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, 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 | 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, 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 |
|---|---|---|---|---|---|
| Shell Asset Management Co | 4,615 | $295.0K | 0.01% | +808+21.2% | Added |
| Blair William & Co | 4,540 | $290.7K | 0.00% | 00.0% | Unchanged |
| CI Private Wealth, LLC | 4,494 | $287.7K | 0.00% | −606−11.9% | Reduced |
| TD Asset Management Inc | 4,490 | $287.4K | 0.00% | +4,490 | New |
| XTX Topco Ltd | 4,471 | $286.2K | 0.01% | −31,104−87.4% | Reduced |
| GAMMA Investing LLC | 4,431 | $283.7K | 0.02% | −142−3.1% | Reduced |
| Nisa Investment Advisors, LLC | 4,243 | $271.6K | 0.00% | +314+8.0% | Added |
| Mitsubishi UFJ Trust & Banking Corp | 4,131 | $264.5K | 0.00% | 00.0% | Unchanged |
| City Center Advisors, LLC | 4,110 | $263.1K | 0.28% | +4,110 | New |
| ZWJ Investment Counsel Inc | 4,102 | $262.6K | 0.01% | +4,102 | New |
| Merit Financial Group, LLC | 4,085 | $261.5K | 0.00% | +4,085 | New |
| Ethic Inc. | 4,036 | $258.3K | 0.00% | +4,036 | New |
| Bank Julius Baer & Co. Ltd, Zurich | 4,029 | $257.9K | 0.00% | −769−16.0% | Reduced |
| NJ State Employees Deferred Compensation Plan | 4,000 | $256.1K | 0.03% | 00.0% | Unchanged |
| Colony Group, LLC | 3,955 | $253.2K | 0.00% | +3,955 | New |
| Shelton Capital Management | 3,904 | $249.9K | 0.01% | −208−5.1% | Reduced |
| Oarsman Capital, Inc. | 3,900 | $249.7K | 0.04% | +3,900 | New |
| MeadowBrook Investment Advisors LLC | 3,780 | $242.0K | 0.22% | −120−3.1% | Reduced |
| Meeder Advisory Services, Inc. | 3,717 | $238.0K | 0.01% | +3,717 | New |
| Axq Capital, LP | 3,694 | $236.5K | 0.08% | +3,694 | New |
| Callan Family Office, LLC | 3,642 | $233.2K | 0.01% | +3,642 | New |
| Stephens Inc | 3,530 | $226.0K | 0.00% | −8,162−69.8% | Reduced |
| Principal Street Partners, LLC | 3,488 | $223.3K | 0.02% | +3,488 | New |
| Journey Strategic Wealth LLC | 3,439 | $220.2K | 0.01% | +3,439 | New |
| Forum Financial Management, LP | 3,430 | $219.6K | 0.00% | +3,430 | New |
| CIBC Asset Management Inc | 3,410 | $218.3K | 0.00% | +3,410 | New |
| HHM Wealth Advisors, LLC | 3,364 | $215.4K | 0.03% | −165−4.7% | Reduced |
| O'Shaughnessy Asset Management, LLC | 3,334 | $213.4K | 0.00% | +3,334 | New |
| Fifth Third Wealth Advisors LLC | 3,296 | $211.0K | 0.01% | +3,296 | New |
| Cresset Asset Management, LLC | 3,282 | $210.1K | 0.00% | +3,282 | New |
| Ashton Thomas Private Wealth, LLC | 3,237 | $207.2K | 0.01% | +3,237 | New |
| New Insight Wealth Advisors | 3,236 | $207.2K | 0.09% | +3,236 | New |
| Capstone Investment Advisors, LLC | 3,194 | $204.5K | 0.00% | +3,194 | New |
| Clearstead Advisors, LLC | 3,104 | $198.7K | 0.00% | +910+41.5% | Added |
| KBC Group NV | 2,959 | $189.0K | 0.00% | −1,806−37.9% | Reduced |
| Smartleaf Asset Management LLC | 2,658 | $170.1K | 0.01% | +2,237+531.4% | Added |
| Global Retirement Partners, LLC | 1,926 | $123.3K | 0.00% | +1,926 | New |
| Parallel Advisors, LLC | 1,880 | $120.4K | 0.00% | +251+15.4% | Added |
| Northwest Capital Management Inc | 1,700 | $108.8K | 0.06% | −300−15.0% | Reduced |
| Stonehage Fleming Financial Services Holdings Ltd | 1,634 | $104.6K | 0.00% | +1,634 | New |
| Quantbot Technologies LP | 1,592 | $101.9K | 0.00% | +1,592 | New |
| Harbour Investments, Inc. | 1,522 | $97.4K | 0.00% | 00.0% | Unchanged |
| Walleye Capital LLC | 1,513 | $96.9K | 0.00% | +560+58.8% | Added |
| Fifth Third Bancorp | 1,497 | $95.8K | 0.00% | +79+5.6% | Added |
| Bayforest Capital Ltd | 1,483 | $94.9K | 0.04% | +1,227+479.3% | Added |
| Allworth Financial LP | 1,480 | $94.8K | 0.00% | +1,013+216.9% | Added |
| Ronald Blue Trust, Inc. | 1,426 | $91.3K | 0.00% | +130+10.0% | Added |
| Versant Capital Management, Inc | 1,304 | $83.5K | 0.01% | −203−13.5% | Reduced |
