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; 621 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, Q4 2023
Institutional positions in Rambus Inc as of Dec 31, 2023. 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
- 400
- +55 vs. Q3 2023
- Shares held
- 97.0M
- −967.1K (−1.0%) vs. Q3 2023
- Total value
- $6.62B
- +$1.14B (+20.9%) vs. Q3 2023
- New holders
- 93
- 118 more added
- Sold out
- 38
- 145 more reduced
5 institutions that held it in Q3 2023 haven't filed for Q4 2023 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 2023: 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 | 621 | $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, Q4 2023
Shares, value and share of portfolio for each institution holding Rambus Inc; share changes are against Q3 2023.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Profund Advisors LLC | 11,272 | $769.3K | 0.03% | +264+2.4% | Added |
| Barometer Capital Management Inc. | 11,600 | $791.7K | 0.22% | +11,600 | New |
| State of Alaska, Department of Revenue | 11,610 | $792.0K | 0.01% | −56,337−82.9% | Reduced |
| Northwestern Mutual Wealth Management Co | 11,645 | $794.8K | 0.00% | +1,500+14.8% | Added |
| Cambridge Investment Research Advisors, Inc. | 11,987 | $818.0K | 0.00% | −67−0.6% | Reduced |
| Pictet Asset Management Holding SA | 12,178 | $831.1K | 0.00% | +17+0.1% | Added |
| Federated Hermes, Inc. | 12,189 | $831.9K | 0.00% | +12,189 | New |
| Mariner, LLC | 12,578 | $858.4K | 0.00% | +1,855+17.3% | Added |
| Public Employees Retirement Association of Colorado | 12,970 | $885.0K | 0.00% | −1,201−8.5% | Reduced |
| Aquatic Capital Management LLC | 13,000 | $887.0K | 0.02% | +13,000 | New |
| Hanseatic Management Services Inc | 13,115 | $895.1K | 1.56% | −1,845−12.3% | Reduced |
| Meritage Portfolio Management | 13,290 | $907.0K | 0.06% | +684+5.4% | Added |
| JustInvest LLC | 13,459 | $918.6K | 0.02% | +1,807+15.5% | Added |
| Cetera Advisor Networks LLC | 13,824 | $943.5K | 0.01% | +1,630+13.4% | Added |
| US Bancorp | 13,955 | $952.4K | 0.00% | −436−3.0% | Reduced |
| BNC Wealth Management, LLC | 14,346 | $979.1K | 0.46% | 00.0% | Unchanged |
| Lazard Asset Management LLC | 14,515 | $990.0K | 0.00% | +10,140+231.8% | Added |
| Xponance, Inc. | 15,659 | $1.07M | 0.01% | +9,260+144.7% | Added |
| Pacer Advisors, Inc. | 16,160 | $1.10M | 0.00% | +15,609+2,832.8% | Added |
| ClariVest Asset Management LLC | 16,683 | $1.14M | 0.06% | −2,900−14.8% | Reduced |
| Seven Eight Capital, LP | 16,999 | $1.16M | 0.13% | +16,999 | New |
| Walleye Capital LLC | 17,357 | $1.18M | 0.02% | −65,877−79.1% | Reduced |
| Chesapeake Capital Corp | 17,391 | $1.19M | 0.87% | +17,391 | New |
| Pathstone Holdings, LLC | 17,556 | $1.20M | 0.01% | +17,556 | New |
| Bailard, Inc. | 17,785 | $1.21M | 0.04% | +630+3.7% | Added |
| QRG Capital Management, Inc. | 18,087 | $1.23M | 0.02% | −9,968−35.5% | Reduced |
| Navellier & Associates Inc | 19,961 | $1.36M | 0.20% | +3,931+24.5% | Added |
