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 |
|---|---|---|---|---|---|
| Crossmark Global Holdings, Inc. | 6,546 | $601.5K | 0.01% | +25+0.4% | Added |
| Integrated Advisors Network LLC | 6,475 | $595.0K | 0.03% | −834−11.4% | Reduced |
| Himension Fund | 6,460 | $593.6K | 0.04% | +3,990+161.5% | Added |
| Argent Capital Management LLC | 6,403 | $588.4K | 0.02% | +6,403 | New |
| Harbor Capital Advisors, Inc. | 6,403 | $588.0K | 0.05% | −2,847−30.8% | Reduced |
| Calamos Advisors LLC | 6,316 | $580.4K | 0.00% | −3,026−32.4% | Reduced |
| TCG Advisory Services, LLC | 6,260 | $575.2K | 0.02% | −21−0.3% | Reduced |
| Inspire Advisors, LLC | 6,220 | $571.6K | 0.05% | +6,220 | New |
| VGI Partners Ltd | 6,000 | $551.3K | 0.03% | +2,000+50.0% | Added |
| Global X Japan Co., Ltd. | 5,945 | $546.3K | 0.04% | +560+10.4% | Added |
| Atria Investments LLC | 5,938 | $545.6K | 0.01% | −1,332−18.3% | Reduced |
| M.E. Allison & Co., Inc. | 5,897 | $541.9K | 0.37% | 00.0% | Unchanged |
| Inceptionr LLC | 5,816 | $534.4K | 0.15% | −5,846−50.1% | Reduced |
| Greenwood Capital Associates LLC | 5,656 | $519.7K | 0.06% | −705−11.1% | Reduced |
| Qube Research & Technologies Ltd | 5,648 | $519.0K | 0.00% | −23,469−80.6% | Reduced |
| AE Wealth Management LLC | 5,553 | $510.3K | 0.00% | +313+6.0% | Added |
| Two Sigma Securities, LLC | 5,549 | $509.9K | 0.07% | +2,047+58.5% | Added |
| Squarepoint Ops LLC | 5,496 | $505.0K | 0.00% | +5,496 | New |
| Global Retirement Partners, LLC | 5,460 | $501.7K | 0.01% | +3,195+141.1% | Added |
| Jane Street Group, LLC | 5,455 | $501.3K | 0.00% | −187,695−97.2% | Reduced |
| Northwestern Mutual Wealth Management Co | 5,362 | $492.7K | 0.00% | +751+16.3% | Added |
| Alps Advisors Inc | 5,356 | $492.2K | 0.00% | +59+1.1% | Added |
| Coldstream Capital Management Inc | 5,317 | $488.6K | 0.01% | −386−6.8% | Reduced |
| Systematic Alpha Investments, LLC | 5,300 | $487.0K | 0.02% | +5,300 | New |
| Aviva PLC | 5,246 | $482.1K | 0.00% | −540−9.3% | Reduced |
| M&T Bank Corp | 5,233 | $481.2K | 0.00% | +272+5.5% | Added |
| Blair William & Co | 5,055 | $464.5K | 0.00% | +155+3.2% | Added |
| Ak Global Asset Management, LLC | 5,000 | $459.4K | 0.40% | +5,000 | New |
| Rockland Trust Co | 4,996 | $459.1K | 0.02% | 00.0% | Unchanged |
| Abel Hall, LLC | 4,994 | $458.9K | 0.11% | +4,994 | New |
| Commonwealth Equity Services, LLC | 4,897 | $450.0K | 0.00% | −7,852−61.6% | Reduced |
| Nisa Investment Advisors, LLC | 4,891 | $449.4K | 0.00% | −27−0.5% | Reduced |
| Vontobel Holding Ltd. | 4,879 | $448.3K | 0.00% | −624−11.3% | Reduced |
| TSFG, LLC | 4,856 | $446.0K | 0.07% | +50+1.0% | Added |
| GAMMA Investing LLC | 4,833 | $444.1K | 0.02% | +153+3.3% | Added |
| Bank Julius Baer & Co. Ltd, Zurich | 4,598 | $422.5K | 0.00% | +572+14.2% | Added |
| Merit Financial Group, LLC | 4,586 | $421.4K | 0.00% | +526+13.0% | Added |
| Cresset Asset Management, LLC | 4,488 | $412.4K | 0.00% | +587+15.0% | Added |
| CoreCap Advisors, LLC | 4,367 | $401.3K | 0.01% | −330−7.0% | Reduced |
| CI Private Wealth, LLC | 4,297 | $395.2K | 0.00% | −2,108−32.9% | Reduced |
| Buckingham Strategic Partners | 4,181 | $384.2K | 0.00% | −1,383−24.9% | Reduced |
| Larson Financial Group LLC | 4,120 | $378.6K | 0.01% | −155−3.6% | Reduced |
| Verition Fund Management LLC | 4,091 | $375.9K | 0.00% | −2,306−36.0% | Reduced |
| Forum Financial Management, LP | 3,891 | $357.5K | 0.00% | 00.0% | Unchanged |
| Simplex Trading, LLC | 3,884 | $356.9K | 0.01% | +3,884 | New |
| Meeder Advisory Services, Inc. | 3,883 | $356.8K | 0.02% | +114+3.0% | Added |
| Skopos Labs, Inc. | 3,785 | $354.2K | 0.02% | +3,785 | New |
| Snowden Capital Advisors LLC | 3,841 | $352.9K | 0.01% | +1,849+92.8% | Added |
| Oak Ridge Investments LLC | 3,828 | $351.8K | 0.02% | +1,805+89.2% | Added |
