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, 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 | 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, 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 |
|---|---|---|---|---|---|
| Acumen Wealth Advisors, LLC | 276 | $25.4K | 0.01% | +276 | New |
| Torren Management, LLC | 280 | $25.7K | 0.01% | +280 | New |
| Tradewinds Capital Management, LLC | 296 | $27.2K | 0.01% | 00.0% | Unchanged |
| Whittier Trust Co of Nevada Inc | 286 | $27.7K | 0.00% | −8−2.7% | Reduced |
| Spire Wealth Management | 302 | $27.8K | 0.00% | +201+199.0% | Added |
| University of Texas/Texas Am Investment Managment Co | 308 | $28.3K | 0.00% | +308 | New |
| Private Wealth Asset Management, LLC | 339 | $31.2K | 0.00% | 00.0% | Unchanged |
| CIBC Private Wealth Group, LLC | 360 | $33.1K | 0.00% | −145−28.7% | Reduced |
| Steward Partners Investment Advisory, LLC | 384 | $35.3K | 0.00% | +41+12.0% | Added |
| True Wealth Design, LLC | 418 | $38.4K | 0.01% | −2−0.5% | Reduced |
| Twin Tree Management, LP | 455 | $41.8K | 0.00% | −5,169−91.9% | Reduced |
| IFP Advisors, Inc | 463 | $42.5K | 0.00% | +16+3.6% | Added |
| Massmutual Trust Co FSB | 486 | $44.7K | 0.00% | −5−1.0% | Reduced |
| Bartlett & Co. Wealth Management LLC | 500 | $45.9K | 0.00% | 00.0% | Unchanged |
| Migdal Insurance & Financial Holdings Ltd. | 548 | $50.0K | 0.00% | +548 | New |
| Rakuten Securities, Inc. | 556 | $51.1K | 0.02% | −691−55.4% | Reduced |
| Optiver Holding B.V. | 565 | $51.9K | 0.00% | −183−24.5% | Reduced |
| Banque Cantonale Vaudoise | 689 | $63.0K | 0.00% | +198+40.3% | Added |
| Flagship Wealth Advisors, LLC | 700 | $64.3K | 0.02% | 00.0% | Unchanged |
| Orion Capital Management LLC | 703 | $64.6K | 0.02% | 00.0% | Unchanged |
| Sterling Capital Management LLC | 705 | $64.8K | 0.00% | +443+169.1% | Added |
| Caitong International Asset Management Co., Ltd | 876 | $80.5K | 0.02% | +876 | New |
| Kemnay Advisory Services Inc. | 1,072 | $98.5K | 0.01% | +1,072 | New |
| MAI Capital Management | 1,074 | $98.7K | 0.00% | −138−11.4% | Reduced |
| State of Wyoming | 1,100 | $101.1K | 0.01% | +265+31.7% | Added |
| Umb Bank N A | 1,258 | $115.6K | 0.00% | +63+5.3% | Added |
| Bayforest Capital Ltd | 1,273 | $117.0K | 0.09% | −4,348−77.4% | Reduced |
| Versant Capital Management, Inc | 1,314 | $120.7K | 0.02% | +10+0.8% | Added |
| Daiwa Securities Group Inc. | 1,360 | $125.0K | 0.00% | +620+83.8% | Added |
| Signaturefd, LLC | 1,376 | $126.4K | 0.00% | +78+6.0% | Added |
| Ronald Blue Trust, Inc. | 1,437 | $132.0K | 0.00% | +50+3.6% | Added |
| Allworth Financial LP | 1,440 | $132.3K | 0.00% | −161−10.1% | Reduced |
| SRS Capital Advisors, Inc. | 1,498 | $137.7K | 0.00% | −7,002−82.4% | Reduced |
| Fifth Third Bancorp | 1,541 | $141.6K | 0.00% | +13+0.9% | Added |
| Harbour Investments, Inc. | 1,574 | $144.6K | 0.00% | +52+3.4% | Added |
| SBI Securities Co., Ltd. | 1,607 | $147.7K | 0.00% | +282+21.3% | Added |
| Stonehage Fleming Financial Services Holdings Ltd | 1,634 | $150.1K | 0.00% | 00.0% | Unchanged |
| Eurizon Capital SGR S.p.A. | 1,687 | $159.6K | 0.00% | +1,687 | New |
| Vestcor Inc | 1,896 | $174.0K | 0.00% | +1,896 | New |
| EverSource Wealth Advisors, LLC | 1,906 | $175.2K | 0.01% | +2+0.1% | Added |
| Jones Financial Companies LLLP | 1,925 | $176.9K | 0.00% | −39−2.0% | Reduced |
| GWM Advisors LLC | 1,956 | $179.7K | 0.00% | +1,362+229.3% | Added |
| Covestor Ltd | 2,054 | $188.0K | 0.10% | +1,379+204.3% | Added |
| Kestra Advisory Services, LLC | 2,087 | $191.8K | 0.00% | −42−2.0% | Reduced |
| Advisors Asset Management, Inc. | 2,151 | $197.7K | 0.00% | −5,211−70.8% | Reduced |
| MeadowBrook Investment Advisors LLC | 2,160 | $198.5K | 0.17% | +40+1.9% | Added |
| Argent Trust Co | 2,206 | $202.7K | 0.01% | +2,206 | New |
| Abacus Wealth Partners, LLC | 2,210 | $203.1K | 0.02% | +2,210 | New |
