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, 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
- 621
- +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
- 190 more added
- Sold out
- 66
- 229 more reduced
7 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 | 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, 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 |
|---|---|---|---|---|---|
| Acadian Asset Management LLC | 16,889 | $2.24M | 0.00% | −207−1.2% | Reduced |
| Envestnet Portfolio Solutions, Inc. | 17,254 | $2.29M | 0.01% | +664+4.0% | Added |
| Linden Thomas Advisory Services, LLC | 17,580 | $2.33M | 0.19% | −8,641−33.0% | Reduced |
| Stifel Financial Corp | 17,786 | $2.36M | 0.00% | −8,157−31.4% | Reduced |
| Park Avenue Securities LLC | 17,836 | $2.37M | 0.01% | −1,161−6.1% | Reduced |
| Entropy Technologies, LP | 17,987 | $2.39M | 0.10% | +17,987 | New |
| Cambridge Investment Research Advisors, Inc. | 18,260 | $2.42M | 0.01% | +1,578+9.5% | Added |
| State of Alaska, Department of Revenue | 18,482 | $2.45M | 0.02% | −139−0.7% | Reduced |
| Tealwood Asset Management Inc | 18,757 | $2.49M | 0.96% | −222−1.2% | Reduced |
| Prudential Financial Inc | 18,823 | $2.50M | 0.00% | −70,574−78.9% | Reduced |
| Janney Montgomery Scott LLC | 19,478 | $2.59M | 0.01% | −91,129−82.4% | Reduced |
| Ameritas Investment Partners, Inc. | 19,901 | $2.64M | 0.07% | −8,845−30.8% | Reduced |
| Mariner, LLC | 19,935 | $2.65M | 0.00% | +660+3.4% | Added |
| Defiance ETFs, LLC | 22,782 | $2.82M | 0.04% | +11,343+99.2% | Added |
| Diversify Wealth Management, LLC | 29,957 | $2.89M | 0.05% | −1,296−4.1% | Reduced |
| Diversify Advisory Services, LLC | 29,957 | $2.89M | 0.05% | +24,916+494.3% | Added |
| Hudson Bay Capital Management LP | 22,020 | $2.92M | 0.01% | +22,020 | New |
| New Mexico Educational Retirement Board | 22,100 | $2.93M | 0.07% | 00.0% | Unchanged |
| Independent Solutions Wealth Management, LLC | 22,171 | $2.94M | 0.38% | −403−1.8% | Reduced |
| B. Metzler seel. Sohn & Co. AG | 22,274 | $2.96M | 0.03% | +3,616+19.4% | Added |
| Oregon Public Employees Retirement Fund | 22,369 | $2.97M | 0.03% | +300+1.4% | Added |
| One Capital Management, LLC | 34,586 | $2.98M | 0.08% | +34,586 | New |
| Tower Research Capital LLC (TRC) | 22,608 | $3.00M | 0.07% | −24,231−51.7% | Reduced |
| JustInvest LLC | 22,744 | $3.02M | 0.02% | +600+2.7% | Added |
| Xponance, Inc. | 23,033 | $3.06M | 0.02% | +7,702+50.2% | Added |
| Leonteq Securities AG | 23,043 | $3.06M | 0.18% | +16,294+241.4% | Added |
| Silvercrest Asset Management Group LLC | 23,475 | $3.12M | 0.02% | −1,976−7.8% | Reduced |
| Deutsche Bank AG | 23,567 | $3.13M | 0.00% | −84,741−78.2% | Reduced |
| RE Advisers Corp | 23,700 | $3.15M | 0.08% | +10,700+82.3% | Added |
| Hennion & Walsh Asset Management, Inc. | 24,150 | $3.21M | 0.09% | −1,577−6.1% | Reduced |
| Aubrey Capital Management Ltd | 24,300 | $3.22M | 2.02% | +24,300 | New |
