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, Q3 2023
Institutional positions in Rambus Inc as of Sep 30, 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
- 350
- −41 vs. Q2 2023
- Shares held
- 98.0M
- +2.29M (+2.4%) vs. Q2 2023
- Total value
- $5.48B
- −$656.3M (−10.7%) vs. Q2 2023
- New holders
- 40
- 153 more added
- Sold out
- 81
- 115 more reduced
2 institutions that held it in Q2 2023 haven't filed for Q3 2023 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q2 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, Q3 2023
Shares, value and share of portfolio for each institution holding Rambus Inc; share changes are against Q2 2023.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Caption Management, LLC | 28,701 | $1.60M | 0.21% | −1,638−5.4% | Reduced |
| Jennison Associates LLC | 29,202 | $1.63M | 0.00% | +2,406+9.0% | Added |
| Chartwell Investment Partners, LLC | 29,376 | $1.64M | 0.06% | +10,037+51.9% | Added |
| Qube Research & Technologies Ltd | 29,875 | $1.67M | 0.00% | +26,380+754.8% | Added |
| Harvest Investment Services, LLC | 30,611 | $1.71M | 1.10% | +9,039+41.9% | Added |
| American Century Companies Inc | 30,667 | $1.71M | 0.00% | −5,363−14.9% | Reduced |
| Arizona State Retirement System | 30,991 | $1.73M | 0.01% | +423+1.4% | Added |
| Simplex Trading, LLC | 31,157 | $1.74M | 0.06% | +15,326+96.8% | Added |
| State Board of Administration of Florida Retirement System | 31,193 | $1.74M | 0.00% | +220+0.7% | Added |
| STRS Ohio | 31,500 | $1.76M | 0.01% | +600+1.9% | Added |
| Victory Capital Management Inc | 32,359 | $1.81M | 0.00% | +4,231+15.0% | Added |
| Oregon Public Employees Retirement Fund | 32,389 | $1.81M | 0.02% | −1,600−4.7% | Reduced |
| Los Angeles Capital Management LLC | 33,255 | $1.86M | 0.01% | −73,191−68.8% | Reduced |
| Advisor Group Holdings, Inc. | 35,677 | $1.99M | 0.00% | +667+1.9% | Added |
| Walleye Trading LLC | 38,338 | $2.14M | 0.05% | −120,848−75.9% | Reduced |
| Cambiar Investors LLC | 38,441 | $2.14M | 0.09% | +4,687+13.9% | Added |
| Ensign Peak Advisors, Inc | 38,502 | $2.15M | 0.00% | −16,105−29.5% | Reduced |
| Knights of Columbus Asset Advisors LLC | 39,619 | $2.21M | 0.20% | +39,619 | New |
| Maryland State Retirement & Pension System | 40,196 | $2.24M | 0.05% | −2,210−5.2% | Reduced |
| Envestnet Asset Management Inc | 42,813 | $2.39M | 0.00% | −3,830−8.2% | Reduced |
| Royal Bank of Canada | 48,231 | $2.69M | 0.00% | +16,406+51.6% | Added |
| Teacher Retirement System of Texas | 48,341 | $2.70M | 0.02% | +5,783+13.6% | Added |
| Amalgamated Bank | 48,693 | $2.72M | 0.02% | −723−1.5% | Reduced |
| Franklin Resources Inc | 49,754 | $2.78M | 0.00% | +1,099+2.3% | Added |
| Janus Henderson Group PLC | 51,052 | $2.85M | 0.00% | −37,421−42.3% | Reduced |
| Comerica Bank | 52,956 | $2.95M | 0.02% | +52,956 | New |
| Louisiana State Employees Retirement System | 55,500 | $3.10M | 0.07% | −1,600−2.8% | Reduced |
| Yousif Capital Management, LLC | 56,613 | $3.16M | 0.04% | −3,449−5.7% | Reduced |
