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, Q1 2025
Institutional positions in Rambus Inc as of Mar 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
- 413
- +24 vs. Q4 2024
- Shares held
- 96.7M
- +4.72M (+5.1%) vs. Q4 2024
- Total value
- $5.01B
- +$145.7M (+3.0%) vs. Q4 2024
- New holders
- 78
- 159 more added
- Sold out
- 54
- 131 more reduced
6 institutions that held it in Q4 2024 haven't filed for Q1 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2024: 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, Q1 2025
Shares, value and share of portfolio for each institution holding Rambus Inc; share changes are against Q4 2024.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Covestor Ltd | 2,162 | $112.0K | 0.07% | −1,084−33.4% | Reduced |
| Headlands Technologies LLC | 2,160 | $111.8K | 0.01% | −25,156−92.1% | Reduced |
| Harvest Fund Management Co., Ltd | 2,003 | $104.0K | 0.01% | −1,626−44.8% | Reduced |
| Northwest Capital Management Inc | 2,000 | $103.5K | 0.04% | 00.0% | Unchanged |
| Skandinaviska Enskilda Banken AB (publ) | 1,857 | $96.2K | 0.00% | +1,148+161.9% | Added |
| Parallel Advisors, LLC | 1,629 | $84.3K | 0.00% | +414+34.1% | Added |
| Harbour Investments, Inc. | 1,522 | $78.8K | 0.00% | +1,502+7,510.0% | Added |
| Versant Capital Management, Inc | 1,507 | $78.0K | 0.01% | +799+112.9% | Added |
| Fifth Third Bancorp | 1,418 | $73.4K | 0.00% | +282+24.8% | Added |
| Jones Financial Companies LLLP | 1,252 | $67.2K | 0.00% | +177+16.5% | Added |
| Ronald Blue Trust, Inc. | 1,296 | $67.1K | 0.00% | −156−10.7% | Reduced |
| MAI Capital Management | 1,241 | $64.3K | 0.00% | −84−6.3% | Reduced |
| Umb Bank N A | 1,233 | $63.8K | 0.00% | +696+129.6% | Added |
| Farther Finance Advisors, LLC | 1,204 | $63.0K | 0.00% | +78+6.9% | Added |
| Signaturefd, LLC | 1,122 | $58.1K | 0.00% | +185+19.7% | Added |
| Optiver Holding B.V. | 1,096 | $56.7K | 0.00% | +320+41.2% | Added |
| State of Wyoming | 1,071 | $55.5K | 0.01% | +1,071 | New |
| Skopos Labs, Inc. | 973 | $50.4K | 0.01% | +968+19,360.0% | Added |
| Walleye Capital LLC | 953 | $49.3K | 0.00% | +319+50.3% | Added |
| Larson Financial Group LLC | 857 | $44.4K | 0.00% | +794+1,260.3% | Added |
| McIlrath & Eck, LLC | 804 | $41.6K | 0.01% | +804 | New |
| Orion Capital Management LLC | 703 | $36.4K | 0.02% | 00.0% | Unchanged |
| Quest Partners LLC | 648 | $33.5K | 0.00% | −7,574−92.1% | Reduced |
| V-Square Quantitative Management LLC | 508 | $26.3K | 0.00% | 00.0% | Unchanged |
| TSFG, LLC | 496 | $26.0K | 0.01% | +496 | New |
| Bartlett & Co. Wealth Management LLC | 500 | $25.9K | 0.00% | 00.0% | Unchanged |
| Maryland Capital Advisors Inc. | 483 | $25.0K | 0.01% | 00.0% | Unchanged |
| Banque Cantonale Vaudoise | 491 | $25.0K | 0.00% | +491 | New |
| Allworth Financial LP | 467 | $23.1K | 0.00% | +109+30.4% | Added |
| SBI Securities Co., Ltd. | 441 | $22.8K | 0.00% | +313+244.5% | Added |
| Smartleaf Asset Management LLC | 421 | $22.6K | 0.00% | −14−3.2% | Reduced |
| Federation des caisses Desjardins du Quebec | 430 | $22.3K | 0.00% | 00.0% | Unchanged |
| Ci Investments Inc. | 416 | $22.0K | 0.00% | −30−6.7% | Reduced |
| EverSource Wealth Advisors, LLC | 424 | $22.0K | 0.00% | −3,671−89.6% | Reduced |
| Riggs Asset Managment Co. Inc. | 400 | $20.7K | 0.01% | −11−2.7% | Reduced |
| Rise Advisors, LLC | 365 | $18.9K | 0.01% | −80−18.0% | Reduced |
| Whittier Trust Co of Nevada Inc | 364 | $18.8K | 0.00% | +364 | New |
| Quarry LP | 358 | $18.5K | 0.00% | −808−69.3% | Reduced |
| Massmutual Trust Co FSB | 350 | $18.1K | 0.00% | +77+28.2% | Added |
| Private Wealth Asset Management, LLC | 339 | $17.6K | 0.00% | +339 | New |
| Tradewinds Capital Management, LLC | 296 | $15.3K | 0.00% | 00.0% | Unchanged |
| Eq Wealth Advisors, LLC | 285 | $14.8K | 0.01% | +285 | New |
| Aventura Private Wealth, LLC | 274 | $14.2K | 0.01% | 00.0% | Unchanged |
| Spire Wealth Management | 262 | $13.6K | 0.00% | +162+162.0% | Added |
