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 2025
Institutional positions in Rambus Inc as of Sep 30, 2025. 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
- 513
- +62 vs. Q2 2025
- Shares held
- 98.8M
- +3.82M (+4.0%) vs. Q2 2025
- Total value
- $10.3B
- +$4.21B (+69.3%) vs. Q2 2025
- New holders
- 123
- 169 more added
- Sold out
- 61
- 163 more reduced
8 institutions that held it in Q2 2025 haven't filed for Q3 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q2 2025: 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 2025
Shares, value and share of portfolio for each institution holding Rambus Inc; share changes are against Q2 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Envestnet Portfolio Solutions, Inc. | 16,795 | $1.75M | 0.01% | −152−0.9% | Reduced |
| Diversify Wealth Management, LLC | 16,753 | $1.77M | 0.10% | +474+2.9% | Added |
| Gould Capital, LLC | 17,939 | $1.87M | 1.16% | +547+3.1% | Added |
| Mackenzie Financial Corp | 18,413 | $1.92M | 0.00% | −14,184−43.5% | Reduced |
| Great Lakes Advisors, LLC | 18,419 | $1.92M | 0.02% | −509−2.7% | Reduced |
| Horizon Investments, LLC | 18,477 | $1.93M | 0.03% | +9,319+101.8% | Added |
| Illinois Municipal Retirement Fund | 18,495 | $1.93M | 0.02% | +9,190+98.8% | Added |
| Point72 Asia (Singapore) Pte. Ltd. | 18,591 | $1.94M | 0.30% | +18,591 | New |
| Cambridge Investment Research Advisors, Inc. | 18,774 | $1.96M | 0.01% | +5,672+43.3% | Added |
| Pacer Advisors, Inc. | 18,864 | $1.97M | 0.01% | +13,336+241.2% | Added |
| Zacks Investment Management | 19,110 | $1.99M | 0.02% | +1,182+6.6% | Added |
| Park Avenue Securities LLC | 19,387 | $2.02M | 0.02% | −2,510−11.5% | Reduced |
| Tealwood Asset Management Inc | 19,524 | $2.03M | 0.82% | −936−4.6% | Reduced |
| Mariner, LLC | 19,871 | $2.07M | 0.00% | +1,960+10.9% | Added |
| Quantinno Capital Management LP | 19,972 | $2.08M | 0.01% | +3,445+20.8% | Added |
| Pathstone Holdings, LLC | 20,005 | $2.08M | 0.01% | +1,775+9.7% | Added |
| Epoch Investment Partners, Inc. | 20,164 | $2.10M | 0.01% | +1,875+10.3% | Added |
| IMC-Chicago, LLC | 20,443 | $2.13M | 0.04% | +20,443 | New |
| Stifel Financial Corp | 20,594 | $2.15M | 0.00% | +3,323+19.2% | Added |
| Cetera Investment Advisers | 20,863 | $2.17M | 0.00% | −10,804−34.1% | Reduced |
| Oregon Public Employees Retirement Fund | 21,716 | $2.26M | 0.03% | −300−1.4% | Reduced |
| JustInvest LLC | 21,819 | $2.27M | 0.02% | +305+1.4% | Added |
| Moody National Bank Trust Division | 21,975 | $2.29M | 0.19% | +13,069+146.7% | Added |
| New Mexico Educational Retirement Board | 22,100 | $2.30M | 0.07% | 00.0% | Unchanged |
| Nissay Asset Management Corp | 22,257 | $2.32M | 0.01% | +22,257 | New |
| KLP Kapitalforvaltning AS | 22,400 | $2.33M | 0.01% | +200+0.9% | Added |
| Wesbanco Bank Inc | 22,809 | $2.38M | 0.07% | −5,175−18.5% | Reduced |
| Skandinaviska Enskilda Banken AB (publ) | 23,197 | $2.42M | 0.01% | −7,160−23.6% | Reduced |
