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, Q1 2024
Institutional positions in Rambus Inc as of Mar 31, 2024. 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
- 375
- −21 vs. Q4 2023
- Shares held
- 97.3M
- +747.6K (+0.8%) vs. Q4 2023
- Total value
- $6.00B
- −$592.3M (−9.0%) vs. Q4 2023
- New holders
- 51
- 153 more added
- Sold out
- 72
- 135 more reduced
4 institutions that held it in Q4 2023 haven't filed for Q1 2024 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 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 | 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, Q1 2024
Shares, value and share of portfolio for each institution holding Rambus Inc; share changes are against Q4 2023.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Magnetar Financial LLC | 20,855 | $1.29M | 0.03% | +20,855 | New |
| Los Angeles Capital Management LLC | 21,702 | $1.34M | 0.00% | −7,133−24.7% | Reduced |
| Leonteq Securities AG | 21,713 | $1.34M | 0.18% | +19,086+726.5% | Added |
| New Mexico Educational Retirement Board | 22,100 | $1.37M | 0.05% | 00.0% | Unchanged |
| Linden Thomas Advisory Services, LLC | 22,656 | $1.40M | 0.22% | +47+0.2% | Added |
| Janney Montgomery Scott LLC | 22,785 | $1.41M | 0.00% | +511+2.3% | Added |
| Handelsbanken Fonder AB | 22,797 | $1.41M | 0.01% | 00.0% | Unchanged |
| Campbell Newman Asset Management Inc | 22,963 | $1.42M | 0.12% | +22,963 | New |
| Advisor Group Holdings, Inc. | 22,977 | $1.42M | 0.00% | −7,040−23.5% | Reduced |
| Dynamic Technology Lab Private Ltd | 23,103 | $1.43M | 0.15% | +2,080+9.9% | Added |
| Diversified Trust Co | 23,199 | $1.43M | 0.04% | +1,650+7.7% | Added |
| Teacher Retirement System of Texas | 23,269 | $1.44M | 0.01% | −4,088−14.9% | Reduced |
| Cetera Investment Advisers | 23,722 | $1.47M | 0.00% | +23,722 | New |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 23,782 | $1.47M | 0.01% | +59+0.2% | Added |
| GTS Securities LLC | 23,809 | $1.47M | 0.04% | +3,383+16.6% | Added |
| Northwestern Mutual Investment Management Company, LLC | 23,979 | $1.48M | 0.04% | +61+0.3% | Added |
| JB Capital LLC | 24,909 | $1.54M | 0.10% | +869+3.6% | Added |
| Toroso Investments, LLC | 25,082 | $1.55M | 0.03% | +14,475+136.5% | Added |
| LMR Partners LLP | 26,318 | $1.63M | 0.04% | +19,118+265.5% | Added |
| STRS Ohio | 26,400 | $1.63M | 0.01% | −2,700−9.3% | Reduced |
| State of Michigan Retirement System | 26,400 | $1.63M | 0.01% | +600+2.3% | Added |
| Oregon Public Employees Retirement Fund | 26,600 | $1.64M | 0.03% | −3,800−12.5% | Reduced |
| Creative Planning | 26,667 | $1.65M | 0.00% | −140−0.5% | Reduced |
| Thrivent Financial for Lutherans | 26,942 | $1.67M | 0.00% | +85+0.3% | Added |
| Pathstone Holdings, LLC | 27,029 | $1.67M | 0.01% | +9,473+54.0% | Added |
| Bank of Montreal | 28,030 | $1.76M | 0.00% | −77,481−73.4% | Reduced |
| State Board of Administration of Florida Retirement System | 35,143 | $1.80M | 0.00% | +3,950+12.7% | Added |
