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 |
|---|---|---|---|---|---|
| D.A. Davidson & Co. | 2,400 | $220.5K | 0.00% | −263−9.9% | Reduced |
| Quest Partners LLC | 2,378 | $218.5K | 0.01% | +307+14.8% | Added |
| Farther Finance Advisors, LLC | 2,343 | $215.3K | 0.00% | +1,298+124.2% | Added |
| Prelude Capital Management, LLC | 2,327 | $213.8K | 0.02% | +2,327 | New |
| Trust Point Inc. | 2,317 | $212.9K | 0.02% | −200−7.9% | Reduced |
| Pinnacle Wealth Planning Services, Inc. | 2,235 | $205.4K | 0.02% | −38−1.7% | Reduced |
| Abacus Wealth Partners, LLC | 2,210 | $203.1K | 0.02% | +2,210 | New |
| Argent Trust Co | 2,206 | $202.7K | 0.01% | +2,206 | New |
| MeadowBrook Investment Advisors LLC | 2,160 | $198.5K | 0.17% | +40+1.9% | Added |
| Advisors Asset Management, Inc. | 2,151 | $197.7K | 0.00% | −5,211−70.8% | Reduced |
| Kestra Advisory Services, LLC | 2,087 | $191.8K | 0.00% | −42−2.0% | Reduced |
| Covestor Ltd | 2,054 | $188.0K | 0.10% | +1,379+204.3% | Added |
| GWM Advisors LLC | 1,956 | $179.7K | 0.00% | +1,362+229.3% | Added |
| Jones Financial Companies LLLP | 1,925 | $176.9K | 0.00% | −39−2.0% | Reduced |
| EverSource Wealth Advisors, LLC | 1,906 | $175.2K | 0.01% | +2+0.1% | Added |
| Vestcor Inc | 1,896 | $174.0K | 0.00% | +1,896 | New |
| Eurizon Capital SGR S.p.A. | 1,687 | $159.6K | 0.00% | +1,687 | New |
| Stonehage Fleming Financial Services Holdings Ltd | 1,634 | $150.1K | 0.00% | 00.0% | Unchanged |
| SBI Securities Co., Ltd. | 1,607 | $147.7K | 0.00% | +282+21.3% | Added |
| Harbour Investments, Inc. | 1,574 | $144.6K | 0.00% | +52+3.4% | Added |
| Fifth Third Bancorp | 1,541 | $141.6K | 0.00% | +13+0.9% | Added |
| SRS Capital Advisors, Inc. | 1,498 | $137.7K | 0.00% | −7,002−82.4% | Reduced |
| Allworth Financial LP | 1,440 | $132.3K | 0.00% | −161−10.1% | Reduced |
| Ronald Blue Trust, Inc. | 1,437 | $132.0K | 0.00% | +50+3.6% | Added |
| Signaturefd, LLC | 1,376 | $126.4K | 0.00% | +78+6.0% | Added |
| Daiwa Securities Group Inc. | 1,360 | $125.0K | 0.00% | +620+83.8% | Added |
| Versant Capital Management, Inc | 1,314 | $120.7K | 0.02% | +10+0.8% | Added |
| Bayforest Capital Ltd | 1,273 | $117.0K | 0.09% | −4,348−77.4% | Reduced |
| Umb Bank N A | 1,258 | $115.6K | 0.00% | +63+5.3% | Added |
| State of Wyoming | 1,100 | $101.1K | 0.01% | +265+31.7% | Added |
| MAI Capital Management | 1,074 | $98.7K | 0.00% | −138−11.4% | Reduced |
| Kemnay Advisory Services Inc. | 1,072 | $98.5K | 0.01% | +1,072 | New |
| Caitong International Asset Management Co., Ltd | 876 | $80.5K | 0.02% | +876 | New |
| Sterling Capital Management LLC | 705 | $64.8K | 0.00% | +443+169.1% | Added |
| Orion Capital Management LLC | 703 | $64.6K | 0.02% | 00.0% | Unchanged |
| Flagship Wealth Advisors, LLC | 700 | $64.3K | 0.02% | 00.0% | Unchanged |
| Banque Cantonale Vaudoise | 689 | $63.0K | 0.00% | +198+40.3% | Added |
| Optiver Holding B.V. | 565 | $51.9K | 0.00% | −183−24.5% | Reduced |
| Rakuten Securities, Inc. | 556 | $51.1K | 0.02% | −691−55.4% | Reduced |
| Migdal Insurance & Financial Holdings Ltd. | 548 | $50.0K | 0.00% | +548 | New |
| Bartlett & Co. Wealth Management LLC | 500 | $45.9K | 0.00% | 00.0% | Unchanged |
| Massmutual Trust Co FSB | 486 | $44.7K | 0.00% | −5−1.0% | Reduced |
| IFP Advisors, Inc | 463 | $42.5K | 0.00% | +16+3.6% | Added |
| Twin Tree Management, LP | 455 | $41.8K | 0.00% | −5,169−91.9% | Reduced |
| True Wealth Design, LLC | 418 | $38.4K | 0.01% | −2−0.5% | Reduced |
| Steward Partners Investment Advisory, LLC | 384 | $35.3K | 0.00% | +41+12.0% | Added |
| CIBC Private Wealth Group, LLC | 360 | $33.1K | 0.00% | −145−28.7% | Reduced |
| Private Wealth Asset Management, LLC | 339 | $31.2K | 0.00% | 00.0% | Unchanged |