| GTS Securities LLC | 20,426 | $1.39M | 0.03% | +20,426 | New |
| Dynamic Technology Lab Private Ltd | 21,023 | $1.43M | 0.15% | +21,023 | New |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 21,244 | $1.45M | 0.01% | −2,914−12.1% | Reduced |
| Diversified Trust Co | 21,549 | $1.47M | 0.05% | +643+3.1% | Added |
| New Mexico Educational Retirement Board | 22,100 | $1.51M | 0.06% | +22,100 | New |
| Janney Montgomery Scott LLC | 22,274 | $1.52M | 0.00% | +2,632+13.4% | Added |
| Linden Thomas Advisory Services, LLC | 22,609 | $1.54M | 0.29% | +1,027+4.8% | Added |
| Handelsbanken Fonder AB | 22,797 | $1.56M | 0.01% | +4,200+22.6% | Added |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 23,723 | $1.62M | 0.01% | −49,237−67.5% | Reduced |
| Two Sigma Investments, LP | 23,900 | $1.63M | 0.00% | +1,100+4.8% | Added |
| Northwestern Mutual Investment Management Company, LLC | 23,918 | $1.63M | 0.04% | +23,918 | New |
| China Universal Asset Management Co., Ltd. | 24,000 | $1.64M | 0.32% | +7,000+41.2% | Added |
| JB Capital LLC | 24,040 | $1.64M | 0.12% | +1,049+4.6% | Added |
| Yorktown Management & Research Co Inc | 24,600 | $1.68M | 1.75% | 00.0% | Unchanged |
| State of Michigan Retirement System | 25,800 | $1.76M | 0.01% | +25,800 | New |
| Creative Planning | 26,807 | $1.83M | 0.00% | +3,694+16.0% | Added |
| Thrivent Financial for Lutherans | 26,857 | $1.83M | 0.00% | −72,976−73.1% | Reduced |
| Teacher Retirement System of Texas | 27,357 | $1.87M | 0.01% | −20,984−43.4% | Reduced |
| Tower Research Capital LLC (TRC) | 27,423 | $1.87M | 0.02% | +25,985+1,807.0% | Added |
| Los Angeles Capital Management LLC | 28,835 | $1.97M | 0.01% | −4,420−13.3% | Reduced |
| STRS Ohio | 29,100 | $1.99M | 0.01% | −2,400−7.6% | Reduced |
| Centiva Capital, LP | 29,217 | $1.99M | 0.12% | +13,051+80.7% | Added |
| Advisor Group Holdings, Inc. | 30,017 | $2.05M | 0.00% | −5,660−15.9% | Reduced |
| Oregon Public Employees Retirement Fund | 30,400 | $2.07M | 0.04% | −1,989−6.1% | Reduced |
| Arizona State Retirement System | 30,508 | $2.08M | 0.02% | −483−1.6% | Reduced |
| Louisiana State Employees Retirement System | 30,700 | $2.10M | 0.04% | −24,800−44.7% | Reduced |
| Guggenheim Capital LLC | 30,953 | $2.11M | 0.02% | +3,996+14.8% | Added |
| State Board of Administration of Florida Retirement System | 31,193 | $2.13M | 0.00% | 00.0% | Unchanged |
| B. Metzler seel. Sohn & Co. AG | 32,007 | $2.18M | 0.03% | +6,875+27.4% | Added |
| Van Eck Associates Corp | 32,126 | $2.19M | 0.00% | +32,126 | New |
| Raymond James & Associates | 32,137 | $2.19M | 0.00% | +19,582+156.0% | Added |
| Prudential Financial Inc | 32,377 | $2.21M | 0.00% | −98,668−75.3% | Reduced |
| ProShare Advisors LLC | 32,967 | $2.25M | 0.01% | +6,929+26.6% | Added |
| Duality Advisers, LP | 33,227 | $2.27M | 0.24% | +33,227 | New |
| Chartwell Investment Partners, LLC | 33,429 | $2.28M | 0.08% | +4,053+13.8% | Added |
| Zweig-DiMenna Associates LLC | 34,125 | $2.33M | 0.27% | −91,625−72.9% | Reduced |
