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, Q3 2021
Institutional positions in Rambus Inc as of Sep 30, 2021. 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
- 236
- +20 vs. Q2 2021
- Shares held
- 93.4M
- −3.16M (−3.3%) vs. Q2 2021
- Total value
- $2.07B
- −$216.2M (−9.4%) vs. Q2 2021
- New holders
- 35
- 65 more added
- Sold out
- 15
- 83 more reduced
3 institutions that held it in Q2 2021 haven't filed for Q3 2021 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q2 2021: 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, Q3 2021
Shares, value and share of portfolio for each institution holding Rambus Inc; share changes are against Q2 2021.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Aigen Investment Management, LP | 17,041 | $378.0K | 0.07% | +17,041 | New |
| Capital Fund Management S.A. | 17,039 | $378.3K | 0.01% | +1,853+12.2% | Added |
| Natixis Advisors, L.P. | 17,155 | $381.0K | 0.00% | +568+3.4% | Added |
| Wolverine Trading, LLC | 17,385 | $388.0K | 0.01% | +232+1.4% | Added |
| Teacher Retirement System of Texas | 18,360 | $408.0K | 0.00% | +3,500+23.6% | Added |
| Quantinno Capital Management LP | 19,148 | $425.0K | 0.47% | 00.0% | Unchanged |
| Yorktown Management & Research Co Inc | 19,600 | $435.0K | 0.33% | 00.0% | Unchanged |
| Public Employees Retirement Association of Colorado | 19,581 | $435.0K | 0.00% | 00.0% | Unchanged |
| Schonfeld Strategic Advisors LLC | 19,700 | $437.0K | 0.00% | −547,086−96.5% | Reduced |
| Jaffetilchin Investment Partners, LLC | 20,443 | $454.0K | 0.05% | +20,443 | New |
| AMP Capital Investors Ltd | 20,800 | $462.0K | 0.00% | +20,800 | New |
| IndexIQ Advisors LLC | 23,128 | $513.0K | 0.02% | +2,317+11.1% | Added |
| Tudor Investment Corp Et Al | 25,359 | $563.0K | 0.01% | +25,359 | New |
| Handelsbanken Fonder AB | 26,297 | $584.0K | 0.00% | 00.0% | Unchanged |
| Metropolitan Life Insurance Co | 28,431 | $631.2K | 0.01% | −3,001−9.5% | Reduced |
| Arizona State Retirement System | 30,646 | $680.0K | 0.01% | −321−1.0% | Reduced |
| Gotham Asset Management, LLC | 30,720 | $682.0K | 0.03% | +11,174+57.2% | Added |
| Jacobs Levy Equity Management, Inc | 31,200 | $693.0K | 0.00% | +31,200 | New |
| Boothbay Fund Management, LLC | 31,297 | $695.0K | 0.03% | +5,607+21.8% | Added |
| Ergoteles LLC | 31,500 | $699.0K | 0.03% | +31,500 | New |
| Teachers Retirement System of the State of Kentucky | 32,312 | $717.0K | 0.01% | 00.0% | Unchanged |
| Marshall Wace, LLP | 32,482 | $721.0K | 0.00% | +32,482 | New |
| ETF Managers Group, LLC | 33,476 | $746.0K | 0.01% | +2,570+8.3% | Added |
| Boston Partners | 34,644 | $769.0K | 0.00% | −3,995−10.3% | Reduced |
| Price T Rowe Associates Inc | 35,092 | $779.0K | 0.00% | +7,117+25.4% | Added |
| Bank of Montreal | 35,784 | $809.0K | 0.00% | −2,165−5.7% | Reduced |
| MetLife Investment Management | 37,951 | $842.5K | 0.01% | 00.0% | Unchanged |
| EAM Global Investors LLC | 38,111 | $846.0K | 0.20% | −63,023−62.3% | Reduced |
