596.7K | 0.00% | +4,500 | New |
| SRS Capital Advisors, Inc. | 4,376 | $580.9K | 0.00% | +4,331+9,624.4% | Added |
| Neo Ivy Capital Management | 4,310 | $572.1K | 0.13% | +4,310 | New |
| Maverick Capital LtdSuperinvestorMaverick Capital | 4,309 | $572.0K | 0.01% | −8,719−66.9% | Reduced |
| Sumitomo Mitsui Trust Holdings, Inc. | 4,252 | $564.4K | 0.00% | −3,000−41.4% | Reduced |
| AE Wealth Management LLC | 4,168 | $553.3K | 0.00% | +275+7.1% | Added |
| GAMMA Investing LLC | 4,139 | $549.4K | 0.02% | −684−14.2% | Reduced |
| Patten Group, Inc. | 4,134 | $548.7K | 0.09% | +4,134 | New |
| Private Advisor Group, LLC | 4,089 | $542.8K | 0.00% | −3,646−47.1% | Reduced |
| Dark Forest Capital Management LP | 4,030 | $534.9K | 0.03% | +4,030 | New |
| CWM Advisors, LLC | 4,017 | $533.2K | 0.02% | +4,017 | New |
| Hantz Financial Services, Inc. | 4,008 | $532.0K | 0.01% | +1,586+65.5% | Added |
| Twin Tree Management, LP | 3,992 | $529.9K | 0.08% | +3,992 | New |
| Fifth Third Wealth Advisors LLC | 3,894 | $516.9K | 0.01% | +439+12.7% | Added |
| Bridgewater Associates, LP | 3,871 | $513.8K | 0.00% | −47,983−92.5% | Reduced |
| Abel Hall, LLC | 3,831 | $508.5K | 0.09% | +345+9.9% | Added |
| Resonant Capital Advisors, LLC | 3,825 | $507.7K | 0.02% | +6+0.2% | Added |
| Altshuler Shaham Ltd | 3,776 | $501.2K | 0.01% | +3,776 | New |
| Bank Julius Baer & Co. Ltd, Zurich | 3,860 | $500.9K | 0.00% | −604−13.5% | Reduced |
| Concurrent Investment Advisors, LLC | 3,760 | $499.0K | 0.00% | −66−1.7% | Reduced |
| Ethic Inc. | 3,684 | $489.0K | 0.01% | +144+4.1% | Added |
| OP Asset Management Ltd | 3,656 | $485.3K | 0.01% | +2,188+149.0% | Added |
| Savant Capital, LLC | 4,392 | $480.9K | 0.00% | +4,392 | New |
| Shelton Capital Management | 3,613 | $479.6K | 0.01% | −64−1.7% | Reduced |
| Meeder Advisory Services, Inc. | 3,551 | $471.4K | 0.02% | −88−2.4% | Reduced |
| Ak Global Asset Management, LLC | 3,500 | $464.6K | 0.39% | −1,500−30.0% | Reduced |
| United Capital Financial Advisers, LLC | 3,472 | $460.9K | 0.00% | +109+3.2% | Added |
| Polymer Capital Management (US) LLC | 3,469 | $460.5K | 0.07% | +3,469 | New |
| Brinker Capital Investments, LLC | 3,415 | $453.3K | 0.00% | −790−18.8% | Reduced |
| Laurion Capital Management LP | 3,414 | $453.2K | 0.03% | +3,414 | New |
| CIBC Asset Management Inc | 3,410 | $452.6K | 0.00% | 00.0% | Unchanged |
| Buckingham Strategic Partners | 3,400 | $451.3K | 0.00% | +6+0.2% | Added |
| HHM Wealth Advisors, LLC | 3,335 | $442.7K | 0.04% | 00.0% | Unchanged |
| FIL Ltd | 3,332 | $442.3K | 0.00% | −6,034−64.4% | Reduced |
| Graham Capital Management, L.P. | 3,330 | $442.0K | 0.01% | +3,330 | New |
| KBC Group NV | 3,316 | $440.0K | 0.00% | 00.0% | Unchanged |
| Greenleaf Trust | 3,310 | $439.4K | 0.00% | +26+0.8% | Added |
| Callan Family Office, LLC | 3,239 | $429.9K | 0.01% | −227−6.5% | Reduced |
| Aviva PLC | 3,173 | $421.2K | 0.00% | −1,535−32.6% | Reduced |
| North Dakota State Investment Board | 3,169 | $420.7K | 0.02% | +3,169 | New |
| One Wealth Capital Management, LLC | 3,167 | $420.4K | 0.12% | +3,167 | New |
| Oppenheimer Asset Management Inc. | 3,160 | $419.5K | 0.00% | −61−1.9% | Reduced |