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, Q2 2026
Institutional positions in Rambus Inc as of Jun 30, 2026. 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
- 620
- +71 vs. Q1 2026
- Shares held
- 100.5M
- −1.86M (−1.8%) vs. Q1 2026
- Total value
- $13.3B
- +$4.50B (+51.2%) vs. Q1 2026
- New holders
- 137
- 189 more added
- Sold out
- 66
- 229 more reduced
8 institutions that held it in Q1 2026 haven't filed for Q2 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 2026: 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, Q2 2026
Shares, value and share of portfolio for each institution holding Rambus Inc; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Nordea Investment Management AB | 104,479 | $13.1M | 0.01% | −3,576−3.3% | Reduced |
| Rockefeller Capital Management L.P. | 96,045 | $12.7M | 0.02% | +593+0.6% | Added |
| Jane Street Group, LLC | 95,013 | $12.6M | 0.01% | +89,587+1,651.1% | Added |
| Y-Intercept (Hong Kong) Ltd | 94,680 | $12.6M | 0.25% | +57,779+156.6% | Added |
| State of Wisconsin Investment Board | 94,192 | $12.5M | 0.03% | −1,176−1.2% | Reduced |
| Mirae Asset Global ETFs Holdings Ltd. | 94,035 | $12.5M | 0.01% | −47,050−33.3% | Reduced |
| DekaBank Deutsche Girozentrale | 154,173 | $12.2M | 0.02% | 00.0% | Unchanged |
| Intech Investment Management LLC | 90,158 | $12.0M | 0.11% | −24,209−21.2% | Reduced |
| Qube Research & Technologies Ltd | 89,539 | $11.9M | 0.01% | +89,539 | New |
| ArrowMark Colorado Holdings LLC | 89,514 | $11.9M | 0.49% | −172,202−65.8% | Reduced |
| Catalyst Funds Management Pty Ltd | 88,800 | $11.8M | 0.66% | +88,800 | New |
| Lazard Asset Management LLC | 87,304 | $11.6M | 0.02% | −14,397−14.2% | Reduced |
| State Board of Administration of Florida Retirement System | 84,930 | $11.3M | 0.02% | +58,347+219.5% | Added |
| Wells Fargo & Company | 83,655 | $11.1M | 0.00% | −41,234−33.0% | Reduced |
| Jump Financial, LLC | 83,050 | $11.0M | 0.10% | +77,886+1,508.2% | Added |
| LPL Financial LLC | 82,343 | $10.9M | 0.00% | −5,621−6.4% | Reduced |
| Franklin Resources Inc | 74,031 | $9.83M | 0.00% | −249,333−77.1% | Reduced |
| Weiss Asset Management LP | 73,781 | $9.79M | 0.11% | +10,681+16.9% | Added |
| New York State Teachers Retirement System | 71,833 | $9.54M | 0.02% | −1,489−2.0% | Reduced |
| Susquehanna Portfolio Strategies, LLC | 69,324 | $9.20M | 0.15% | +38,746+126.7% | Added |
| Great West Life Assurance Co | 67,896 | $9.00M | 0.01% | +5,766+9.3% | Added |
| Envestnet Asset Management Inc | 67,308 | $8.93M | 0.00% | −23,366−25.8% | Reduced |
| Granahan Investment Management Inc | 66,245 | $8.79M | 0.31% | −214,001−76.4% | Reduced |
| Captrust Financial Advisors | 64,448 | $8.55M | 0.01% | +12,651+24.4% | Added |
| Axiom Investors LLC | 63,690 | $8.45M | 0.07% | −75,539−54.3% | Reduced |
| Renaissance Group LLC | 58,896 | $7.82M | 0.32% | −46,899−44.3% | Reduced |
| New York State Common Retirement Fund | 57,089 | $7.58M | 0.01% | +14,151+33.0% | Added |
