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, Q4 2025
Institutional positions in Rambus Inc as of Dec 31, 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
- 554
- +50 vs. Q3 2025
- Shares held
- 99.8M
- +1.42M (+1.4%) vs. Q3 2025
- Total value
- $9.18B
- −$1.08B (−10.5%) vs. Q3 2025
- New holders
- 103
- 190 more added
- Sold out
- 53
- 195 more reduced
9 institutions that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 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 | 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, Q4 2025
Shares, value and share of portfolio for each institution holding Rambus Inc; share changes are against Q3 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Eventide Asset Management, LLC | 10,330 | $949.2K | 0.01% | 00.0% | Unchanged |
| Encompass More Asset Management | 10,349 | $951.0K | 0.18% | +10,349 | New |
| Wealth Enhancement Advisory Services, LLC | 10,048 | $974.7K | 0.00% | +685+7.3% | Added |
| Public Employees Retirement Association of Colorado | 10,766 | $989.0K | 0.00% | 00.0% | Unchanged |
| Bokf, NA | 10,766 | $989.3K | 0.02% | −56−0.5% | Reduced |
| BNC Wealth Management, LLC | 11,068 | $1.02M | 0.26% | −500−4.3% | Reduced |
| Bailard, Inc. | 11,079 | $1.02M | 0.02% | −11−0.1% | Reduced |
| Gibbs Wealth Management | 11,113 | $1.04M | 0.25% | −551−4.7% | Reduced |
| Jump Financial, LLC | 11,499 | $1.06M | 0.01% | +11,499 | New |
| Portside Wealth Group, LLC | 11,515 | $1.06M | 0.14% | +1,297+12.7% | Added |
| Edgestream Partners, L.P. | 11,739 | $1.08M | 0.03% | −13,946−54.3% | Reduced |
| FIL Ltd | 11,774 | $1.08M | 0.00% | +11,774 | New |
| Bank of Montreal | 11,892 | $1.09M | 0.00% | −147−1.2% | Reduced |
| Jennison Associates LLC | 11,972 | $1.10M | 0.00% | +6,566+121.5% | Added |
| Amundi | 12,371 | $1.14M | 0.00% | +4,760+62.5% | Added |
| Evergreen Capital Management LLC | 12,625 | $1.16M | 0.03% | +3,720+41.8% | Added |
| Kovitz Investment Group Partners, LLC | 12,789 | $1.18M | 0.03% | −2,928−18.6% | Reduced |
| Entropy Technologies, LP | 12,810 | $1.18M | 0.06% | +12,810 | New |
| The PNC Financial Services Group, Inc. | 12,969 | $1.19M | 0.00% | +962+8.0% | Added |
| Xponance, Inc. | 13,212 | $1.21M | 0.01% | −2,093−13.7% | Reduced |
| Cookson Peirce & Co Inc | 13,607 | $1.25M | 0.05% | +13,607 | New |
| Moody National Bank Trust Division | 13,785 | $1.27M | 0.12% | −8,190−37.3% | Reduced |
| Susquehanna International Group, LLP | 13,834 | $1.27M | 0.00% | +3,485+33.7% | Added |
| Campbell & CO Investment Adviser LLC | 14,091 | $1.29M | 0.06% | +14,091 | New |
| Wesbanco Bank Inc | 14,300 | $1.31M | 0.04% | −8,509−37.3% | Reduced |
| Diversify Advisory Services, LLC | 12,293 | $1.33M | 0.04% | +516+4.4% | Added |
| Virginia Retirement Systems Et Al | 14,710 | $1.35M | 0.01% | +2,550+21.0% | Added |
| First Citizens Bank & Trust Co | 14,813 | $1.36M | 0.03% | −77−0.5% | Reduced |