| Bailard, Inc. | 29,428 | $1.82M | 0.05% | +11,643+65.5% | Added |
| Arizona State Retirement System | 29,546 | $1.83M | 0.01% | −962−3.2% | Reduced |
| Pacer Advisors, Inc. | 29,702 | $1.84M | 0.00% | +13,542+83.8% | Added |
| Louisiana State Employees Retirement System | 30,900 | $1.91M | 0.04% | +200+0.7% | Added |
| Centiva Capital, LP | 33,404 | $2.06M | 0.12% | +4,187+14.3% | Added |
| Raymond James & Associates | 33,675 | $2.08M | 0.00% | +1,538+4.8% | Added |
| Chartwell Investment Partners, LLC | 34,249 | $2.12M | 0.07% | +820+2.5% | Added |
| Ameritas Investment Partners, Inc. | 34,489 | $2.13M | 0.07% | −294−0.8% | Reduced |
| Algert Global LLC | 37,260 | $2.30M | 0.09% | +37,260 | New |
| Cambiar Investors LLC | 37,444 | $2.31M | 0.09% | −997−2.6% | Reduced |
| Ensign Peak Advisors, Inc | 37,476 | $2.32M | 0.00% | −1,891−4.8% | Reduced |
| Duality Advisers, LP | 37,548 | $2.32M | 0.23% | +4,321+13.0% | Added |
| ProShare Advisors LLC | 37,659 | $2.33M | 0.01% | +4,692+14.2% | Added |
| Jennison Associates LLC | 40,454 | $2.50M | 0.00% | +6,123+17.8% | Added |
| Danske Bank A/S | 40,562 | $2.51M | 0.01% | +40,562 | New |
| Envestnet Asset Management Inc | 40,761 | $2.52M | 0.00% | +43+0.1% | Added |
| Van Eck Associates Corp | 43,856 | $2.71M | 0.00% | +11,730+36.5% | Added |
| State of Tennessee, Treasury Department | 47,156 | $2.91M | 0.01% | −11,780−20.0% | Reduced |
| Knights of Columbus Asset Advisors LLC | 47,914 | $2.96M | 0.21% | −45,583−48.8% | Reduced |
| Yousif Capital Management, LLC | 48,811 | $3.02M | 0.03% | −2,459−4.8% | Reduced |
| B. Metzler seel. Sohn & Co. AG | 50,210 | $3.10M | 0.03% | +18,203+56.9% | Added |
| Allianz Asset Management GmbH | 50,412 | $3.12M | 0.01% | +50,412 | New |
| Castleark Management LLC | 50,710 | $3.13M | 0.13% | −59,830−54.1% | Reduced |
| Janus Henderson Group PLC | 50,960 | $3.15M | 0.00% | +10.0% | Added |
| 1492 Capital Management LLC | 52,112 | $3.22M | 1.79% | +52,112 | New |
| Rice Hall James & Associates, LLC | 53,655 | $3.32M | 0.19% | −11,811−18.0% | Reduced |
| Catalyst Funds Management Pty Ltd | 53,800 | $3.33M | 0.93% | +53,800 | New |
| Moody Aldrich Partners LLC | 53,849 | $3.33M | 0.57% | +5,034+10.3% | Added |
| Amalgamated Bank | 56,362 | $3.48M | 0.03% | −12,036−17.6% | Reduced |
| Prudential Financial Inc | 56,652 | $3.50M | 0.00% | +24,275+75.0% | Added |
| Apis Capital Advisors, LLC | 58,000 | $3.58M | 2.72% | +58,000 | New |
| Two Sigma Advisers, LP | 58,900 | $3.64M | 0.01% | +9,000+18.0% | Added |
| Assenagon Asset Management S.A. | 59,297 | $3.67M | 0.01% | −88,501−59.9% | Reduced |
| Teachers Retirement System of the State of Kentucky | 60,147 | $3.72M | 0.03% | −2,481−4.0% | Reduced |
| Russell Investments Group, Ltd. | 61,712 | $3.81M | 0.01% | +423+0.7% | Added |
| State of New Jersey Common Pension Fund D | 62,389 | $3.86M | 0.01% | 00.0% | Unchanged |
| Pinebridge Investments, L.P. | 64,429 | $3.98M | 0.03% | +64,429 | New |
