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 |
|---|---|---|---|---|---|
| Royal Bank of Canada | 86,700 | $5.92M | 0.00% | +38,469+79.8% | Added |
| Stifel Financial Corp | 84,056 | $5.74M | 0.01% | −5,421−6.1% | Reduced |
| Thornburg Investment Management Inc | 82,251 | $5.61M | 0.08% | −11,779−12.5% | Reduced |
| Investors Towarzystwo Funduszy Inwestycyjnych Spolka Akcyjna | 80,700 | $5.51M | 2.32% | 00.0% | Unchanged |
| Jackson Square Partners, LLC | 78,606 | $5.36M | 0.17% | 00.0% | Unchanged |
| Ghisallo Capital Management LLC | 75,506 | $5.15M | 0.53% | +75,506 | New |
| State of Wisconsin Investment Board | 73,266 | $5.00M | 0.01% | −41,128−36.0% | Reduced |
| New York State Teachers Retirement System | 72,870 | $4.97M | 0.01% | −10,977−13.1% | Reduced |
| EAM Investors, LLC | 70,088 | $4.78M | 0.86% | +49,778+245.1% | Added |
| Amalgamated Bank | 68,398 | $4.67M | 0.04% | +19,705+40.5% | Added |
| Deutsche Bank AG | 66,005 | $4.50M | 0.00% | −3,571−5.1% | Reduced |
| Rice Hall James & Associates, LLC | 65,466 | $4.47M | 0.26% | −16,625−20.3% | Reduced |
| Lisanti Capital Growth, LLC | 64,590 | $4.41M | 1.04% | +64,590 | New |
| Man Group plc | 63,047 | $4.30M | 0.01% | – | – |
| Teachers Retirement System of the State of Kentucky | 62,628 | $4.28M | 0.04% | −664−1.0% | Reduced |
| State of New Jersey Common Pension Fund D | 62,389 | $4.26M | 0.01% | 00.0% | Unchanged |
| Russell Investments Group, Ltd. | 61,289 | $4.18M | 0.01% | −28,190−31.5% | Reduced |
| EAM Global Investors LLC | 61,106 | $4.17M | 1.01% | +61,106 | New |
| Vident Advisory, LLC | 59,682 | $4.07M | 0.10% | +844+1.4% | Added |
| State of Tennessee, Treasury Department | 58,936 | $4.02M | 0.02% | −8,768−13.0% | Reduced |
| Engineers Gate Manager LP | 57,305 | $3.91M | 0.11% | +57,305 | New |
| AQR Capital Management LLC | 55,351 | $3.78M | 0.01% | −14,025−20.2% | Reduced |
| Walleye Trading LLC | 51,697 | $3.53M | 0.05% | +13,359+34.8% | Added |
| Yousif Capital Management, LLC | 51,270 | $3.50M | 0.04% | −5,343−9.4% | Reduced |
| Janus Henderson Group PLC | 50,959 | $3.48M | 0.00% | −93−0.2% | Reduced |
| Two Sigma Advisers, LP | 49,900 | $3.41M | 0.01% | −8,300−14.3% | Reduced |
| Moody Aldrich Partners LLC | 48,815 | $3.33M | 0.60% | −18,221−27.2% | Reduced |
| DekaBank Deutsche Girozentrale | 46,673 | $3.19M | 0.01% | +43,400+1,326.0% | Added |
| Comerica Bank | 45,869 | $3.13M | 0.01% | −7,087−13.4% | Reduced |
| Franklin Resources Inc | 45,810 | $3.13M | 0.00% | −3,944−7.9% | Reduced |
| Concentric Capital Strategies, LP | 45,227 | $3.09M | 0.40% | −30,911−40.6% | Reduced |
| American Century Companies Inc | 42,105 | $2.87M | 0.00% | +11,438+37.3% | Added |
| Envestnet Asset Management Inc | 40,718 | $2.78M | 0.00% | −2,095−4.9% | Reduced |