| Quadrant Capital Group LLC | 14,876 | $1.37M | 0.04% | +87+0.6% | Added |
| Credit Agricole S A | 15,114 | $1.39M | 0.00% | 00.0% | Unchanged |
| FORA Capital, LLC | 15,846 | $1.46M | 0.18% | +9,590+153.3% | Added |
| GF Fund Management Co. Ltd. | 15,975 | $1.47M | 0.03% | −69,318−81.3% | Reduced |
| CWM, LLC | 16,185 | $1.49M | 0.00% | +1,341+9.0% | Added |
| Marshall Wace, LLP | 16,300 | $1.50M | 0.00% | +16,300 | New |
| Penn Capital Management Co Inc | 16,705 | $1.56M | 0.12% | −135,120−89.0% | Reduced |
| Cambridge Investment Research Advisors, Inc. | 17,021 | $1.56M | 0.00% | −1,753−9.3% | Reduced |
| Horizon Investments, LLC | 17,024 | $1.56M | 0.02% | −1,453−7.9% | Reduced |
| Envestnet Portfolio Solutions, Inc. | 17,075 | $1.57M | 0.01% | +280+1.7% | Added |
| Epoch Investment Partners, Inc. | 17,603 | $1.62M | 0.01% | −2,561−12.7% | Reduced |
| PEAK6 LLC | 17,648 | $1.62M | 0.04% | +17,648 | New |
| Gotham Asset Management, LLC | 17,785 | $1.63M | 0.01% | +14,480+438.1% | Added |
| Great Lakes Advisors, LLC | 18,224 | $1.67M | 0.01% | −195−1.1% | Reduced |
| Gould Capital, LLC | 18,387 | $1.69M | 1.04% | +448+2.5% | Added |
| State of Alaska, Department of Revenue | 18,476 | $1.70M | 0.02% | +6,901+59.6% | Added |
| Diversify Wealth Management, LLC | 17,783 | $1.70M | 0.08% | +1,030+6.1% | Added |
| D. E. Shaw & Co., Inc. | 18,491 | $1.70M | 0.00% | −67,612−78.5% | Reduced |
| Cambiar Investors LLC | 18,494 | $1.70M | 0.08% | −5,253−22.1% | Reduced |
| B. Metzler seel. Sohn & Co. AG | 18,658 | $1.71M | 0.01% | −13,074−41.2% | Reduced |
| Park Avenue Securities LLC | 18,860 | $1.73M | 0.01% | −527−2.7% | Reduced |
| Tealwood Asset Management Inc | 19,014 | $1.75M | 0.78% | −510−2.6% | Reduced |
| Aurora Investment Counsel | 19,198 | $1.76M | 0.93% | −4,400−18.6% | Reduced |
| Mariner, LLC | 19,358 | $1.78M | 0.00% | −513−2.6% | Reduced |
| Pacer Advisors, Inc. | 20,459 | $1.88M | 0.00% | +1,595+8.5% | Added |
| HSBC Holdings PLC | 20,434 | $1.89M | 0.00% | +7,733+60.9% | Added |
| Walleye Capital LLC | 20,794 | $1.91M | 0.01% | +20,794 | New |
| US Bancorp | 21,132 | $1.94M | 0.00% | +8,381+65.7% | Added |
| Oregon Public Employees Retirement Fund | 21,516 | $1.98M | 0.03% | −200−0.9% | Reduced |
| JustInvest LLC | 21,720 | $2.00M | 0.02% | −99−0.5% | Reduced |
| New Mexico Educational Retirement Board | 22,100 | $2.03M | 0.06% | 00.0% | Unchanged |
| Teacher Retirement System of Texas | 22,771 | $2.09M | 0.01% | −14,265−38.5% | Reduced |
| KLP Kapitalforvaltning AS | 23,000 | $2.11M | 0.01% | +600+2.7% | Added |
| Quantinno Capital Management LP | 23,402 | $2.15M | 0.00% | +3,430+17.2% | Added |
| Guggenheim Capital LLC | 23,505 | $2.16M | 0.02% | +9,154+63.8% | Added |
| TD Asset Management Inc | 24,010 | $2.21M | 0.00% | −1,296−5.1% | Reduced |
| Northwestern Mutual Investment Management Company, LLC | 24,085 | $2.21M | 0.03% | +103+0.4% | Added |