| Signaturefd, LLC | 1,288 | $82.5K | 0.00% | +166+14.8% | Added |
| MAI Capital Management | 1,277 | $81.8K | 0.00% | +36+2.9% | Added |
| Jones Financial Companies LLLP | 1,267 | $81.1K | 0.00% | +15+1.2% | Added |
| Umb Bank N A | 1,185 | $75.9K | 0.00% | −48−3.9% | Reduced |
| NBC Securities, Inc. | 1,187 | $75.0K | 0.01% | −8,039−87.1% | Reduced |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 1,089 | $70.0K | 0.00% | +1,089 | New |
| Skopos Labs, Inc. | 1,051 | $67.3K | 0.01% | +78+8.0% | Added |
| Principal Securities, Inc. | 1,001 | $64.1K | 0.00% | +783+359.2% | Added |
| Optiver Holding B.V. | 947 | $60.6K | 0.00% | −149−13.6% | Reduced |
| Farther Finance Advisors, LLC | 878 | $56.2K | 0.00% | −326−27.1% | Reduced |
| State of Wyoming | 824 | $52.8K | 0.01% | −247−23.1% | Reduced |
| EverSource Wealth Advisors, LLC | 777 | $49.7K | 0.00% | +353+83.3% | Added |
| Orion Capital Management LLC | 703 | $45.0K | 0.02% | 00.0% | Unchanged |
| Meeder Asset Management Inc | 679 | $43.5K | 0.00% | +679 | New |
| Hantz Financial Services, Inc. | 639 | $41.0K | 0.00% | +596+1,386.0% | Added |
| PenderFund Capital Management Ltd. | 601 | $38.5K | 0.01% | +302+101.0% | Added |
| Bartlett & Co. Wealth Management LLC | 500 | $32.0K | 0.00% | 00.0% | Unchanged |
| TSFG, LLC | 496 | $32.0K | 0.01% | 00.0% | Unchanged |
| Banque Cantonale Vaudoise | 491 | $31.0K | 0.00% | 00.0% | Unchanged |
| Massmutual Trust Co FSB | 475 | $30.4K | 0.00% | +125+35.7% | Added |
| Ci Investments Inc. | 474 | $30.0K | 0.00% | +58+13.9% | Added |
| Bessemer Group Inc | 463 | $30.0K | 0.00% | +238+105.8% | Added |
| Covestor Ltd | 461 | $29.0K | 0.02% | −1,701−78.7% | Reduced |
| Federation des caisses Desjardins du Quebec | 430 | $27.5K | 0.00% | 00.0% | Unchanged |
| Riggs Asset Managment Co. Inc. | 421 | $27.0K | 0.01% | +21+5.3% | Added |
| True Wealth Design, LLC | 420 | $26.9K | 0.01% | +260+162.5% | Added |
| Rise Advisors, LLC | 405 | $25.9K | 0.01% | +40+11.0% | Added |
| Whittier Trust Co of Nevada Inc | 364 | $23.3K | 0.00% | 00.0% | Unchanged |
| Private Wealth Asset Management, LLC | 339 | $21.7K | 0.00% | 00.0% | Unchanged |
| Tradewinds Capital Management, LLC | 296 | $18.9K | 0.00% | 00.0% | Unchanged |
| IFP Advisors, Inc | 195 | $18.2K | 0.00% | +129+195.5% | Added |
| Sterling Capital Management LLC | 261 | $16.7K | 0.00% | +149+133.0% | Added |
| Maryland Capital Advisors Inc. | 256 | $16.4K | 0.01% | −227−47.0% | Reduced |
| Larson Financial Group LLC | 248 | $15.9K | 0.00% | −609−71.1% | Reduced |
| Kestra Investment Management, LLC | 266 | $15.7K | 0.00% | +157+144.0% | Added |
| First Horizon Advisors, Inc. | 243 | $15.6K | 0.00% | +175+257.4% | Added |
| Essential Partners LLC | 237 | $15.2K | 0.01% | +237 | New |
| Rothschild Investment LLC | 235 | $15.0K | 0.00% | +5+2.2% | Added |
| Annis Gardner Whiting Capital Advisors, LLC | 215 | $13.8K | 0.00% | +215 | New |
| Fairway Wealth LLC | 200 | $12.8K | 0.00% | 00.0% | Unchanged |
| Aventura Private Wealth, LLC | 199 | $12.7K | 0.01% | −75−27.4% | Reduced |
| Cullen/Frost Bankers, Inc. | 192 | $12.3K | 0.00% | +192 | New |
| Quarry LP | 168 | $10.8K | 0.00% | −190−53.1% | Reduced |
| Fairscale Capital, LLC | 132 | $9.76K | 0.01% | 00.0% | Unchanged |
| Key Financial Inc | 137 | $8.77K | 0.00% | 00.0% | Unchanged |
| Leonteq Securities AG | 136 | $8.71K | 0.00% | +43+46.2% | Added |
| Huntington National Bank | 119 | $7.62K | 0.00% | −24−16.8% | Reduced |
| Rakuten Securities, Inc. | 107 | $6.85K | 0.00% | +97+970.0% | Added |
| First Pacific Financial | 104 | $6.66K | 0.00% | +22+26.8% | Added |
| Kozak & Associates, Inc. | 100 | $6.48K | 0.00% | +100 | New |
| Spire Wealth Management | 100 | $6.40K | 0.00% | −162−61.8% | Reduced |
| Geneos Wealth Management Inc. | 100 | $6.40K | 0.00% | 00.0% | Unchanged |