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 Wyoming | 824 | $52.8K | 0.01% | −247−23.1% | Reduced |
| Farther Finance Advisors, LLC | 878 | $56.2K | 0.00% | −326−27.1% | Reduced |
| Optiver Holding B.V. | 947 | $60.6K | 0.00% | −149−13.6% | Reduced |
| Principal Securities, Inc. | 1,001 | $64.1K | 0.00% | +783+359.2% | Added |
| Skopos Labs, Inc. | 1,051 | $67.3K | 0.01% | +78+8.0% | Added |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 1,089 | $70.0K | 0.00% | +1,089 | New |
| NBC Securities, Inc. | 1,187 | $75.0K | 0.01% | −8,039−87.1% | Reduced |
| Umb Bank N A | 1,185 | $75.9K | 0.00% | −48−3.9% | Reduced |
| Jones Financial Companies LLLP | 1,267 | $81.1K | 0.00% | +15+1.2% | Added |
| MAI Capital Management | 1,277 | $81.8K | 0.00% | +36+2.9% | Added |
| Signaturefd, LLC | 1,288 | $82.5K | 0.00% | +166+14.8% | Added |
| Versant Capital Management, Inc | 1,304 | $83.5K | 0.01% | −203−13.5% | Reduced |
| Ronald Blue Trust, Inc. | 1,426 | $91.3K | 0.00% | +130+10.0% | Added |
| Allworth Financial LP | 1,480 | $94.8K | 0.00% | +1,013+216.9% | Added |
| Bayforest Capital Ltd | 1,483 | $94.9K | 0.04% | +1,227+479.3% | Added |
| Fifth Third Bancorp | 1,497 | $95.8K | 0.00% | +79+5.6% | Added |
| Walleye Capital LLC | 1,513 | $96.9K | 0.00% | +560+58.8% | Added |
| Harbour Investments, Inc. | 1,522 | $97.4K | 0.00% | 00.0% | Unchanged |
| Quantbot Technologies LP | 1,592 | $101.9K | 0.00% | +1,592 | New |
| Stonehage Fleming Financial Services Holdings Ltd | 1,634 | $104.6K | 0.00% | +1,634 | New |
| Northwest Capital Management Inc | 1,700 | $108.8K | 0.06% | −300−15.0% | Reduced |
| Parallel Advisors, LLC | 1,880 | $120.4K | 0.00% | +251+15.4% | Added |
| Global Retirement Partners, LLC | 1,926 | $123.3K | 0.00% | +1,926 | New |
| Smartleaf Asset Management LLC | 2,658 | $170.1K | 0.01% | +2,237+531.4% | Added |
| KBC Group NV | 2,959 | $189.0K | 0.00% | −1,806−37.9% | Reduced |
| Clearstead Advisors, LLC | 3,104 | $198.7K | 0.00% | +910+41.5% | Added |
| Capstone Investment Advisors, LLC | 3,194 | $204.5K | 0.00% | +3,194 | New |
| New Insight Wealth Advisors | 3,236 | $207.2K | 0.09% | +3,236 | New |
| Ashton Thomas Private Wealth, LLC | 3,237 | $207.2K | 0.01% | +3,237 | New |
| Cresset Asset Management, LLC | 3,282 | $210.1K | 0.00% | +3,282 | New |
| Fifth Third Wealth Advisors LLC | 3,296 | $211.0K | 0.01% | +3,296 | New |
| O'Shaughnessy Asset Management, LLC | 3,334 | $213.4K | 0.00% | +3,334 | New |
| HHM Wealth Advisors, LLC | 3,364 | $215.4K | 0.03% | −165−4.7% | Reduced |
| CIBC Asset Management Inc | 3,410 | $218.3K | 0.00% | +3,410 | New |
| Forum Financial Management, LP | 3,430 | $219.6K | 0.00% | +3,430 | New |
| Journey Strategic Wealth LLC | 3,439 | $220.2K | 0.01% | +3,439 | New |
| Principal Street Partners, LLC | 3,488 | $223.3K | 0.02% | +3,488 | New |
| Stephens Inc | 3,530 | $226.0K | 0.00% | −8,162−69.8% | Reduced |
| Callan Family Office, LLC | 3,642 | $233.2K | 0.01% | +3,642 | New |
| Axq Capital, LP | 3,694 | $236.5K | 0.08% | +3,694 | New |
| Meeder Advisory Services, Inc. | 3,717 | $238.0K | 0.01% | +3,717 | New |
| MeadowBrook Investment Advisors LLC | 3,780 | $242.0K | 0.22% | −120−3.1% | Reduced |
| Oarsman Capital, Inc. | 3,900 | $249.7K | 0.04% | +3,900 | New |
| Shelton Capital Management | 3,904 | $249.9K | 0.01% | −208−5.1% | Reduced |
| Colony Group, LLC | 3,955 | $253.2K | 0.00% | +3,955 | New |
| NJ State Employees Deferred Compensation Plan | 4,000 | $256.1K | 0.03% | 00.0% | Unchanged |
| Bank Julius Baer & Co. Ltd, Zurich | 4,029 | $257.9K | 0.00% | −769−16.0% | Reduced |
| Ethic Inc. | 4,036 | $258.3K | 0.00% | +4,036 | New |
| Merit Financial Group, LLC | 4,085 | $261.5K | 0.00% | +4,085 | New |
| ZWJ Investment Counsel Inc | 4,102 | $262.6K | 0.01% | +4,102 | New |