| Bayforest Capital Ltd | 256 | $13.3K | 0.01% | −444−63.4% | Reduced |
| Bessemer Group Inc | 225 | $12.0K | 0.00% | −2−0.9% | Reduced |
| Rothschild Investment LLC | 230 | $11.9K | 0.00% | +80+53.3% | Added |
| Clear Street Markets LLC | 223 | $11.5K | 0.01% | +223 | New |
| Principal Securities, Inc. | 218 | $11.5K | 0.00% | 00.0% | Unchanged |
| Fairway Wealth LLC | 200 | $10.4K | 0.00% | +200 | New |
| Hughes Financial Services, LLC | 166 | $8.68K | 0.00% | +166 | New |
| True Wealth Design, LLC | 160 | $8.28K | 0.00% | +21+15.1% | Added |
| Huntington National Bank | 143 | $7.40K | 0.00% | +76+113.4% | Added |
| Key Financial Inc | 137 | $7.09K | 0.00% | 00.0% | Unchanged |
| Fairscale Capital, LLC | 132 | $6.83K | 0.01% | 00.0% | Unchanged |
| Mather Group, LLC. | 113 | $5.85K | 0.00% | −33−22.6% | Reduced |
| Sterling Capital Management LLC | 112 | $5.80K | 0.00% | +2+1.8% | Added |
| Kestra Investment Management, LLC | 109 | $5.64K | 0.00% | +109 | New |
| Geneos Wealth Management Inc. | 100 | $5.18K | 0.00% | 00.0% | Unchanged |
| Leonteq Securities AG | 93 | $4.82K | 0.00% | −55−37.2% | Reduced |
| Bell Investment Advisors, Inc | 92 | $4.76K | 0.00% | +18+24.3% | Added |
| Private Wealth Management Group, LLC | 88 | $4.56K | 0.00% | 00.0% | Unchanged |
| Cape Investment Advisory, Inc. | 88 | $4.56K | 0.00% | −6−6.4% | Reduced |
| First Pacific Financial | 82 | $4.25K | 0.00% | +7+9.3% | Added |
| Farmers & Merchants Investments Inc | 82 | $4.25K | 0.00% | +37+82.2% | Added |
| Private Trust Co NA | 80 | $4.14K | 0.00% | 00.0% | Unchanged |
| Sachetta, LLC | 76 | $3.94K | 0.00% | 00.0% | Unchanged |
| SRS Capital Advisors, Inc. | 72 | $3.73K | 0.00% | +72 | New |
| Colonial Trust Co | 71 | $3.68K | 0.00% | +31+77.5% | Added |
| GPS Wealth Strategies Group, LLC | 70 | $3.62K | 0.00% | +70 | New |
| JFS Wealth Advisors, LLC | 69 | $3.57K | 0.00% | +11+19.0% | Added |
| First Horizon Advisors, Inc. | 68 | $3.52K | 0.00% | +18+36.0% | Added |
| IFP Advisors, Inc | 66 | $3.42K | 0.00% | +11+20.0% | Added |
| Mitsubishi UFJ Kokusai Asset Management Co., Ltd. | 65 | $3.37K | 0.00% | 00.0% | Unchanged |
| Atlantic Trust, LLC | 60 | $3.11K | 0.00% | +60 | New |
| NewSquare Capital LLC | 52 | $2.69K | 0.00% | +52 | New |
| Financial Network Wealth Advisors LLC | 52 | $2.69K | 0.00% | +52 | New |
| Sound Income Strategies, LLC | 50 | $2.59K | 0.00% | +50 | New |
| Wolff Wiese Magana LLC | 49 | $2.54K | 0.00% | 00.0% | Unchanged |
| Parkside Financial Bank & Trust | 43 | $2.23K | 0.00% | +39+975.0% | Added |
| Valley National Advisers Inc | 50 | $2.00K | 0.00% | 00.0% | Unchanged |
| Hantz Financial Services, Inc. | 43 | $2.00K | 0.00% | +43 | New |
| MV Capital Management, Inc. | 35 | $1.81K | 0.00% | 00.0% | Unchanged |
| Legacy Wealth Managment, LLC | 33 | $1.71K | 0.00% | 00.0% | Unchanged |
| South State Corp. | 31 | $1.61K | 0.00% | +31 | New |
| Stephens Consulting, LLC | 30 | $1.55K | 0.00% | +30 | New |
| High Note Wealth, LLC | 28 | $1.45K | 0.00% | −7−20.0% | Reduced |
| Creative Financial Designs Inc | 23 | $1.19K | 0.00% | −3−11.5% | Reduced |
| Hemington Wealth Management | 37 | $1.00K | 0.00% | +21+131.3% | Added |
| TD Private Client Wealth LLC | 16 | $828 | 0.00% | +16 | New |
| Caitong International Asset Management Co., Ltd | 14 | $725 | 0.00% | −661−97.9% | Reduced |
| Bare Financial Services, Inc | 14 | $725 | 0.00% | +14 | New |
| UMA Financial Services, Inc. | 12 | $622 | 0.00% | 00.0% | Unchanged |
| CVA Family Office, LLC | 12 | $621 | 0.00% | 00.0% | Unchanged |
| Cornerstone Planning Group LLC | 13 | $597 | 0.00% | +7+116.7% | Added |
| Financial Management Professionals, Inc. | 11 | $570 | 0.00% | 00.0% | Unchanged |
| CoreCap Advisors, LLC | 11 | $570 | 0.00% | +11 | New |
| Prestige Wealth Management Group LLC | 10 | $518 | 0.00% | 00.0% | Unchanged |
| Rakuten Securities, Inc. | 10 | $518 | 0.00% | 00.0% | Unchanged |
| WealthTrak Capital Management LLC | 10 | $518 | 0.00% | +5+100.0% | Added |