| MetLife Investment Management | 57,491 | $3.21M | 0.02% | 00.0% | Unchanged |
| Two Sigma Advisers, LP | 58,200 | $3.25M | 0.01% | +35,300+154.1% | Added |
| Empowered Funds, LLC | 58,372 | $3.26M | 0.10% | +10,891+22.9% | Added |
| Vident Advisory, LLC | 58,838 | $3.28M | 0.10% | +58,838 | New |
| American International Group, Inc. | 59,863 | $3.34M | 0.02% | +1,289+2.2% | Added |
| Segall Bryant & Hamill, LLC | 61,175 | $3.41M | 0.04% | +9,984+19.5% | Added |
| State of New Jersey Common Pension Fund D | 62,389 | $3.48M | 0.01% | 00.0% | Unchanged |
| Value Aligned Research Advisors, LLC | 62,790 | $3.50M | 1.10% | 00.0% | Unchanged |
| Teachers Retirement System of the State of Kentucky | 63,292 | $3.53M | 0.04% | 00.0% | Unchanged |
| Moody Aldrich Partners LLC | 67,036 | $3.74M | 0.71% | −3,034−4.3% | Reduced |
| State of Tennessee, Treasury Department | 67,704 | $3.78M | 0.02% | −3,142−4.4% | Reduced |
| State of Alaska, Department of Revenue | 67,947 | $3.79M | 0.05% | −3,670−5.1% | Reduced |
| AQR Capital Management LLC | 69,376 | $3.87M | 0.01% | −61,611−47.0% | Reduced |
| Deutsche Bank AG | 69,576 | $3.88M | 0.00% | +8,037+13.1% | Added |
| Manufacturers Life Insurance Company, The | 69,658 | $3.89M | 0.00% | +25,411+57.4% | Added |
| Illinois Municipal Retirement Fund | 71,917 | $4.01M | 0.07% | +71,917 | New |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 72,960 | $4.07M | 0.03% | −50,075−40.7% | Reduced |
| Concentric Capital Strategies, LP | 76,138 | $4.25M | 0.48% | +33,882+80.2% | Added |
| Mutual of America Capital Management LLC | 77,356 | $4.32M | 0.05% | +56,097+263.9% | Added |
| Jackson Square Partners, LLC | 78,606 | $4.39M | 0.15% | 00.0% | Unchanged |
| Investors Towarzystwo Funduszy Inwestycyjnych Spolka Akcyjna | 80,700 | $4.50M | 2.42% | −2,568−3.1% | Reduced |
| Rice Hall James & Associates, LLC | 82,091 | $4.58M | 0.29% | −907−1.1% | Reduced |
| Walleye Capital LLC | 83,234 | $4.64M | 0.07% | +83,234 | New |
| New York State Teachers Retirement System | 83,847 | $4.68M | 0.01% | +13,400+19.0% | Added |
| Russell Investments Group, Ltd. | 89,479 | $4.99M | 0.01% | −9,735−9.8% | Reduced |
| Stifel Financial Corp | 89,477 | $4.99M | 0.01% | −1,601−1.8% | Reduced |
| Texas Permanent School Fund | 92,683 | $5.17M | 0.05% | −3,153−3.3% | Reduced |
| Thornburg Investment Management Inc | 94,030 | $5.25M | 0.09% | +16,784+21.7% | Added |
| Axiom Investors LLC | 95,678 | $5.34M | 0.08% | −28,392−22.9% | Reduced |
| LPL Financial LLC | 97,005 | $5.41M | 0.00% | −5,393−5.3% | Reduced |
| Thrivent Financial for Lutherans | 99,833 | $5.57M | 0.01% | −4,291−4.1% | Reduced |
| Jane Street Group, LLC | 100,370 | $5.60M | 0.01% | +19,926+24.8% | Added |
| State of Wisconsin Investment Board | 114,394 | $6.38M | 0.02% | +22,515+24.5% | Added |
| Capital Fund Management S.A. | 115,134 | $6.42M | 0.09% | +90,069+359.3% | Added |
| California State Teachers Retirement System | 120,330 | $6.71M | 0.01% | −11,734−8.9% | Reduced |