| Skandinaviska Enskilda Banken AB (publ) | 24,177 | $2.22M | 0.01% | +980+4.2% | Added |
| Azzad Asset Management Inc | 24,187 | $2.22M | 0.22% | −638−2.6% | Reduced |
| Elo Mutual Pension Insurance Co | 24,212 | $2.22M | 0.03% | +7,750+47.1% | Added |
| Illinois Municipal Retirement Fund | 24,340 | $2.24M | 0.03% | +5,845+31.6% | Added |
| STRS Ohio | 24,600 | $2.26M | 0.01% | 00.0% | Unchanged |
| Tower Research Capital LLC (TRC) | 24,705 | $2.27M | 0.05% | +20,930+554.4% | Added |
| Mackenzie Financial Corp | 24,149 | $2.28M | 0.00% | +5,736+31.2% | Added |
| State of Michigan Retirement System | 25,400 | $2.33M | 0.01% | −200−0.8% | Reduced |
| Hennion & Walsh Asset Management, Inc. | 25,979 | $2.39M | 0.08% | −516−1.9% | Reduced |
| Truist Financial Corp | 26,033 | $2.39M | 0.00% | +23,127+795.8% | Added |
| Nissay Asset Management Corp | 26,105 | $2.40M | 0.01% | +3,848+17.3% | Added |
| Linden Thomas Advisory Services, LLC | 26,259 | $2.41M | 0.24% | −143−0.5% | Reduced |
| Pathstone Holdings, LLC | 26,549 | $2.44M | 0.01% | +6,544+32.7% | Added |
| State Board of Administration of Florida Retirement System | 26,583 | $2.44M | 0.00% | −2,027−7.1% | Reduced |
| F/M Investments LLC | 26,710 | $2.45M | 0.09% | +26,710 | New |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 26,938 | $2.48M | 0.01% | −676−2.4% | Reduced |
| Meritage Portfolio Management | 27,432 | $2.52M | 0.17% | −1,357−4.7% | Reduced |
| Diversified Trust Co | 28,355 | $2.61M | 0.05% | −1,267−4.3% | Reduced |
| Natixis Advisors, L.P. | 28,366 | $2.61M | 0.00% | +2,308+8.9% | Added |
| Cetera Investment Advisers | 28,391 | $2.61M | 0.00% | +7,528+36.1% | Added |
| Ensign Peak Advisors, Inc | 28,440 | $2.61M | 0.00% | −9,881−25.8% | Reduced |
| South Dakota Investment Council | 28,613 | $2.63M | 0.05% | −10,200−26.3% | Reduced |
| Ameritas Investment Partners, Inc. | 28,644 | $2.63M | 0.08% | −643−2.2% | Reduced |
| New Age Alpha Advisors, LLC | 28,668 | $2.63M | 0.11% | +28,668 | New |
| Police & Firemen's Retirement System of New Jersey | 28,951 | $2.66M | 0.02% | −1,183−3.9% | Reduced |
| Y-Intercept (Hong Kong) Ltd | 29,450 | $2.71M | 0.06% | +29,450 | New |
| Stifel Financial Corp | 29,473 | $2.71M | 0.00% | +8,879+43.1% | Added |
| Investors Towarzystwo Funduszy Inwestycyjnych Spolka Akcyjna | 29,750 | $2.73M | 1.04% | 00.0% | Unchanged |
| Arizona State Retirement System | 29,760 | $2.73M | 0.01% | −1,999−6.3% | Reduced |
| Louisiana State Employees Retirement System | 29,800 | $2.74M | 0.05% | −200−0.7% | Reduced |
| Stephens Inc | 29,936 | $2.75M | 0.03% | −6,206−17.2% | Reduced |
| Point72 Asset Management, L.P. | 30,021 | $2.76M | 0.00% | −136,646−82.0% | Reduced |
| Cerity Partners LLC | 30,476 | $2.80M | 0.00% | −2,307−7.0% | Reduced |
| Hancock Whitney Corp | 30,528 | $2.81M | 0.05% | +693+2.3% | Added |
| Comerica Bank | 30,625 | $2.81M | 0.01% | −25,265−45.2% | Reduced |