| City Center Advisors, LLC | 4,110 | $263.1K | 0.28% | +4,110 | New |
| Mitsubishi UFJ Trust & Banking Corp | 4,131 | $264.5K | 0.00% | 00.0% | Unchanged |
| Nisa Investment Advisors, LLC | 4,243 | $271.6K | 0.00% | +314+8.0% | Added |
| GAMMA Investing LLC | 4,431 | $283.7K | 0.02% | −142−3.1% | Reduced |
| XTX Topco Ltd | 4,471 | $286.2K | 0.01% | −31,104−87.4% | Reduced |
| TD Asset Management Inc | 4,490 | $287.4K | 0.00% | +4,490 | New |
| CI Private Wealth, LLC | 4,494 | $287.7K | 0.00% | −606−11.9% | Reduced |
| Blair William & Co | 4,540 | $290.7K | 0.00% | 00.0% | Unchanged |
| Shell Asset Management Co | 4,615 | $295.0K | 0.01% | +808+21.2% | Added |
| Brinker Capital Investments, LLC | 4,673 | $299.2K | 0.00% | +4,673 | New |
| Keybank National Association | 4,715 | $301.9K | 0.00% | +4,715 | New |
| AE Wealth Management LLC | 4,741 | $303.5K | 0.00% | +7+0.1% | Added |
| Gotham Asset Management, LLC | 4,933 | $315.8K | 0.00% | +4,933 | New |
| M&T Bank Corp | 4,982 | $318.9K | 0.00% | +104+2.1% | Added |
| Rockland Trust Co | 4,996 | $319.8K | 0.02% | 00.0% | Unchanged |
| Buckingham Strategic Partners | 5,109 | $326.7K | 0.00% | −69−1.3% | Reduced |
| Lido Advisors, LLC | 5,150 | $329.7K | 0.00% | −409−7.4% | Reduced |
| Engineers Gate Manager LP | 5,170 | $331.0K | 0.00% | −14,978−74.3% | Reduced |
| Prosperity Wealth Management, Inc. | 5,245 | $335.8K | 0.12% | +5,245 | New |
| Readystate Asset Management LP | 5,275 | $337.7K | 0.01% | +5,275 | New |
| Sequoia Financial Advisors, LLC | 5,297 | $339.1K | 0.00% | +256+5.1% | Added |
| Pacer Advisors, Inc. | 5,528 | $353.9K | 0.00% | −2,555−31.6% | Reduced |
| Coldstream Capital Management Inc | 5,578 | $357.1K | 0.01% | −40−0.7% | Reduced |
| MQS Management LLC | 5,612 | $359.3K | 0.20% | +5,612 | New |
| Dakota Wealth Management | 5,681 | $363.7K | 0.01% | +189+3.4% | Added |
| M.E. Allison & Co., Inc. | 5,897 | $377.5K | 0.30% | 00.0% | Unchanged |
| Dynamic Technology Lab Private Ltd | 5,960 | $382.0K | 0.05% | +5,960 | New |
| Counterpoint Mutual Funds LLC | 6,041 | $386.7K | 0.03% | +6,041 | New |
| Penserra Capital Management LLC | 6,263 | $400.0K | 0.01% | +6,263 | New |
| TCG Advisory Services, LLC | 6,300 | $403.3K | 0.01% | +6,300 | New |
| Private Advisor Group, LLC | 6,407 | $410.2K | 0.00% | +6,407 | New |
| Mercer Global Advisors Inc | 6,464 | $413.8K | 0.00% | −672−9.4% | Reduced |
| Independent Financial Group, LLC | 6,500 | $416.1K | 0.01% | 00.0% | Unchanged |
| Northwestern Mutual Wealth Management Co | 6,594 | $422.1K | 0.00% | +775+13.3% | Added |
| Alps Advisors Inc | 6,670 | $427.0K | 0.00% | +81+1.2% | Added |
| Crossmark Global Holdings, Inc. | 6,721 | $430.3K | 0.01% | +84+1.3% | Added |
| MML Investors Services, LLC | 6,754 | $432.0K | 0.00% | +787+13.2% | Added |
| Yorktown Management & Research Co Inc | 7,000 | $448.1K | 0.43% | 00.0% | Unchanged |
| Great Valley Advisor Group, Inc. | 7,200 | $460.9K | 0.01% | −1,650−18.6% | Reduced |
| Evergreen Capital Management LLC | 7,272 | $465.6K | 0.01% | −61−0.8% | Reduced |
| Integrated Advisors Network LLC | 7,306 | $467.7K | 0.02% | −2,034−21.8% | Reduced |
| Financiere des Professionnels - Fonds d,investissement inc. | 7,317 | $468.4K | 0.03% | +7,317 | New |
| Advisors Asset Management, Inc. | 7,328 | $469.1K | 0.01% | −1,314−15.2% | Reduced |
| Truvestments Capital LLC | 7,406 | $474.1K | 0.09% | −639−7.9% | Reduced |
| Norden Group LLC | 7,447 | $476.8K | 0.05% | +381+5.4% | Added |
| Empowered Funds, LLC | 7,462 | $477.7K | 0.01% | −15,288−67.2% | Reduced |
| Hancock Whitney Corp | 7,467 | $478.0K | 0.01% | +2,971+66.1% | Added |
| K.J. Harrison & Partners Inc | 7,500 | $480.1K | 0.08% | 00.0% | Unchanged |
| Wolverine Trading, LLC | 7,522 | $481.4K | 0.01% | +7,522 | New |
| TownSquare Capital, LLC | 7,727 | $494.7K | 0.05% | −90,676−92.1% | Reduced |