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, Q3 2025
Institutional positions in Rambus Inc as of Sep 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
- 513
- +62 vs. Q2 2025
- Shares held
- 98.8M
- +3.82M (+4.0%) vs. Q2 2025
- Total value
- $10.3B
- +$4.21B (+69.3%) vs. Q2 2025
- New holders
- 123
- 169 more added
- Sold out
- 61
- 163 more reduced
8 institutions that held it in Q2 2025 haven't filed for Q3 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q2 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, Q3 2025
Shares, value and share of portfolio for each institution holding Rambus Inc; share changes are against Q2 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Allworth Financial LP | 1,601 | $166.8K | 0.00% | +121+8.2% | Added |
| Fifth Third Bancorp | 1,528 | $159.2K | 0.00% | +31+2.1% | Added |
| Harbour Investments, Inc. | 1,522 | $158.6K | 0.00% | 00.0% | Unchanged |
| Hantz Financial Services, Inc. | 1,475 | $154.0K | 0.00% | +836+130.8% | Added |
| Leonteq Securities AG | 1,417 | $147.7K | 0.01% | +1,281+941.9% | Added |
| Ronald Blue Trust, Inc. | 1,387 | $144.5K | 0.00% | −39−2.7% | Reduced |
| SBI Securities Co., Ltd. | 1,325 | $138.1K | 0.00% | +1,279+2,780.4% | Added |
| Versant Capital Management, Inc | 1,304 | $135.9K | 0.02% | 00.0% | Unchanged |
| Signaturefd, LLC | 1,298 | $135.3K | 0.00% | +10+0.8% | Added |
| Picton Mahoney Asset Management | 1,285 | $134.0K | 0.00% | +1,285 | New |
| Rakuten Securities, Inc. | 1,247 | $129.9K | 0.05% | +1,140+1,065.4% | Added |
| MAI Capital Management | 1,212 | $126.3K | 0.00% | −65−5.1% | Reduced |
| Umb Bank N A | 1,195 | $124.5K | 0.00% | +10+0.8% | Added |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 1,100 | $115.0K | 0.00% | +11+1.0% | Added |
| Farther Finance Advisors, LLC | 1,045 | $108.9K | 0.00% | +167+19.0% | Added |
| Wexford Capital LP | 999 | $104.1K | 0.03% | +999 | New |
| State of Wyoming | 835 | $87.0K | 0.01% | +11+1.3% | Added |
| Optiver Holding B.V. | 748 | $77.9K | 0.00% | −199−21.0% | Reduced |
| Daiwa Securities Group Inc. | 740 | $77.0K | 0.00% | +740 | New |
| Principal Securities, Inc. | 730 | $76.1K | 0.00% | −271−27.1% | Reduced |
| Orion Capital Management LLC | 703 | $73.3K | 0.03% | 00.0% | Unchanged |
| Flagship Wealth Advisors, LLC | 700 | $72.9K | 0.02% | +700 | New |
| Advisory Services Network, LLC | 685 | $71.4K | 0.00% | +685 | New |
| Covestor Ltd | 675 | $70.0K | 0.04% | +214+46.4% | Added |
| Ci Investments Inc. | 661 | $69.0K | 0.00% | +187+39.5% | Added |
| GWM Advisors LLC | 594 | $61.9K | 0.00% | −8,011−93.1% | Reduced |
| CIBC Private Wealth Group, LLC | 505 | $52.6K | 0.00% | +466+1,194.9% | Added |
| Credit Industriel Et Commercial | 505 | $52.6K | 0.01% | +505 | New |
| Bartlett & Co. Wealth Management LLC | 500 | $52.1K | 0.00% | 00.0% | Unchanged |
| Massmutual Trust Co FSB | 491 | $51.2K | 0.00% | +16+3.4% | Added |
| Banque Cantonale Vaudoise | 491 | $51.0K | 0.00% | 00.0% | Unchanged |
| IFP Advisors, Inc | 447 | $46.6K | 0.00% | +252+129.2% | Added |
| Federation des caisses Desjardins du Quebec | 430 | $44.8K | 0.00% | 00.0% | Unchanged |
| True Wealth Design, LLC | 420 | $43.8K | 0.01% | 00.0% | Unchanged |
| Rise Advisors, LLC | 405 | $42.2K | 0.02% | 00.0% | Unchanged |
| Steward Partners Investment Advisory, LLC | 343 | $35.7K | 0.00% | +343 | New |
| Private Wealth Asset Management, LLC | 339 | $35.3K | 0.00% | 00.0% | Unchanged |
| Wealthspire Advisors, LLC | 323 | $33.7K | 0.00% | +323 | New |
| PenderFund Capital Management Ltd. | 305 | $31.8K | 0.01% | −296−49.3% | Reduced |
| Tradewinds Capital Management, LLC | 296 | $30.8K | 0.01% | 00.0% | Unchanged |
| Whittier Trust Co of Nevada Inc | 294 | $29.4K | 0.00% | −70−19.2% | Reduced |
| Essential Partners LLC | 271 | $28.2K | 0.01% | +34+14.3% | Added |
| Abound Wealth Management | 265 | $27.6K | 0.01% | +265 | New |
| Sterling Capital Management LLC | 262 | $27.3K | 0.00% | +1+0.4% | Added |
