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 2025
Institutional positions in Rambus Inc as of Jun 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
- 459
- +49 vs. Q1 2025
- Shares held
- 97.1M
- +715.5K (+0.7%) vs. Q1 2025
- Total value
- $6.22B
- +$1.23B (+24.5%) vs. Q1 2025
- New holders
- 88
- 191 more added
- Sold out
- 39
- 131 more reduced
3 institutions that held it in Q1 2025 haven't filed for Q2 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 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, Q2 2025
Shares, value and share of portfolio for each institution holding Rambus Inc; share changes are against Q1 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| State of Wisconsin Investment Board | 100,995 | $6.47M | 0.02% | −1,876−1.8% | Reduced |
| Polar Asset Management Partners Inc. | 100,170 | $6.41M | 0.16% | +100,170 | New |
| California State Teachers Retirement System | 99,552 | $6.37M | 0.01% | +370.0% | Added |
| Envestnet Asset Management Inc | 99,481 | $6.37M | 0.00% | +15,218+18.1% | Added |
| Jump Financial, LLC | 99,200 | $6.35M | 0.08% | +99,200 | New |
| Fred Alger Management, LLC | 93,784 | $6.00M | 0.03% | −6,036−6.0% | Reduced |
| LPL Financial LLC | 87,183 | $5.58M | 0.00% | +7,167+9.0% | Added |
| Thornburg Investment Management Inc | 86,748 | $5.55M | 0.07% | +5,628+6.9% | Added |
| Comerica Bank | 83,759 | $5.36M | 0.02% | −17,253−17.1% | Reduced |
| Great West Life Assurance Co | 82,307 | $5.27M | 0.01% | −1,248−1.5% | Reduced |
| HSBC Holdings PLC | 81,934 | $5.21M | 0.00% | +59,742+269.2% | Added |
| Moody Aldrich Partners LLC | 79,150 | $5.07M | 0.98% | +34,112+75.7% | Added |
| Vident Advisory, LLC | 75,506 | $4.83M | 0.05% | +2,238+3.1% | Added |
| Squarepoint Ops LLC | 71,404 | $4.57M | 0.01% | +43,404+155.0% | Added |
| Creative Planning | 70,225 | $4.50M | 0.00% | +14,605+26.3% | Added |
| Intech Investment Management LLC | 69,410 | $4.44M | 0.04% | −11,063−13.7% | Reduced |
| Rice Hall James & Associates, LLC | 68,786 | $4.40M | 0.24% | +117+0.2% | Added |
| Nordea Investment Management AB | 69,116 | $4.38M | 0.00% | +63,864+1,216.0% | Added |
| Allspring Global Investments Holdings, LLC | 68,156 | $4.37M | 0.01% | +57,554+542.9% | Added |
| Acadian Asset Management LLC | 68,056 | $4.35M | 0.01% | +63,817+1,505.5% | Added |
| Cinctive Capital Management LP | 65,677 | $4.20M | 0.23% | +65,677 | New |
| Globeflex Capital L P | 65,570 | $4.20M | 0.35% | +31,581+92.9% | Added |
| New York State Teachers Retirement System | 65,161 | $4.17M | 0.01% | 00.0% | Unchanged |
| Alberta Investment Management Corp | 64,600 | $4.14M | 0.03% | +3,632+6.0% | Added |
| Harbor Capital Advisors, Inc. | 64,440 | $4.13M | 0.17% | −12,179−15.9% | Reduced |
| Royce & Associates LP | 64,175 | $4.11M | 0.04% | −115,732−64.3% | Reduced |
| Primecap Management Co | 62,300 | $3.99M | 0.00% | −10,600−14.5% | Reduced |
| Baird Financial Group, Inc. | 54,805 | $3.51M | 0.01% | +54,805 | New |