| Ensign Peak Advisors, Inc | 39,367 | $2.69M | 0.01% | +865+2.2% | Added |
| Cambiar Investors LLC | 38,441 | $2.62M | 0.10% | 00.0% | Unchanged |
| Ameritas Investment Partners, Inc. | 34,783 | $2.37M | 0.09% | +24,048+224.0% | Added |
| Jennison Associates LLC | 34,331 | $2.34M | 0.00% | +5,129+17.6% | Added |
| Zweig-DiMenna Associates LLC | 34,125 | $2.33M | 0.27% | −91,625−72.9% | Reduced |
| Chartwell Investment Partners, LLC | 33,429 | $2.28M | 0.08% | +4,053+13.8% | Added |
| Duality Advisers, LP | 33,227 | $2.27M | 0.24% | +33,227 | New |
| ProShare Advisors LLC | 32,967 | $2.25M | 0.01% | +6,929+26.6% | Added |
| Prudential Financial Inc | 32,377 | $2.21M | 0.00% | −98,668−75.3% | Reduced |
| Raymond James & Associates | 32,137 | $2.19M | 0.00% | +19,582+156.0% | Added |
| Van Eck Associates Corp | 32,126 | $2.19M | 0.00% | +32,126 | New |
| B. Metzler seel. Sohn & Co. AG | 32,007 | $2.18M | 0.03% | +6,875+27.4% | Added |
| State Board of Administration of Florida Retirement System | 31,193 | $2.13M | 0.00% | 00.0% | Unchanged |
| Guggenheim Capital LLC | 30,953 | $2.11M | 0.02% | +3,996+14.8% | Added |
| Louisiana State Employees Retirement System | 30,700 | $2.10M | 0.04% | −24,800−44.7% | Reduced |
| Arizona State Retirement System | 30,508 | $2.08M | 0.02% | −483−1.6% | Reduced |
| Oregon Public Employees Retirement Fund | 30,400 | $2.07M | 0.04% | −1,989−6.1% | Reduced |
| Advisor Group Holdings, Inc. | 30,017 | $2.05M | 0.00% | −5,660−15.9% | Reduced |
| Centiva Capital, LP | 29,217 | $1.99M | 0.12% | +13,051+80.7% | Added |
| STRS Ohio | 29,100 | $1.99M | 0.01% | −2,400−7.6% | Reduced |
| Los Angeles Capital Management LLC | 28,835 | $1.97M | 0.01% | −4,420−13.3% | Reduced |
| Tower Research Capital LLC (TRC) | 27,423 | $1.87M | 0.02% | +25,985+1,807.0% | Added |
| Teacher Retirement System of Texas | 27,357 | $1.87M | 0.01% | −20,984−43.4% | Reduced |
| Thrivent Financial for Lutherans | 26,857 | $1.83M | 0.00% | −72,976−73.1% | Reduced |
| Creative Planning | 26,807 | $1.83M | 0.00% | +3,694+16.0% | Added |
| State of Michigan Retirement System | 25,800 | $1.76M | 0.01% | +25,800 | New |
| Yorktown Management & Research Co Inc | 24,600 | $1.68M | 1.75% | 00.0% | Unchanged |
| JB Capital LLC | 24,040 | $1.64M | 0.12% | +1,049+4.6% | Added |
| China Universal Asset Management Co., Ltd. | 24,000 | $1.64M | 0.32% | +7,000+41.2% | Added |
| Northwestern Mutual Investment Management Company, LLC | 23,918 | $1.63M | 0.04% | +23,918 | New |
| Two Sigma Investments, LP | 23,900 | $1.63M | 0.00% | +1,100+4.8% | Added |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 23,723 | $1.62M | 0.01% | −49,237−67.5% | Reduced |
| Handelsbanken Fonder AB | 22,797 | $1.56M | 0.01% | +4,200+22.6% | Added |