| Robeco Institutional Asset Management B.V. | 38,401 | $852.0K | 0.00% | +23,796+162.9% | Added |
| Jane Street Group, LLC | 40,805 | $906.0K | 0.00% | −5,152−11.2% | Reduced |
| Maryland State Retirement & Pension System | 42,848 | $960.0K | 0.03% | +42,848 | New |
| Oregon Public Employees Retirement Fund | 45,362 | $1.01M | 0.01% | −200−0.4% | Reduced |
| Martingale Asset Management L P | 45,873 | $1.02M | 0.01% | +24,999+119.8% | Added |
| Gyon Technologies Capital Management, LP | 46,114 | $1.02M | 0.28% | +29,836+183.3% | Added |
| AQR Capital Management LLC | 48,141 | $1.07M | 0.00% | −23,763−33.0% | Reduced |
| Shelter Haven Capital Management, L.P. | 50,000 | $1.11M | 0.35% | −549,302−91.7% | Reduced |
| Truist Financial Corp | 50,600 | $1.12M | 0.00% | −3,692−6.8% | Reduced |
| SEI Investments Co | 52,224 | $1.16M | 0.00% | −24,722−32.1% | Reduced |
| Amalgamated Bank | 52,194 | $1.16M | 0.01% | −2,288−4.2% | Reduced |
| Connor, Clark & Lunn Investment Management Ltd. | 52,388 | $1.16M | 0.01% | +52,388 | New |
| Louisiana State Employees Retirement System | 52,500 | $1.17M | 0.03% | +1,800+3.6% | Added |
| STRS Ohio | 53,000 | $1.18M | 0.00% | −3,700−6.5% | Reduced |
| Qube Research & Technologies Ltd | 54,423 | $1.21M | 0.02% | +54,423 | New |
| Manufacturers Life Insurance Company, The | 55,768 | $1.24M | 0.00% | −7,347−11.6% | Reduced |
| Victory Capital Management Inc | 58,283 | $1.29M | 0.00% | −4,320−6.9% | Reduced |
| New York State Teachers Retirement System | 59,061 | $1.31M | 0.00% | +2,882+5.1% | Added |
| Los Angeles Capital Management LLC | 60,932 | $1.35M | 0.01% | +2,172+3.7% | Added |
| Arrowstreet Capital, Limited Partnership | 61,600 | $1.37M | 0.00% | +61,600 | New |
| State Board of Administration of Florida Retirement System | 61,872 | $1.37M | 0.00% | −14,292−18.8% | Reduced |
| Richard Bernstein Advisors LLC | 61,899 | $1.37M | 0.03% | +11,948+23.9% | Added |
| Canada Pension Plan Investment Board | 66,000 | $1.47M | 0.00% | +66,000 | New |
| American International Group, Inc. | 68,119 | $1.51M | 0.01% | −4,701−6.5% | Reduced |
| Guggenheim Capital LLC | 70,587 | $1.57M | 0.01% | +26,889+61.5% | Added |
| Voya Investment Management LLC | 73,901 | $1.64M | 0.00% | −674−0.9% | Reduced |
| State of Alaska, Department of Revenue | 79,401 | $1.76M | 0.02% | +1,579+2.0% | Added |
| Texas Permanent School Fund | 80,555 | $1.79M | 0.02% | −3,287−3.9% | Reduced |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 82,567 | $1.83M | 0.02% | −3,771−4.4% | Reduced |
| Ziegler Capital Management, LLC | 82,746 | $1.84M | 0.07% | +174+0.2% | Added |
| State of Tennessee, Treasury Department | 83,081 | $1.84M | 0.01% | −10,635−11.3% | Reduced |
| Skandinaviska Enskilda Banken AB (publ) | 87,500 | $1.94M | 0.01% | +29,000+49.6% | Added |
| Thrivent Financial for Lutherans | 88,022 | $1.95M | 0.00% | −3,951−4.3% | Reduced |
| Citigroup Inc | 90,015 | $2.00M | 0.00% | −19,068−17.5% | Reduced |
| Stifel Financial Corp | 90,489 | $2.01M | 0.00% | +741+0.8% | Added |