| Aurora Investment Counsel | 23,598 | $2.46M | 1.29% | +287+1.2% | Added |
| Cambiar Investors LLC | 23,747 | $2.47M | 0.11% | −5,077−17.6% | Reduced |
| Jackson Creek Investment Advisors LLC | 23,920 | $2.49M | 0.72% | +23,920 | New |
| Northwestern Mutual Investment Management Company, LLC | 23,982 | $2.50M | 0.04% | 00.0% | Unchanged |
| STRS Ohio | 24,600 | $2.56M | 0.01% | −3,000−10.9% | Reduced |
| Thrivent Financial for Lutherans | 24,719 | $2.58M | 0.01% | −572−2.3% | Reduced |
| Azzad Asset Management Inc | 24,825 | $2.59M | 0.26% | +24,825 | New |
| TD Asset Management Inc | 25,306 | $2.64M | 0.00% | +20,816+463.6% | Added |
| State of Michigan Retirement System | 25,600 | $2.67M | 0.01% | −200−0.8% | Reduced |
| Edgestream Partners, L.P. | 25,685 | $2.68M | 0.08% | +10,809+72.7% | Added |
| Natixis Advisors, L.P. | 26,058 | $2.71M | 0.00% | +1,661+6.8% | Added |
| Linden Thomas Advisory Services, LLC | 26,402 | $2.75M | 0.28% | −156−0.6% | Reduced |
| Hennion & Walsh Asset Management, Inc. | 26,495 | $2.76M | 0.10% | +5,329+25.2% | Added |
| AMJ Financial Wealth Management | 26,973 | $2.81M | 0.68% | +26,973 | New |
| Nomura Holdings Inc | 27,046 | $2.82M | 0.01% | +27,046 | New |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 27,614 | $2.88M | 0.01% | +17+0.1% | Added |
| State Board of Administration of Florida Retirement System | 28,610 | $2.98M | 0.01% | −2,513−8.1% | Reduced |
| Meritage Portfolio Management | 28,789 | $3.00M | 0.20% | −13,035−31.2% | Reduced |
| Qube Research & Technologies Ltd | 29,117 | $3.03M | 0.00% | −320,156−91.7% | Reduced |
| Ameritas Investment Partners, Inc. | 29,287 | $3.05M | 0.09% | −2,596−8.1% | Reduced |
| Capital Fund Management S.A. | 29,371 | $3.06M | 0.03% | +3,655+14.2% | Added |
| Diversified Trust Co | 29,622 | $3.09M | 0.06% | −1,320−4.3% | Reduced |
| Investors Towarzystwo Funduszy Inwestycyjnych Spolka Akcyjna | 29,750 | $3.10M | 1.24% | −3,400−10.3% | Reduced |
| Hancock Whitney Corp | 29,835 | $3.11M | 0.06% | +22,368+299.6% | Added |
| Louisiana State Employees Retirement System | 30,000 | $3.13M | 0.05% | −200−0.7% | Reduced |
| Police & Firemen's Retirement System of New Jersey | 30,134 | $3.14M | 0.03% | +5,777+23.7% | Added |
| B. Metzler seel. Sohn & Co. AG | 31,732 | $3.31M | 0.03% | −14,747−31.7% | Reduced |
| Arizona State Retirement System | 31,759 | $3.31M | 0.02% | +419+1.3% | Added |
| Susquehanna Portfolio Strategies, LLC | 32,526 | $3.39M | 0.05% | +32,526 | New |
| Cerity Partners LLC | 32,783 | $3.42M | 0.01% | +3,613+12.4% | Added |
| ProShare Advisors LLC | 32,958 | $3.43M | 0.01% | −6,742−17.0% | Reduced |
| Handelsbanken Fonder AB | 33,797 | $3.52M | 0.01% | +4,100+13.8% | Added |
| Yousif Capital Management, LLC | 33,835 | $3.53M | 0.04% | −2,160−6.0% | Reduced |
| Penserra Capital Management LLC | 34,162 | $3.56M | 0.04% | +27,899+445.5% | Added |
| American Century Companies Inc | 34,991 | $3.65M | 0.00% | +2,038+6.2% | Added |
| Stephens Inc | 36,142 | $3.77M | 0.05% | +32,612+923.9% | Added |