| Marshall Wace, LLP | 56,425 | $7.49M | 0.01% | +50,899+921.1% | Added |
| MetLife Investment Management | 56,276 | $7.47M | 0.03% | −53,557−48.8% | Reduced |
| Nicholas Investment Partners, LP | 53,368 | $7.08M | 0.40% | +2,517+4.9% | Added |
| Amalgamated Bank | 51,383 | $6.82M | 0.05% | +4,835+10.4% | Added |
| American Century Companies Inc | 51,117 | $6.79M | 0.00% | +5,627+12.4% | Added |
| Vident Advisory, LLC | 50,237 | $6.67M | 0.05% | −1,710−3.3% | Reduced |
| AMJ Financial Wealth Management | 76,330 | $6.57M | 1.56% | 00.0% | Unchanged |
| Police & Firemen's Retirement System of New Jersey | 48,545 | $6.44M | 0.05% | +19,235+65.6% | Added |
| Primecap Management Co | 47,500 | $6.31M | 0.00% | 00.0% | Unchanged |
| Vanguard Global Advisers, LLC | 46,192 | $6.13M | 0.00% | −1,790−3.7% | Reduced |
| HSBC Holdings PLC | 48,013 | $6.11M | 0.00% | +41,684+658.6% | Added |
| Treasurer of the State of North Carolina | 45,790 | $6.08M | 0.02% | +45,790 | New |
| EFG International AG | 45,149 | $5.99M | 0.11% | +2,732+6.4% | Added |
| Loup Funds, LLC | 44,634 | $5.92M | 2.69% | −13,402−23.1% | Reduced |
| Penserra Capital Management LLC | 44,634 | $5.92M | 0.05% | −12,527−21.9% | Reduced |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 44,550 | $5.91M | 0.01% | −324−0.7% | Reduced |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 43,883 | $5.83M | 0.01% | −22,161−33.6% | Reduced |
| Brevan Howard Capital Management LP | 43,098 | $5.72M | 0.08% | +43,098 | New |
| Campbell Newman Asset Management Inc | 42,966 | $5.70M | 0.42% | +1,899+4.6% | Added |
| Natixis Advisors, L.P. | 42,603 | $5.66M | 0.01% | +12,036+39.4% | Added |
| State of Tennessee, Treasury Department | 41,521 | $5.51M | 0.02% | −747−1.8% | Reduced |
| Alight Capital Management LP | 40,000 | $5.31M | 0.86% | −60,000−60.0% | Reduced |
| Meiji Yasuda Asset Management Co Ltd. | 38,759 | $5.14M | 0.23% | −902−2.3% | Reduced |
| Man Group plc | 38,613 | $5.13M | 0.01% | −100,519−72.2% | Reduced |
| FORA Capital, LLC | 38,223 | $5.07M | 0.35% | +23,072+152.3% | Added |
| Aspetuck Financial Management LLC | 38,175 | $5.07M | 2.98% | 00.0% | Unchanged |
| ExodusPoint Capital Management, LP | 38,091 | $5.06M | 0.05% | +38,091 | New |
| Nissay Asset Management Corp | 37,649 | $5.00M | 0.02% | +11,275+42.8% | Added |
| Pathstone Holdings, LLC | 36,602 | $4.86M | 0.01% | +419+1.2% | Added |
| Engineers Gate Manager LP | 35,888 | $4.76M | 0.06% | +35,888 | New |
| Federated Hermes, Inc. | 35,607 | $4.73M | 0.01% | −179,793−83.5% | Reduced |
| State of New Jersey Common Pension Fund D | 34,972 | $4.64M | 0.02% | −2,003−5.4% | Reduced |
| Rice Hall James & Associates, LLC | 34,819 | $4.62M | 0.22% | −2,240−6.0% | Reduced |
| Teachers Retirement System of the State of Kentucky | 34,548 | $4.59M | 0.03% | −14,576−29.7% | Reduced |
| Raiffeisen Bank International AG | 37,000 | $4.58M | 0.05% | −11,000−22.9% | Reduced |
| CWA Asset Management Group, LLC | 33,994 | $4.51M | 0.14% | +10,027+41.8% | Added |
| Algert Global LLC | 33,257 | $4.41M | 0.05% | −39,190−54.1% | Reduced |