| Great West Life Assurance Co | 93,489 | $2.09M | 0.00% | −3,341−3.5% | Reduced |
| Verition Fund Management LLC | 100,424 | $2.23M | 0.03% | −49,576−33.1% | Reduced |
| Comerica Bank | 98,963 | $2.25M | 0.01% | −6,573−6.2% | Reduced |
| Ensign Peak Advisors, Inc | 102,357 | $2.27M | 0.00% | 00.0% | Unchanged |
| State of New Jersey Common Pension Fund D | 112,562 | $2.50M | 0.01% | −22,490−16.7% | Reduced |
| Prudential Financial Inc | 116,701 | $2.59M | 0.00% | −6,011−4.9% | Reduced |
| Cambiar Investors LLC | 117,694 | $2.61M | 0.09% | −31,104−20.9% | Reduced |
| Cubist Systematic Strategies, LLC | 121,970 | $2.71M | 0.03% | +45,361+59.2% | Added |
| Schroder Investment Management Group | 125,345 | $2.78M | 0.00% | −3,679−2.9% | Reduced |
| Captrust Financial Advisors | 135,149 | $3.00M | 0.02% | +127,970+1,782.6% | Added |
| UBS Asset Management Americas Inc | 136,755 | $3.04M | 0.00% | +3,633+2.7% | Added |
| AlphaCrest Capital Management LLC | 139,778 | $3.10M | 0.16% | +124,690+826.4% | Added |
| Wells Fargo & Company | 140,474 | $3.12M | 0.00% | −22,181−13.6% | Reduced |
| California State Teachers Retirement System | 150,745 | $3.35M | 0.00% | −3,691−2.4% | Reduced |
| LPL Financial LLC | 152,344 | $3.38M | 0.00% | −12,004−7.3% | Reduced |
| Putnam Investments LLC | 152,740 | $3.39M | 0.01% | −35,960−19.1% | Reduced |
| Crestline Management, LP | 161,171 | $3.58M | 0.34% | +24,568+18.0% | Added |
| Alliancebernstein L.P. | 164,758 | $3.66M | 0.00% | −11,970−6.8% | Reduced |
| First Trust Advisors LP | 164,872 | $3.66M | 0.00% | +73,588+80.6% | Added |
| BNP Paribas Arbitrage, SA | 174,680 | $3.88M | 0.01% | +15,566+9.8% | Added |
| Alexandria Capital, LLC | 180,000 | $4.00M | 0.37% | 00.0% | Unchanged |
| HRT Financial LP | 191,961 | $4.26M | 0.03% | +154,925+418.3% | Added |
| SG Americas Securities, LLC | 208,158 | $4.62M | 0.03% | +199,385+2,272.7% | Added |
| Renaissance Technologies LLC | 208,860 | $4.64M | 0.01% | −760,200−78.4% | Reduced |
| Public Sector Pension Investment Board | 232,669 | $5.17M | 0.03% | −1,143−0.5% | Reduced |
| Swiss National Bank | 248,600 | $5.52M | 0.00% | −2,500−1.0% | Reduced |
| Royal Bank of Canada | 279,667 | $6.21M | 0.00% | +9,338+3.5% | Added |
| Primecap Management Co | 286,263 | $6.36M | 0.00% | −9,026−3.1% | Reduced |
| Goldman Sachs Group Inc | 286,850 | $6.37M | 0.00% | −38,093−11.7% | Reduced |
| Mirae Asset Global Investments Co., Ltd. | 288,199 | $6.40M | 0.02% | −6,142−2.1% | Reduced |
| Parametric Portfolio Associates LLC | 293,983 | $6.53M | 0.00% | −101,424−25.7% | Reduced |
| Two Sigma Investments, LP | 295,101 | $6.55M | 0.02% | −59,002−16.7% | Reduced |
| Legal & General Group Plc | 309,474 | $6.87M | 0.00% | +15,688+5.3% | Added |
| Rhumbline Advisers | 310,158 | $6.89M | 0.01% | −50,213−13.9% | Reduced |
| Bank of America Corp | 312,930 | $6.95M | 0.00% | +177,003+130.2% | Added |
| AXA S.A. | 315,100 | $7.00M | 0.02% | 00.0% | Unchanged |
| Deutsche Bank AG | 323,243 | $7.18M | 0.00% | +202,910+168.6% | Added |