| Maryland Capital Advisors Inc. | 256 | $26.7K | 0.01% | 00.0% | Unchanged |
| Steigerwald, Gordon & Koch Inc. | 236 | $24.6K | 0.00% | +236 | New |
| Rothschild Investment LLC | 235 | $24.5K | 0.00% | 00.0% | Unchanged |
| Cullen/Frost Bankers, Inc. | 209 | $21.8K | 0.00% | +17+8.9% | Added |
| Aventura Private Wealth, LLC | 199 | $20.7K | 0.01% | 00.0% | Unchanged |
| Root Financial Partners, LLC | 190 | $19.8K | 0.00% | +190 | New |
| Crewe Advisors LLC | 180 | $18.8K | 0.00% | +180 | New |
| Parkside Financial Bank & Trust | 149 | $15.5K | 0.00% | +86+136.5% | Added |
| Key Financial Inc | 137 | $14.1K | 0.00% | 00.0% | Unchanged |
| Fairscale Capital, LLC | 132 | $13.8K | 0.01% | 00.0% | Unchanged |
| Huntington National Bank | 107 | $11.1K | 0.00% | −12−10.1% | Reduced |
| Hemington Wealth Management | 110 | $11.0K | 0.00% | +47+74.6% | Added |
| Spire Wealth Management | 101 | $10.5K | 0.00% | +1+1.0% | Added |
| Geneos Wealth Management Inc. | 100 | $10.4K | 0.00% | 00.0% | Unchanged |
| First Pacific Financial | 97 | $10.1K | 0.00% | −7−6.7% | Reduced |
| Farmers & Merchants Investments Inc | 97 | $10.1K | 0.00% | +7+7.8% | Added |
| Sunbelt Securities, Inc. | 94 | $9.79K | 0.00% | +94 | New |
| Private Wealth Management Group, LLC | 88 | $9.17K | 0.00% | 00.0% | Unchanged |
| MJT & Associates Financial Advisory Group, Inc. | 82 | $8.54K | 0.01% | +82 | New |
| Private Trust Co NA | 80 | $8.34K | 0.00% | 00.0% | Unchanged |
| JFS Wealth Advisors, LLC | 76 | $7.92K | 0.00% | +13+20.6% | Added |
| TD Waterhouse Canada Inc. | 75 | $7.73K | 0.00% | 00.0% | Unchanged |
| Fortitude Family Office, LLC | 72 | $7.50K | 0.00% | +9+14.3% | Added |
| GPS Wealth Strategies Group, LLC | 70 | $7.29K | 0.00% | 00.0% | Unchanged |
| First Horizon Corp | 68 | $7.09K | 0.00% | +68 | New |
| Bell Investment Advisors, Inc | 65 | $6.77K | 0.00% | −9−12.2% | Reduced |
| Mitsubishi UFJ Kokusai Asset Management Co., Ltd. | 65 | $6.77K | 0.00% | 00.0% | Unchanged |
| Brown Brothers Harriman & Co | 56 | $5.83K | 0.00% | 00.0% | Unchanged |
| Colonial Trust Co | 53 | $5.52K | 0.00% | −18−25.4% | Reduced |
| Financial Network Wealth Advisors LLC | 52 | $5.42K | 0.01% | 00.0% | Unchanged |
| Wolff Wiese Magana LLC | 49 | $5.11K | 0.00% | 00.0% | Unchanged |
| Whittier Trust Co | 46 | $4.60K | 0.00% | +46 | New |
| Sachetta, LLC | 42 | $4.38K | 0.00% | 00.0% | Unchanged |
| Mather Group, LLC. | 33 | $3.44K | 0.00% | +33 | New |
| Avion Wealth | 33 | $3.00K | 0.00% | −1−2.9% | Reduced |
| Toth Financial Advisory Corp | 28 | $2.92K | 0.00% | 00.0% | Unchanged |
| MV Capital Management, Inc. | 27 | $2.81K | 0.00% | 00.0% | Unchanged |
| Atlantic Trust, LLC | 25 | $2.60K | 0.00% | 00.0% | Unchanged |
| High Note Wealth, LLC | 25 | $2.60K | 0.00% | 00.0% | Unchanged |
| Manchester Capital Management LLC | 21 | $2.19K | 0.00% | +21 | New |
| Bogart Wealth, LLC | 21 | $2.19K | 0.00% | 00.0% | Unchanged |
| CBIZ Investment Advisory Services, LLC | 21 | $2.19K | 0.00% | +21 | New |
| Barrett & Company, Inc. | 20 | $2.08K | 0.00% | +20 | New |
| Legacy Wealth Managment, LLC | 16 | $1.67K | 0.00% | −17−51.5% | Reduced |
| Activest Wealth Management | 16 | $1.67K | 0.00% | 00.0% | Unchanged |
| JPL Wealth Management, LLC | 15 | $1.56K | 0.00% | +15 | New |
| Creative Financial Designs Inc | 14 | $1.46K | 0.00% | 00.0% | Unchanged |
| Bare Financial Services, Inc | 14 | $1.46K | 0.00% | 00.0% | Unchanged |
| Marquette Asset Management, LLC | 14 | $1.46K | 0.00% | +14 | New |
| Hughes Financial Services, LLC | 13 | $1.44K | 0.00% | 00.0% | Unchanged |
| Montag A & Associates Inc | 12 | $1.25K | 0.00% | +12 | New |
| CVA Family Office, LLC | 12 | $1.25K | 0.00% | 00.0% | Unchanged |
| Salomon & Ludwin, LLC | 12 | $1.20K | 0.00% | +12 | New |
| Financial Management Professionals, Inc. | 11 | $1.15K | 0.00% | 00.0% | Unchanged |
| Quent Capital, LLC | 11 | $1.15K | 0.00% | +11 | New |
| Prestige Wealth Management Group LLC | 10 | $1.04K | 0.00% | 00.0% | Unchanged |