| Keybank National Association | 3,806 | $349.7K | 0.00% | −909−19.3% | Reduced |
| Callan Family Office, LLC | 3,710 | $340.9K | 0.01% | +1,676+82.4% | Added |
| Shelton Capital Management | 3,677 | $337.9K | 0.01% | −227−5.8% | Reduced |
| Vise Technologies, Inc. | 3,627 | $333.3K | 0.01% | +781+27.4% | Added |
| Truvestments Capital LLC | 3,607 | $331.4K | 0.06% | −184−4.9% | Reduced |
| Freestone Grove Partners LP | 3,574 | $328.4K | 0.00% | +3,574 | New |
| Ethic Inc. | 3,510 | $322.5K | 0.00% | +359+11.4% | Added |
| Schonfeld Strategic Advisors LLC | 3,505 | $322.1K | 0.00% | +3,505 | New |
| Occudo Quantitative Strategies LP | 3,494 | $321.1K | 0.02% | +3,494 | New |
| Greenleaf Trust | 3,486 | $320.3K | 0.00% | +749+27.4% | Added |
| Ashton Thomas Private Wealth, LLC | 3,445 | $316.6K | 0.01% | +110+3.3% | Added |
| Oarsman Capital, Inc. | 3,420 | $314.3K | 0.04% | 00.0% | Unchanged |
| CIBC Asset Management Inc | 3,410 | $313.3K | 0.00% | 00.0% | Unchanged |
| ProCore Advisors, LLC | 3,381 | $310.7K | 0.32% | +3,381 | New |
| Concurrent Investment Advisors, LLC | 3,354 | $308.2K | 0.00% | +3,354 | New |
| City Center Advisors, LLC | 3,338 | $306.7K | 0.28% | −592−15.1% | Reduced |
| HHM Wealth Advisors, LLC | 3,335 | $306.5K | 0.04% | 00.0% | Unchanged |
| KBC Group NV | 3,316 | $305.0K | 0.00% | +357+12.1% | Added |
| Journey Retirement Planning & Investment Management LLC | 3,312 | $304.3K | 0.06% | +3,312 | New |
| Fifth Third Wealth Advisors LLC | 3,304 | $303.6K | 0.01% | −31−0.9% | Reduced |
| Clearstead Advisors, LLC | 3,168 | $291.1K | 0.00% | +656+26.1% | Added |
| Adams Wealth Management | 3,018 | $281.2K | 0.06% | 00.0% | Unchanged |
| CacheTech Inc. | 3,018 | $281.2K | 0.05% | 00.0% | Unchanged |
| National Bank of Canada | 3,046 | $279.7K | 0.00% | +1,187+63.9% | Added |
| Colony Group, LLC | 2,928 | $269.1K | 0.00% | +967+49.3% | Added |
| Journey Strategic Wealth LLC | 2,877 | $264.4K | 0.01% | +2+0.1% | Added |
| Public Employees Retirement System of Ohio | 2,871 | $263.8K | 0.00% | −19−0.7% | Reduced |
| VisionPoint Advisory Group, LLC | 2,824 | $259.5K | 0.05% | +422+17.6% | Added |
| Hantz Financial Services, Inc. | 2,765 | $254.0K | 0.00% | +1,290+87.5% | Added |
| Virtu Financial LLC | 2,756 | $253.0K | 0.01% | +2,756 | New |
| Mirabella Financial Services LLP | 2,737 | $251.5K | 0.02% | +2,737 | New |
| Gagnon Securities LLC | 2,711 | $249.1K | 0.05% | 00.0% | Unchanged |
| Rockefeller Capital Management L.P. | 2,684 | $246.6K | 0.00% | +489+22.3% | Added |
| Krilogy Financial LLC | 2,157 | $246.3K | 0.01% | +108+5.3% | Added |
| VARCOV Co. | 2,672 | $245.5K | 0.10% | +2,672 | New |
| Aigen Investment Management, LP | 2,636 | $242.2K | 0.06% | +2,636 | New |
| Ewa, LLC | 2,616 | $240.4K | 0.06% | −22−0.8% | Reduced |
| Twinbeech Capital LP | 2,600 | $238.9K | 0.02% | +2,600 | New |
| Everence Capital Management Inc | 2,590 | $238.0K | 0.01% | 00.0% | Unchanged |
| AlphaGrep UK Ltd | 2,577 | $236.8K | 0.08% | +2,577 | New |
| Net Worth Advisory Group | 2,576 | $236.7K | 0.05% | +44+1.7% | Added |
| Exchange Traded Concepts, LLC | 2,575 | $236.6K | 0.00% | +2,575 | New |
| JDH Wealth Management, LLC | 2,570 | $236.2K | 0.16% | −2−0.1% | Reduced |
| Jag Capital Management, LLC | 2,563 | $235.5K | 0.03% | +2,563 | New |
| United Capital Financial Advisers, LLC | 2,523 | $231.8K | 0.00% | −170−6.3% | Reduced |
| Smartleaf Asset Management LLC | 2,434 | $230.5K | 0.01% | −497−17.0% | Reduced |
| Parallel Advisors, LLC | 2,503 | $230.0K | 0.00% | +120+5.0% | Added |
| Meiji Yasuda Asset Management Co Ltd. | 2,500 | $229.7K | 0.01% | 00.0% | Unchanged |
| Corient IA LLC | 2,500 | $229.7K | 0.22% | 00.0% | Unchanged |
| First Manhattan Co | 2,495 | $229.3K | 0.00% | 00.0% | Unchanged |
| Hollencrest Capital Management | 2,485 | $228.3K | 0.01% | +309+14.2% | Added |