| Linden Thomas Advisory Services, LLC | 22,609 | $1.54M | 0.29% | +1,027+4.8% | Added |
| Janney Montgomery Scott LLC | 22,274 | $1.52M | 0.00% | +2,632+13.4% | Added |
| New Mexico Educational Retirement Board | 22,100 | $1.51M | 0.06% | +22,100 | New |
| Diversified Trust Co | 21,549 | $1.47M | 0.05% | +643+3.1% | Added |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 21,244 | $1.45M | 0.01% | −2,914−12.1% | Reduced |
| Dynamic Technology Lab Private Ltd | 21,023 | $1.43M | 0.15% | +21,023 | New |
| GTS Securities LLC | 20,426 | $1.39M | 0.03% | +20,426 | New |
| Navellier & Associates Inc | 19,961 | $1.36M | 0.20% | +3,931+24.5% | Added |
| QRG Capital Management, Inc. | 18,087 | $1.23M | 0.02% | −9,968−35.5% | Reduced |
| Bailard, Inc. | 17,785 | $1.21M | 0.04% | +630+3.7% | Added |
| Pathstone Holdings, LLC | 17,556 | $1.20M | 0.01% | +17,556 | New |
| Chesapeake Capital Corp | 17,391 | $1.19M | 0.87% | +17,391 | New |
| Walleye Capital LLC | 17,357 | $1.18M | 0.02% | −65,877−79.1% | Reduced |
| Seven Eight Capital, LP | 16,999 | $1.16M | 0.13% | +16,999 | New |
| ClariVest Asset Management LLC | 16,683 | $1.14M | 0.06% | −2,900−14.8% | Reduced |
| Pacer Advisors, Inc. | 16,160 | $1.10M | 0.00% | +15,609+2,832.8% | Added |
| Xponance, Inc. | 15,659 | $1.07M | 0.01% | +9,260+144.7% | Added |
| Lazard Asset Management LLC | 14,515 | $990.0K | 0.00% | +10,140+231.8% | Added |
| BNC Wealth Management, LLC | 14,346 | $979.1K | 0.46% | 00.0% | Unchanged |
| US Bancorp | 13,955 | $952.4K | 0.00% | −436−3.0% | Reduced |
| Cetera Advisor Networks LLC | 13,824 | $943.5K | 0.01% | +1,630+13.4% | Added |
| JustInvest LLC | 13,459 | $918.6K | 0.02% | +1,807+15.5% | Added |
| Meritage Portfolio Management | 13,290 | $907.0K | 0.06% | +684+5.4% | Added |
| Hanseatic Management Services Inc | 13,115 | $895.1K | 1.56% | −1,845−12.3% | Reduced |
| Aquatic Capital Management LLC | 13,000 | $887.0K | 0.02% | +13,000 | New |
| Public Employees Retirement Association of Colorado | 12,970 | $885.0K | 0.00% | −1,201−8.5% | Reduced |
| Mariner, LLC | 12,578 | $858.4K | 0.00% | +1,855+17.3% | Added |
| Federated Hermes, Inc. | 12,189 | $831.9K | 0.00% | +12,189 | New |
| Pictet Asset Management Holding SA | 12,178 | $831.1K | 0.00% | +17+0.1% | Added |
| Cambridge Investment Research Advisors, Inc. | 11,987 | $818.0K | 0.00% | −67−0.6% | Reduced |
| Northwestern Mutual Wealth Management Co | 11,645 | $794.8K | 0.00% | +1,500+14.8% | Added |
| State of Alaska, Department of Revenue | 11,610 | $792.0K | 0.01% | −56,337−82.9% | Reduced |
| Barometer Capital Management Inc. | 11,600 | $791.7K | 0.22% | +11,600 | New |
| Profund Advisors LLC | 11,272 | $769.3K | 0.03% | +264+2.4% | Added |