| Teachers Retirement System of the State of Kentucky | 53,602 | $3.43M | 0.03% | 00.0% | Unchanged |
| D. E. Shaw & Co., Inc. | 52,532 | $3.36M | 0.00% | −4,226−7.4% | Reduced |
| Amalgamated Bank | 47,213 | $3.02M | 0.02% | +293+0.6% | Added |
| B. Metzler seel. Sohn & Co. AG | 46,479 | $2.98M | 0.03% | 00.0% | Unchanged |
| State of Tennessee, Treasury Department | 46,266 | $2.96M | 0.01% | +2,188+5.0% | Added |
| Public Employees Retirement System of Ohio | 44,551 | $2.85M | 0.01% | +20,424+84.7% | Added |
| Dark Forest Capital Management LP | 43,444 | $2.78M | 0.11% | +38,947+866.1% | Added |
| Jain Global LLC | 43,120 | $2.76M | 0.04% | +43,120 | New |
| Captrust Financial Advisors | 42,678 | $2.73M | 0.01% | +59+0.1% | Added |
| Aspetuck Financial Management LLC | 42,275 | $2.71M | 2.04% | 00.0% | Unchanged |
| Meritage Portfolio Management | 41,824 | $2.68M | 0.17% | +680+1.7% | Added |
| Campbell Newman Asset Management Inc | 41,663 | $2.67M | 0.21% | +2,784+7.2% | Added |
| PEAK6 LLC | 40,887 | $2.62M | 0.09% | +2,626+6.9% | Added |
| ProShare Advisors LLC | 39,700 | $2.54M | 0.01% | −618−1.5% | Reduced |
| Victory Capital Management Inc | 37,829 | $2.42M | 0.00% | −16,353−30.2% | Reduced |
| Magnetar Financial LLC | 36,439 | $2.33M | 0.01% | +36,439 | New |
| Teacher Retirement System of Texas | 36,401 | $2.33M | 0.01% | −1,393−3.7% | Reduced |
| Yousif Capital Management, LLC | 35,995 | $2.30M | 0.02% | −406−1.1% | Reduced |
| State of New Jersey Common Pension Fund D | 34,546 | $2.21M | 0.01% | +559+1.6% | Added |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 33,389 | $2.14M | 0.00% | +4,790+16.7% | Added |
| Investors Towarzystwo Funduszy Inwestycyjnych Spolka Akcyjna | 33,150 | $2.12M | 0.85% | −10,500−24.1% | Reduced |
| American Century Companies Inc | 32,953 | $2.11M | 0.00% | −1,391,412−97.7% | Reduced |
| Mackenzie Financial Corp | 32,597 | $2.09M | 0.00% | +6,434+24.6% | Added |
| Ensign Peak Advisors, Inc | 32,526 | $2.08M | 0.00% | −4,950−13.2% | Reduced |
| Ameritas Investment Partners, Inc. | 31,883 | $2.04M | 0.06% | 00.0% | Unchanged |
| Cetera Investment Advisers | 31,667 | $2.03M | 0.00% | +4,160+15.1% | Added |
| Arizona State Retirement System | 31,340 | $2.01M | 0.01% | +825+2.7% | Added |
| State Board of Administration of Florida Retirement System | 31,123 | $1.99M | 0.00% | 00.0% | Unchanged |
| Diversified Trust Co | 30,942 | $1.98M | 0.04% | +350+1.1% | Added |
| Skandinaviska Enskilda Banken AB (publ) | 30,357 | $1.94M | 0.01% | +28,500+1,534.7% | Added |
| Louisiana State Employees Retirement System | 30,200 | $1.93M | 0.04% | +300+1.0% | Added |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 30,098 | $1.93M | 0.00% | +969+3.3% | Added |
| Danske Bank A/S | 29,859 | $1.91M | 0.00% | −4,534−13.2% | Reduced |
| Handelsbanken Fonder AB | 29,697 | $1.90M | 0.01% | −2,500−7.8% | Reduced |
| Cerity Partners LLC | 29,170 | $1.87M | 0.00% | +3,727+14.6% | Added |