| Pinnacle Wealth Planning Services, Inc. | 2,235 | $205.4K | 0.02% | −38−1.7% | Reduced |
| Trust Point Inc. | 2,317 | $212.9K | 0.02% | −200−7.9% | Reduced |
| Prelude Capital Management, LLC | 2,327 | $213.8K | 0.02% | +2,327 | New |
| Farther Finance Advisors, LLC | 2,343 | $215.3K | 0.00% | +1,298+124.2% | Added |
| Quest Partners LLC | 2,378 | $218.5K | 0.01% | +307+14.8% | Added |
| D.A. Davidson & Co. | 2,400 | $220.5K | 0.00% | −263−9.9% | Reduced |
| Hollencrest Capital Management | 2,485 | $228.3K | 0.01% | +309+14.2% | Added |
| First Manhattan Co | 2,495 | $229.3K | 0.00% | 00.0% | Unchanged |
| 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 |
| Parallel Advisors, LLC | 2,503 | $230.0K | 0.00% | +120+5.0% | Added |
| Smartleaf Asset Management LLC | 2,434 | $230.5K | 0.01% | −497−17.0% | Reduced |
| United Capital Financial Advisers, LLC | 2,523 | $231.8K | 0.00% | −170−6.3% | Reduced |
| Jag Capital Management, LLC | 2,563 | $235.5K | 0.03% | +2,563 | New |
| JDH Wealth Management, LLC | 2,570 | $236.2K | 0.16% | −2−0.1% | Reduced |
| Exchange Traded Concepts, LLC | 2,575 | $236.6K | 0.00% | +2,575 | New |
| Net Worth Advisory Group | 2,576 | $236.7K | 0.05% | +44+1.7% | Added |
| AlphaGrep UK Ltd | 2,577 | $236.8K | 0.08% | +2,577 | New |
| Everence Capital Management Inc | 2,590 | $238.0K | 0.01% | 00.0% | Unchanged |
| Twinbeech Capital LP | 2,600 | $238.9K | 0.02% | +2,600 | New |
| Ewa, LLC | 2,616 | $240.4K | 0.06% | −22−0.8% | Reduced |
| Aigen Investment Management, LP | 2,636 | $242.2K | 0.06% | +2,636 | New |
| VARCOV Co. | 2,672 | $245.5K | 0.10% | +2,672 | New |
| Krilogy Financial LLC | 2,157 | $246.3K | 0.01% | +108+5.3% | Added |
| Rockefeller Capital Management L.P. | 2,684 | $246.6K | 0.00% | +489+22.3% | Added |
| Gagnon Securities LLC | 2,711 | $249.1K | 0.05% | 00.0% | Unchanged |
| Mirabella Financial Services LLP | 2,737 | $251.5K | 0.02% | +2,737 | New |
| Virtu Financial LLC | 2,756 | $253.0K | 0.01% | +2,756 | New |
| Hantz Financial Services, Inc. | 2,765 | $254.0K | 0.00% | +1,290+87.5% | Added |
| VisionPoint Advisory Group, LLC | 2,824 | $259.5K | 0.05% | +422+17.6% | Added |
| Public Employees Retirement System of Ohio | 2,871 | $263.8K | 0.00% | −19−0.7% | Reduced |
| Journey Strategic Wealth LLC | 2,877 | $264.4K | 0.01% | +2+0.1% | Added |
| Colony Group, LLC | 2,928 | $269.1K | 0.00% | +967+49.3% | Added |
| National Bank of Canada | 3,046 | $279.7K | 0.00% | +1,187+63.9% | Added |
| Adams Wealth Management | 3,018 | $281.2K | 0.06% | 00.0% | Unchanged |
| CacheTech Inc. | 3,018 | $281.2K | 0.05% | 00.0% | Unchanged |
| Clearstead Advisors, LLC | 3,168 | $291.1K | 0.00% | +656+26.1% | Added |
| Fifth Third Wealth Advisors LLC | 3,304 | $303.6K | 0.01% | −31−0.9% | Reduced |
| Journey Retirement Planning & Investment Management LLC | 3,312 | $304.3K | 0.06% | +3,312 | New |
| KBC Group NV | 3,316 | $305.0K | 0.00% | +357+12.1% | Added |
| HHM Wealth Advisors, LLC | 3,335 | $306.5K | 0.04% | 00.0% | Unchanged |
| City Center Advisors, LLC | 3,338 | $306.7K | 0.28% | −592−15.1% | Reduced |
| Concurrent Investment Advisors, LLC | 3,354 | $308.2K | 0.00% | +3,354 | New |
| ProCore Advisors, LLC | 3,381 | $310.7K | 0.32% | +3,381 | New |
| CIBC Asset Management Inc | 3,410 | $313.3K | 0.00% | 00.0% | Unchanged |
| Oarsman Capital, Inc. | 3,420 | $314.3K | 0.04% | 00.0% | Unchanged |
| Ashton Thomas Private Wealth, LLC | 3,445 | $316.6K | 0.01% | +110+3.3% | Added |
| Greenleaf Trust | 3,486 | $320.3K | 0.00% | +749+27.4% | Added |
| Occudo Quantitative Strategies LP | 3,494 | $321.1K | 0.02% | +3,494 | New |
| Schonfeld Strategic Advisors LLC | 3,505 | $322.1K | 0.00% | +3,505 | New |
| Ethic Inc. | 3,510 | $322.5K | 0.00% | +359+11.4% | Added |
| Freestone Grove Partners LP | 3,574 | $328.4K | 0.00% | +3,574 | New |