| Northwestern Mutual Investment Management Company, LLC | 24,326 | $3.23M | 0.04% | +210+0.9% | Added |
| Fifth Third Bancorp | 24,417 | $3.24M | 0.01% | −2,944−10.8% | Reduced |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 24,724 | $3.28M | 0.00% | −25,547−50.8% | Reduced |
| Guggenheim Capital LLC | 25,091 | $3.33M | 0.02% | −17,640−41.3% | Reduced |
| State of Michigan Retirement System | 25,300 | $3.36M | 0.01% | −600−2.3% | Reduced |
| KLP Kapitalforvaltning AS | 25,400 | $3.37M | 0.01% | +1,600+6.7% | Added |
| Baird Financial Group, Inc. | 25,473 | $3.38M | 0.00% | +1,383+5.7% | Added |
| Cetera Investment Advisers | 25,556 | $3.39M | 0.00% | −3,136−10.9% | Reduced |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 25,888 | $3.44M | 0.02% | −1,084−4.0% | Reduced |
| Quantinno Capital Management LP | 26,347 | $3.50M | 0.00% | +726+2.8% | Added |
| Cerity Partners LLC | 26,719 | $3.55M | 0.00% | +1,032+4.0% | Added |
| Emerald Investment Advisers, LLC | 26,848 | $3.56M | 0.24% | −1,242−4.4% | Reduced |
| Vanguard Investments Australia, Ltd. | 27,418 | $3.64M | 0.01% | +611+2.3% | Added |
| Illinois Municipal Retirement Fund | 27,433 | $3.64M | 0.04% | +119+0.4% | Added |
| New Age Alpha Advisors, LLC | 27,438 | $3.64M | 0.15% | −541−1.9% | Reduced |
| SummitTX Capital, L.P. | 28,885 | $3.83M | 0.10% | −51,789−64.2% | Reduced |
| Mercer Global Advisors Inc | 29,165 | $3.87M | 0.00% | +18,580+175.5% | Added |
| Virginia Retirement Systems Et Al | 29,654 | $3.94M | 0.02% | +9,444+46.7% | Added |
| Arizona State Retirement System | 29,844 | $3.96M | 0.02% | +275+0.9% | Added |
| Yousif Capital Management, LLC | 29,858 | $3.96M | 0.04% | −1,837−5.8% | Reduced |
| Pictet Asset Management Holding SA | 30,400 | $4.04M | 0.00% | −13,183−30.2% | Reduced |
| Daventry Group, LP | 30,500 | $4.05M | 3.06% | +30,500 | New |
| Louisiana State Employees Retirement System | 31,600 | $4.19M | 0.06% | +400+1.3% | Added |
| Assenagon Asset Management S.A. | 31,896 | $4.23M | 0.01% | −15,635−32.9% | Reduced |
| Hancock Whitney Corp | 32,700 | $4.34M | 0.07% | −682−2.0% | Reduced |
| Public Employees Retirement System of Ohio | 32,798 | $4.35M | 0.01% | +30,613+1,401.1% | Added |
| Algert Global LLC | 33,257 | $4.41M | 0.05% | −39,190−54.1% | Reduced |
| CWA Asset Management Group, LLC | 33,994 | $4.51M | 0.14% | +10,027+41.8% | Added |
| Raiffeisen Bank International AG | 37,000 | $4.58M | 0.05% | −11,000−22.9% | Reduced |
| Teachers Retirement System of the State of Kentucky | 34,548 | $4.59M | 0.03% | −14,576−29.7% | Reduced |
| Rice Hall James & Associates, LLC | 34,819 | $4.62M | 0.22% | −2,240−6.0% | Reduced |
| State of New Jersey Common Pension Fund D | 34,972 | $4.64M | 0.02% | −2,003−5.4% | Reduced |
| Federated Hermes, Inc. | 35,607 | $4.73M | 0.01% | −179,793−83.5% | Reduced |
| Engineers Gate Manager LP | 35,888 | $4.76M | 0.06% | +35,888 | New |