| University of Texas/Texas Am Investment Managment Co | 308 | $28.3K | 0.00% | +308 | New |
| Spire Wealth Management | 302 | $27.8K | 0.00% | +201+199.0% | Added |
| Whittier Trust Co of Nevada Inc | 286 | $27.7K | 0.00% | −8−2.7% | Reduced |
| Tradewinds Capital Management, LLC | 296 | $27.2K | 0.01% | 00.0% | Unchanged |
| Torren Management, LLC | 280 | $25.7K | 0.01% | +280 | New |
| Acumen Wealth Advisors, LLC | 276 | $25.4K | 0.01% | +276 | New |
| Maryland Capital Advisors Inc. | 256 | $23.5K | 0.01% | 00.0% | Unchanged |
| Global Trust Asset Management, LLC | 255 | $23.4K | 0.01% | −1,775−87.4% | Reduced |
| Rothschild Investment LLC | 247 | $22.7K | 0.00% | +12+5.1% | Added |
| Meeder Asset Management Inc | 243 | $22.3K | 0.00% | +243 | New |
| Essential Partners LLC | 242 | $22.2K | 0.01% | −29−10.7% | Reduced |
| Steigerwald, Gordon & Koch Inc. | 236 | $21.7K | 0.00% | 00.0% | Unchanged |
| Private Trust Co NA | 232 | $21.3K | 0.00% | +152+190.0% | Added |
| PenderFund Capital Management Ltd. | 230 | $21.1K | 0.00% | −75−24.6% | Reduced |
| Crewe Advisors LLC | 224 | $20.6K | 0.00% | +44+24.4% | Added |
| Root Financial Partners, LLC | 224 | $20.6K | 0.00% | +34+17.9% | Added |
| Strategic Advocates LLC | 213 | $20.2K | 0.01% | +213 | New |
| Strive Financial Group ,LLC | 210 | $19.3K | 0.01% | +210 | New |
| Aventura Private Wealth, LLC | 199 | $18.3K | 0.01% | 00.0% | Unchanged |
| Macquarie Group Ltd | 163 | $15.0K | 0.00% | −292,042−99.9% | Reduced |
| Abound Wealth Management | 155 | $14.3K | 0.00% | −110−41.5% | Reduced |
| First Horizon Corp | 151 | $13.9K | 0.00% | +83+122.1% | Added |
| Contravisory Investment Management, Inc. | 142 | $13.0K | 0.00% | +142 | New |
| Key Financial Inc | 137 | $12.6K | 0.00% | 00.0% | Unchanged |
| Fairscale Capital, LLC | 132 | $12.1K | 0.01% | 00.0% | Unchanged |
| Aster Capital Management (DIFC) Ltd | 131 | $12.0K | 0.01% | +131 | New |
| Bell Investment Advisors, Inc | 117 | $10.8K | 0.00% | +52+80.0% | Added |
| Parkside Financial Bank & Trust | 108 | $9.93K | 0.00% | −41−27.5% | Reduced |
| JFS Wealth Advisors, LLC | 105 | $9.65K | 0.00% | +29+38.2% | Added |
| Quarry LP | 105 | $9.65K | 0.00% | +105 | New |
| SHP Wealth Management | 104 | $9.56K | 0.00% | +104 | New |
| Geneos Wealth Management Inc. | 100 | $9.19K | 0.00% | 00.0% | Unchanged |
| Wolff Wiese Magana LLC | 99 | $9.10K | 0.00% | +50+102.0% | Added |
| WPG Advisers, LLC | 99 | $9.10K | 0.01% | +99 | New |
| Farmers & Merchants Investments Inc | 97 | $8.91K | 0.00% | 00.0% | Unchanged |
| Huntington National Bank | 95 | $8.73K | 0.00% | −12−11.2% | Reduced |
| Sunbelt Securities, Inc. | 94 | $8.64K | 0.00% | 00.0% | Unchanged |
| First Pacific Financial | 88 | $8.09K | 0.00% | −9−9.3% | Reduced |
| Private Wealth Management Group, LLC | 88 | $8.09K | 0.00% | 00.0% | Unchanged |
| Rossby Financial, LCC | 75 | $6.89K | 0.00% | +75 | New |
| TD Waterhouse Canada Inc. | 75 | $6.89K | 0.00% | 00.0% | Unchanged |
| MJT & Associates Financial Advisory Group, Inc. | 74 | $6.80K | 0.01% | −8−9.8% | Reduced |
| SageView Advisory Group, LLC | 74 | $6.80K | 0.00% | +74 | New |
| Fortitude Family Office, LLC | 73 | $6.71K | 0.00% | +1+1.4% | Added |
| Mitsubishi UFJ Kokusai Asset Management Co., Ltd. | 65 | $6.45K | 0.00% | 00.0% | Unchanged |
| Keating Financial Advisory Services, Inc. | 58 | $5.33K | 0.00% | +58 | New |
| Brown Brothers Harriman & Co | 56 | $5.15K | 0.00% | 00.0% | Unchanged |
| Legacy Wealth Managment, LLC | 56 | $5.15K | 0.00% | +40+250.0% | Added |
| Financial Network Wealth Advisors LLC | 52 | $4.78K | 0.00% | 00.0% | Unchanged |
| Whittier Trust Co | 46 | $4.46K | 0.00% | 00.0% | Unchanged |
| Valley National Advisers Inc | 50 | $4.00K | 0.00% | +50 | New |
| Sachetta, LLC | 42 | $3.86K | 0.00% | 00.0% | Unchanged |