| Public Employees Retirement System of Ohio | 32,798 | $4.35M | 0.01% | +30,613+1,401.1% | Added |
| Hancock Whitney Corp | 32,700 | $4.34M | 0.07% | −682−2.0% | Reduced |
| Assenagon Asset Management S.A. | 31,896 | $4.23M | 0.01% | −15,635−32.9% | Reduced |
| Louisiana State Employees Retirement System | 31,600 | $4.19M | 0.06% | +400+1.3% | Added |
| Daventry Group, LP | 30,500 | $4.05M | 3.06% | +30,500 | New |
| Pictet Asset Management Holding SA | 30,400 | $4.04M | 0.00% | −13,183−30.2% | Reduced |
| Yousif Capital Management, LLC | 29,858 | $3.96M | 0.04% | −1,837−5.8% | Reduced |
| Arizona State Retirement System | 29,844 | $3.96M | 0.02% | +275+0.9% | Added |
| Virginia Retirement Systems Et Al | 29,654 | $3.94M | 0.02% | +9,444+46.7% | Added |
| Mercer Global Advisors Inc | 29,165 | $3.87M | 0.00% | +18,580+175.5% | Added |
| SummitTX Capital, L.P. | 28,885 | $3.83M | 0.10% | −51,789−64.2% | Reduced |
| New Age Alpha Advisors, LLC | 27,438 | $3.64M | 0.15% | −541−1.9% | Reduced |
| Illinois Municipal Retirement Fund | 27,433 | $3.64M | 0.04% | +119+0.4% | Added |
| Vanguard Investments Australia, Ltd. | 27,418 | $3.64M | 0.01% | +611+2.3% | Added |
| Emerald Investment Advisers, LLC | 26,848 | $3.56M | 0.24% | −1,242−4.4% | Reduced |
| Cerity Partners LLC | 26,719 | $3.55M | 0.00% | +1,032+4.0% | Added |
| Quantinno Capital Management LP | 26,347 | $3.50M | 0.00% | +726+2.8% | Added |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 25,888 | $3.44M | 0.02% | −1,084−4.0% | Reduced |
| Cetera Investment Advisers | 25,556 | $3.39M | 0.00% | −3,136−10.9% | Reduced |
| Baird Financial Group, Inc. | 25,473 | $3.38M | 0.00% | +1,383+5.7% | Added |
| KLP Kapitalforvaltning AS | 25,400 | $3.37M | 0.01% | +1,600+6.7% | Added |
| State of Michigan Retirement System | 25,300 | $3.36M | 0.01% | −600−2.3% | Reduced |
| Guggenheim Capital LLC | 25,091 | $3.33M | 0.02% | −17,640−41.3% | Reduced |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 24,724 | $3.28M | 0.00% | −25,547−50.8% | Reduced |
| Fifth Third Bancorp | 24,417 | $3.24M | 0.01% | −2,944−10.8% | Reduced |
| Northwestern Mutual Investment Management Company, LLC | 24,326 | $3.23M | 0.04% | +210+0.9% | Added |
| Aubrey Capital Management Ltd | 24,300 | $3.22M | 2.02% | +24,300 | New |
| Hennion & Walsh Asset Management, Inc. | 24,150 | $3.21M | 0.09% | −1,577−6.1% | Reduced |
| RE Advisers Corp | 23,700 | $3.15M | 0.08% | +10,700+82.3% | Added |
| Deutsche Bank AG | 23,567 | $3.13M | 0.00% | −84,741−78.2% | Reduced |
| Silvercrest Asset Management Group LLC | 23,475 | $3.12M | 0.02% | −1,976−7.8% | Reduced |
| Leonteq Securities AG | 23,043 | $3.06M | 0.18% | +16,294+241.4% | Added |
| Xponance, Inc. | 23,033 | $3.06M | 0.02% | +7,702+50.2% | Added |
| JustInvest LLC | 22,744 | $3.02M | 0.02% | +600+2.7% | Added |
| Tower Research Capital LLC (TRC) | 22,608 | $3.00M | 0.07% | −24,231−51.7% | Reduced |
| One Capital Management, LLC | 34,586 | $2.98M | 0.08% | +34,586 | New |