| Pathstone Holdings, LLC | 36,602 | $4.86M | 0.01% | +419+1.2% | Added |
| Nissay Asset Management Corp | 37,649 | $5.00M | 0.02% | +11,275+42.8% | Added |
| ExodusPoint Capital Management, LP | 38,091 | $5.06M | 0.05% | +38,091 | New |
| Aspetuck Financial Management LLC | 38,175 | $5.07M | 2.98% | 00.0% | Unchanged |
| FORA Capital, LLC | 38,223 | $5.07M | 0.35% | +23,072+152.3% | Added |
| Man Group plc | 38,613 | $5.13M | 0.01% | −100,519−72.2% | Reduced |
| Meiji Yasuda Asset Management Co Ltd. | 38,759 | $5.14M | 0.23% | −902−2.3% | Reduced |
| Alight Capital Management LP | 40,000 | $5.31M | 0.86% | −60,000−60.0% | Reduced |
| State of Tennessee, Treasury Department | 41,521 | $5.51M | 0.02% | −747−1.8% | Reduced |
| Natixis Advisors, L.P. | 42,603 | $5.66M | 0.01% | +12,036+39.4% | Added |
| Campbell Newman Asset Management Inc | 42,966 | $5.70M | 0.42% | +1,899+4.6% | Added |
| Brevan Howard Capital Management LP | 43,098 | $5.72M | 0.08% | +43,098 | New |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 43,883 | $5.83M | 0.01% | −22,161−33.6% | Reduced |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 44,550 | $5.91M | 0.01% | −324−0.7% | Reduced |
| Penserra Capital Management LLC | 44,634 | $5.92M | 0.05% | −12,527−21.9% | Reduced |
| Loup Funds, LLC | 44,634 | $5.92M | 2.69% | −13,402−23.1% | Reduced |
| EFG International AG | 45,149 | $5.99M | 0.11% | +2,732+6.4% | Added |
| Treasurer of the State of North Carolina | 45,790 | $6.08M | 0.02% | +45,790 | New |
| HSBC Holdings PLC | 48,013 | $6.11M | 0.00% | +41,684+658.6% | Added |
| Vanguard Global Advisers, LLC | 46,192 | $6.13M | 0.00% | −1,790−3.7% | Reduced |
| Primecap Management Co | 47,500 | $6.31M | 0.00% | 00.0% | Unchanged |
| Police & Firemen's Retirement System of New Jersey | 48,545 | $6.44M | 0.05% | +19,235+65.6% | Added |
| AMJ Financial Wealth Management | 76,330 | $6.57M | 1.56% | 00.0% | Unchanged |
| Vident Advisory, LLC | 50,237 | $6.67M | 0.05% | −1,710−3.3% | Reduced |
| American Century Companies Inc | 51,117 | $6.79M | 0.00% | +5,627+12.4% | Added |
| Amalgamated Bank | 51,383 | $6.82M | 0.05% | +4,835+10.4% | Added |
| Nicholas Investment Partners, LP | 53,368 | $7.08M | 0.40% | +2,517+4.9% | Added |
| MetLife Investment Management | 56,276 | $7.47M | 0.03% | −53,557−48.8% | Reduced |
| Marshall Wace, LLP | 56,425 | $7.49M | 0.01% | +50,899+921.1% | Added |
| New York State Common Retirement Fund | 57,089 | $7.58M | 0.01% | +14,151+33.0% | Added |
| Renaissance Group LLC | 58,896 | $7.82M | 0.32% | −46,899−44.3% | Reduced |
| Axiom Investors LLC | 63,690 | $8.45M | 0.07% | −75,539−54.3% | Reduced |
| Captrust Financial Advisors | 64,448 | $8.55M | 0.01% | +12,651+24.4% | Added |
| Granahan Investment Management Inc | 66,245 | $8.79M | 0.31% | −214,001−76.4% | Reduced |
| Envestnet Asset Management Inc | 67,308 | $8.93M | 0.00% | −23,366−25.8% | Reduced |