| State of New Jersey Common Pension Fund D | 36,327 | $3.79M | 0.01% | +1,781+5.2% | Added |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 36,442 | $3.80M | 0.01% | +6,344+21.1% | Added |
| Teacher Retirement System of Texas | 37,036 | $3.86M | 0.02% | +635+1.7% | Added |
| Ensign Peak Advisors, Inc | 38,321 | $3.99M | 0.01% | +5,795+17.8% | Added |
| South Dakota Investment Council | 38,813 | $4.04M | 0.08% | +10,200+35.6% | Added |
| Point72 Hong Kong Ltd | 39,524 | $4.12M | 0.19% | +39,524 | New |
| Two Sigma Advisers, LP | 40,100 | $4.18M | 0.01% | −89,200−69.0% | Reduced |
| Lisanti Capital Growth, LLC | 41,532 | $4.33M | 1.06% | +41,532 | New |
| Campbell Newman Asset Management Inc | 41,851 | $4.36M | 0.32% | +188+0.5% | Added |
| Captrust Financial Advisors | 42,034 | $4.38M | 0.01% | −644−1.5% | Reduced |
| Aspetuck Financial Management LLC | 42,275 | $4.41M | 3.02% | 00.0% | Unchanged |
| SG Americas Securities, LLC | 43,880 | $4.57M | 0.02% | +35,292+410.9% | Added |
| State of Tennessee, Treasury Department | 44,078 | $4.59M | 0.02% | −2,188−4.7% | Reduced |
| Amalgamated Bank | 47,224 | $4.92M | 0.04% | +110.0% | Added |
| Moody Aldrich Partners LLC | 47,803 | $4.98M | 0.94% | −31,347−39.6% | Reduced |
| Rice Hall James & Associates, LLC | 48,779 | $5.08M | 0.28% | −20,007−29.1% | Reduced |
| Erste Asset Management GmbH | 50,000 | $5.13M | 0.05% | +50,000 | New |
| Teachers Retirement System of the State of Kentucky | 49,360 | $5.14M | 0.04% | −4,242−7.9% | Reduced |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 52,435 | $5.46M | 0.01% | +19,046+57.0% | Added |
| Comerica Bank | 55,890 | $5.82M | 0.02% | −27,869−33.3% | Reduced |
| Baird Financial Group, Inc. | 56,554 | $5.89M | 0.01% | +1,749+3.2% | Added |
| Vident Advisory, LLC | 57,087 | $5.95M | 0.06% | −18,419−24.4% | Reduced |
| Primecap Management Co | 59,000 | $6.15M | 0.00% | −3,300−5.3% | Reduced |
| Globeflex Capital L P | 63,818 | $6.65M | 1.02% | −1,752−2.7% | Reduced |
| Intech Investment Management LLC | 64,571 | $6.73M | 0.06% | −4,839−7.0% | Reduced |
| AXA Investment Managers S.A. | 65,678 | $6.84M | 0.02% | +65,678 | New |
| Fred Alger Management, LLC | 67,293 | $7.01M | 0.03% | −26,491−28.2% | Reduced |
| SummitTX Capital, L.P. | 67,388 | $7.02M | 0.29% | −201,507−74.9% | Reduced |
| Thornburg Investment Management Inc | 68,591 | $7.15M | 0.09% | −18,157−20.9% | Reduced |
| Citadel Advisors LLC | 68,703 | $7.16M | 0.01% | −83,701−54.9% | Reduced |
| Victory Capital Management Inc | 69,497 | $7.24M | 0.00% | +31,668+83.7% | Added |
| Rakuten Investment Management, Inc. | 52,387 | $7.49M | 0.03% | +52,387 | New |
| New York State Teachers Retirement System | 72,861 | $7.59M | 0.01% | +7,700+11.8% | Added |
| Royal Bank of Canada | 76,311 | $7.95M | 0.00% | −163,913−68.2% | Reduced |
| Two Sigma Investments, LP | 77,890 | $8.12M | 0.01% | −53,763−40.8% | Reduced |
| Los Angeles Capital Management LLC | 78,032 | $8.13M | 0.03% | −26,114−25.1% | Reduced |