| Cambiar Investors LLC | 28,824 | $1.85M | 0.08% | −100.0% | Reduced |
| Nebula Research & Development LLC | 28,720 | $1.84M | 0.16% | +13,677+90.9% | Added |
| South Dakota Investment Council | 28,613 | $1.83M | 0.04% | 00.0% | Unchanged |
| Wesbanco Bank Inc | 27,984 | $1.79M | 0.05% | +17,000+154.8% | Added |
| STRS Ohio | 27,600 | $1.77M | 0.01% | +300+1.1% | Added |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 27,597 | $1.77M | 0.01% | +2,121+8.3% | Added |
| Linden Thomas Advisory Services, LLC | 26,558 | $1.70M | 0.19% | −288−1.1% | Reduced |
| State of Michigan Retirement System | 25,800 | $1.65M | 0.01% | +300+1.2% | Added |
| Capital Fund Management S.A. | 25,716 | $1.65M | 0.02% | −55,595−68.4% | Reduced |
| Thrivent Financial for Lutherans | 25,291 | $1.62M | 0.00% | +303+1.2% | Added |
| AXA S.A. | 25,227 | $1.62M | 0.00% | +25,227 | New |
| Natixis Advisors, L.P. | 24,397 | $1.56M | 0.00% | −98,082−80.1% | Reduced |
| Police & Firemen's Retirement System of New Jersey | 24,357 | $1.56M | 0.01% | +1,250+5.4% | Added |
| Brevan Howard Capital Management LP | 24,086 | $1.54M | 0.02% | +12,050+100.1% | Added |
| Northwestern Mutual Investment Management Company, LLC | 23,982 | $1.54M | 0.02% | +286+1.2% | Added |
| Aurora Investment Counsel | 23,311 | $1.49M | 0.79% | +23,311 | New |
| DnB Asset Management AS | 23,063 | $1.48M | 0.01% | +23,063 | New |
| Bailard, Inc. | 22,608 | $1.45M | 0.03% | −9,838−30.3% | Reduced |
| KLP Kapitalforvaltning AS | 22,200 | $1.42M | 0.01% | +900+4.2% | Added |
| New Mexico Educational Retirement Board | 22,100 | $1.42M | 0.05% | 00.0% | Unchanged |
| Quest Partners LLC | 22,057 | $1.41M | 0.14% | +21,409+3,303.9% | Added |
| Oregon Public Employees Retirement Fund | 22,016 | $1.41M | 0.02% | +416+1.9% | Added |
| Park Avenue Securities LLC | 21,897 | $1.40M | 0.01% | +557+2.6% | Added |
| JustInvest LLC | 21,514 | $1.38M | 0.02% | +825+4.0% | Added |
| Hennion & Walsh Asset Management, Inc. | 21,166 | $1.36M | 0.05% | +4,373+26.0% | Added |
| Tealwood Asset Management Inc | 20,460 | $1.31M | 0.58% | +150+0.7% | Added |
| Scott Marsh Financial, LLC | 20,362 | $1.30M | 0.48% | +20,362 | New |
| Polen Capital Management LLC | 20,135 | $1.29M | 0.00% | −88,982−81.5% | Reduced |
| Centiva Capital, LP | 19,796 | $1.27M | 0.08% | +19,796 | New |
| Diversify Wealth Management, LLC | 16,279 | $1.24M | 0.08% | +2,840+21.1% | Added |
| Connor, Clark & Lunn Investment Management Ltd. | 19,142 | $1.23M | 0.00% | +19,142 | New |
| Great Lakes Advisors, LLC | 18,928 | $1.21M | 0.01% | −1,633−7.9% | Reduced |
| Epoch Investment Partners, Inc. | 18,289 | $1.17M | 0.01% | +2,903+18.9% | Added |
| Pathstone Holdings, LLC | 18,230 | $1.17M | 0.00% | −6,140−25.2% | Reduced |
| Zacks Investment Management | 17,928 | $1.15M | 0.01% | +17,928 | New |
| Mariner, LLC | 17,911 | $1.15M | 0.00% | +1,448+8.8% | Added |
| Pictet Asset Management Holding SA | 17,748 | $1.14M | 0.00% | −452−2.5% | Reduced |