| Susquehanna International Group, LLP | 123,239 | $6.88M | 0.01% | −37,670−23.4% | Reduced |
| Jupiter Asset Management Ltd | 124,518 | $6.95M | 0.08% | −154,017−55.3% | Reduced |
| Zweig-DiMenna Associates LLC | 125,750 | $7.02M | 0.84% | +65,000+107.0% | Added |
| Great West Life Assurance Co | 126,080 | $7.03M | 0.02% | +1,257+1.0% | Added |
| Crestline Management, LP | 127,027 | $7.09M | 0.85% | −19,600−13.4% | Reduced |
| UBS Asset Management Americas Inc | 127,485 | $7.11M | 0.00% | −6,910−5.1% | Reduced |
| Wells Fargo & Company | 128,546 | $7.17M | 0.00% | −13,038−9.2% | Reduced |
| Prudential Financial Inc | 131,045 | $7.31M | 0.01% | −4,084−3.0% | Reduced |
| Public Sector Pension Investment Board | 134,884 | $7.53M | 0.06% | −58,318−30.2% | Reduced |
| Citadel Advisors LLC | 137,751 | $7.69M | 0.01% | +126,506+1,125.0% | Added |
| Alliancebernstein L.P. | 149,949 | $8.37M | 0.00% | −520.0% | Reduced |
| Stephens Investment Management Group LLC | 164,794 | $9.19M | 0.15% | +164,794 | New |
| WCM Investment Management, LLC | 164,830 | $9.20M | 0.03% | +164,830 | New |
| Primecap Management Co | 166,163 | $9.27M | 0.01% | −29,200−14.9% | Reduced |
| Castleark Management LLC | 168,760 | $9.42M | 0.48% | +19,060+12.7% | Added |
| Epoch Investment Partners, Inc. | 173,087 | $9.66M | 0.06% | −34,837−16.8% | Reduced |
| Amundi | 172,307 | $9.86M | 0.00% | −41,708−19.5% | Reduced |
| Westwood Holdings Group Inc. | 181,799 | $10.1M | 0.09% | −35,967−16.5% | Reduced |
| HighTower Advisors, LLC | 184,632 | $10.3M | 0.02% | +750.0% | Added |
| Squarepoint Ops LLC | 192,088 | $10.7M | 0.05% | +192,088 | New |
| Barington Capital Group, L.P. | 200,100 | $11.2M | 16.02% | −50,000−20.0% | Reduced |
| Millennium Management LLC | 202,061 | $11.3M | 0.01% | −281,525−58.2% | Reduced |
| SEI Investments Co | 206,405 | $11.5M | 0.02% | +3,974+2.0% | Added |
| D. E. Shaw & Co., Inc. | 207,310 | $11.6M | 0.02% | −412,482−66.6% | Reduced |
| Royce & Associates LP | 209,661 | $11.7M | 0.12% | +13,454+6.9% | Added |
| Man Group plc | – | $11.8M | 0.04% | – | – |
| California Public Employees Retirement System | 215,853 | $12.0M | 0.01% | +52,445+32.1% | Added |
| Credit Suisse AG | 218,421 | $12.2M | 0.01% | −50,545−18.8% | Reduced |
| Glenmede Trust Co NA | 226,318 | $12.6M | 0.07% | +7,922+3.6% | Added |
| UBS Group AG | 227,776 | $12.7M | 0.01% | +95,362+72.0% | Added |
| Summit Partners Public Asset Management, LLC | 231,708 | $12.9M | 0.82% | +119,343+106.2% | Added |
| Swiss National Bank | 239,300 | $13.4M | 0.01% | +2,300+1.0% | Added |
| Mesirow Institutional Investment Management, Inc. | 240,656 | $13.4M | 1.36% | +69,895+40.9% | Added |
| First Trust Advisors LP | 241,427 | $13.5M | 0.02% | +121,382+101.1% | Added |
| Natixis Advisors, L.P. | 246,343 | $13.7M | 0.04% | +7,375+3.1% | Added |
| AXA S.A. | 254,800 | $14.2M | 0.05% | +6,900+2.8% | Added |
| New York State Common Retirement Fund | 259,019 | $14.5M | 0.02% | −10,491−3.9% | Reduced |