| Hillsdale Investment Management Inc. | 64,700 | $4.00M | 0.32% | +64,620+80,775.0% | Added |
| Vident Advisory, LLC | 65,673 | $4.06M | 0.08% | +5,991+10.0% | Added |
| Jane Street Group, LLC | 65,932 | $4.08M | 0.01% | −215,079−76.5% | Reduced |
| Comerica Bank | 69,395 | $4.29M | 0.02% | +23,526+51.3% | Added |
| Jackson Square Partners, LLC | 69,475 | $4.29M | 0.18% | −9,131−11.6% | Reduced |
| New York State Teachers Retirement System | 75,281 | $4.65M | 0.01% | +2,411+3.3% | Added |
| Investors Towarzystwo Funduszy Inwestycyjnych Spolka Akcyjna | 79,589 | $4.72M | 1.86% | −1,111−1.4% | Reduced |
| D. E. Shaw & Co., Inc. | 76,525 | $4.73M | 0.01% | −20,906−21.5% | Reduced |
| Thornburg Investment Management Inc | 80,273 | $4.96M | 0.07% | −1,978−2.4% | Reduced |
| Man Group plc | 80,712 | $4.99M | 0.01% | +17,665+28.0% | Added |
| Stifel Financial Corp | 82,149 | $5.08M | 0.01% | −1,907−2.3% | Reduced |
| Trexquant Investment LP | 83,731 | $5.18M | 0.10% | +83,731 | New |
| Guggenheim Capital LLC | 85,053 | $5.26M | 0.04% | +54,100+174.8% | Added |
| AQR Capital Management LLC | 86,852 | $5.37M | 0.01% | +31,501+56.9% | Added |
| Lombard Odier Asset Management (Europe) Ltd | 89,559 | $5.54M | 0.35% | +89,559 | New |
| Great West Life Assurance Co | 90,341 | $5.58M | 0.01% | +779+0.9% | Added |
| Kadensa Capital Ltd | 92,907 | $5.74M | 1.56% | +92,907 | New |
| Texas Permanent School Fund | 94,091 | $5.82M | 0.05% | +1,219+1.3% | Added |
| LPL Financial LLC | 94,867 | $5.86M | 0.00% | −1,035−1.1% | Reduced |
| Capital Fund Management S.A. | 101,032 | $6.24M | 0.08% | −43,664−30.2% | Reduced |
| State of Wisconsin Investment Board | 102,033 | $6.31M | 0.02% | +28,767+39.3% | Added |
| Deutsche Bank AG | 104,419 | $6.45M | 0.00% | +38,414+58.2% | Added |
| California State Teachers Retirement System | 107,753 | $6.66M | 0.01% | −7,412−6.4% | Reduced |
| MetLife Investment Management | 111,957 | $6.92M | 0.05% | −4,062−3.5% | Reduced |
| Citadel Advisors LLC | 112,572 | $6.96M | 0.01% | −28,181−20.0% | Reduced |
| Mutual of America Capital Management LLC | 115,590 | $7.14M | 0.08% | −6,558−5.4% | Reduced |
| Epoch Investment Partners, Inc. | 122,172 | $7.55M | 0.03% | −13,115−9.7% | Reduced |
| Walleye Capital LLC | 126,135 | $7.80M | 0.08% | +108,778+626.7% | Added |
| UBS Asset Management Americas Inc | 128,143 | $7.92M | 0.00% | −2,342−1.8% | Reduced |
| Primecap Management Co | 128,200 | $7.92M | 0.01% | −6,763−5.0% | Reduced |
| Wells Fargo & Company | 128,487 | $7.94M | 0.00% | −3,113−2.4% | Reduced |
| Barington Capital Group, L.P. | 130,100 | $8.04M | 7.92% | 00.0% | Unchanged |
| Manufacturers Life Insurance Company, The | 131,588 | $8.13M | 0.01% | +3,478+2.7% | Added |
| Retirement Systems of Alabama | 135,005 | $8.34M | 0.03% | +356+0.3% | Added |
| AXA S.A. | 152,481 | $9.42M | 0.03% | −38,545−20.2% | Reduced |
| DekaBank Deutsche Girozentrale | 154,173 | $9.68M | 0.02% | +107,500+230.3% | Added |