| Jennison Associates LLC | 34,331 | $2.34M | 0.00% | +5,129+17.6% | Added |
| Ameritas Investment Partners, Inc. | 34,783 | $2.37M | 0.09% | +24,048+224.0% | Added |
| Cambiar Investors LLC | 38,441 | $2.62M | 0.10% | 00.0% | Unchanged |
| Ensign Peak Advisors, Inc | 39,367 | $2.69M | 0.01% | +865+2.2% | Added |
| Envestnet Asset Management Inc | 40,718 | $2.78M | 0.00% | −2,095−4.9% | Reduced |
| American Century Companies Inc | 42,105 | $2.87M | 0.00% | +11,438+37.3% | Added |
| Concentric Capital Strategies, LP | 45,227 | $3.09M | 0.40% | −30,911−40.6% | Reduced |
| Franklin Resources Inc | 45,810 | $3.13M | 0.00% | −3,944−7.9% | Reduced |
| Comerica Bank | 45,869 | $3.13M | 0.01% | −7,087−13.4% | Reduced |
| DekaBank Deutsche Girozentrale | 46,673 | $3.19M | 0.01% | +43,400+1,326.0% | Added |
| Moody Aldrich Partners LLC | 48,815 | $3.33M | 0.60% | −18,221−27.2% | Reduced |
| Two Sigma Advisers, LP | 49,900 | $3.41M | 0.01% | −8,300−14.3% | Reduced |
| Janus Henderson Group PLC | 50,959 | $3.48M | 0.00% | −93−0.2% | Reduced |
| Yousif Capital Management, LLC | 51,270 | $3.50M | 0.04% | −5,343−9.4% | Reduced |
| Walleye Trading LLC | 51,697 | $3.53M | 0.05% | +13,359+34.8% | Added |
| AQR Capital Management LLC | 55,351 | $3.78M | 0.01% | −14,025−20.2% | Reduced |
| Engineers Gate Manager LP | 57,305 | $3.91M | 0.11% | +57,305 | New |
| State of Tennessee, Treasury Department | 58,936 | $4.02M | 0.02% | −8,768−13.0% | Reduced |
| Vident Advisory, LLC | 59,682 | $4.07M | 0.10% | +844+1.4% | Added |
| EAM Global Investors LLC | 61,106 | $4.17M | 1.01% | +61,106 | New |
| Russell Investments Group, Ltd. | 61,289 | $4.18M | 0.01% | −28,190−31.5% | Reduced |
| State of New Jersey Common Pension Fund D | 62,389 | $4.26M | 0.01% | 00.0% | Unchanged |
| Teachers Retirement System of the State of Kentucky | 62,628 | $4.28M | 0.04% | −664−1.0% | Reduced |
| Man Group plc | 63,047 | $4.30M | 0.01% | – | – |
| Lisanti Capital Growth, LLC | 64,590 | $4.41M | 1.04% | +64,590 | New |
| Rice Hall James & Associates, LLC | 65,466 | $4.47M | 0.26% | −16,625−20.3% | Reduced |
| Deutsche Bank AG | 66,005 | $4.50M | 0.00% | −3,571−5.1% | Reduced |
| Amalgamated Bank | 68,398 | $4.67M | 0.04% | +19,705+40.5% | Added |
| EAM Investors, LLC | 70,088 | $4.78M | 0.86% | +49,778+245.1% | Added |
| New York State Teachers Retirement System | 72,870 | $4.97M | 0.01% | −10,977−13.1% | Reduced |
| State of Wisconsin Investment Board | 73,266 | $5.00M | 0.01% | −41,128−36.0% | Reduced |
| Ghisallo Capital Management LLC | 75,506 | $5.15M | 0.53% | +75,506 | New |
| Jackson Square Partners, LLC | 78,606 | $5.36M | 0.17% | 00.0% | Unchanged |
| Investors Towarzystwo Funduszy Inwestycyjnych Spolka Akcyjna | 80,700 | $5.51M | 2.32% | 00.0% | Unchanged |
| Thornburg Investment Management Inc | 82,251 | $5.61M | 0.08% | −11,779−12.5% | Reduced |
| Stifel Financial Corp | 84,056 | $5.74M | 0.01% | −5,421−6.1% | Reduced |
| Royal Bank of Canada | 86,700 | $5.92M | 0.00% | +38,469+79.8% | Added |