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, 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 | 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, 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 |
|---|---|---|---|---|---|
| Diversify Advisory Services, LLC | 12,677 | $624.6K | 0.04% | +4,205+49.6% | Added |
| Verition Fund Management LLC | 12,326 | $638.2K | 0.00% | −13,852−52.9% | Reduced |
| State of Alaska, Department of Revenue | 12,490 | $646.0K | 0.01% | +335+2.8% | Added |
| BNC Wealth Management, LLC | 12,568 | $650.7K | 0.23% | −1,500−10.7% | Reduced |
| Diversify Wealth Management, LLC | 13,439 | $662.1K | 0.05% | +13,439 | New |
| Commonwealth Equity Services, LLC | 13,052 | $676.0K | 0.00% | +510+4.1% | Added |
| Elo Mutual Pension Insurance Co | 13,146 | $680.6K | 0.02% | +13,146 | New |
| CWM, LLC | 13,241 | $686.0K | 0.00% | +4,303+48.1% | Added |
| Stifel Financial Corp | 14,225 | $736.5K | 0.00% | +2,022+16.6% | Added |
| Quadrant Capital Group LLC | 14,831 | $767.9K | 0.03% | +12,794+628.1% | Added |
| Quantinno Capital Management LP | 15,024 | $777.9K | 0.01% | +7,611+102.7% | Added |
| Nebula Research & Development LLC | 15,043 | $778.9K | 0.07% | −144−0.9% | Reduced |
| The PNC Financial Services Group, Inc. | 15,169 | $785.4K | 0.00% | −1,115−6.8% | Reduced |
| Epoch Investment Partners, Inc. | 15,386 | $796.6K | 0.00% | +6,698+77.1% | Added |
| Virginia Retirement Systems Et Al | 15,460 | $800.4K | 0.01% | +15,460 | New |
| Xponance, Inc. | 15,503 | $802.7K | 0.01% | +280+1.8% | Added |
| Bank of Montreal | 15,693 | $812.5K | 0.00% | +213+1.4% | Added |
| Twin Tree Management, LP | 16,172 | $837.3K | 0.02% | +16,172 | New |
| Mariner, LLC | 16,463 | $852.4K | 0.00% | +3,990+32.0% | Added |
| Kovitz Investment Group Partners, LLC | 16,573 | $858.1K | 0.00% | +16,573 | New |
| Hennion & Walsh Asset Management, Inc. | 16,793 | $869.5K | 0.04% | +3,884+30.1% | Added |
| Trexquant Investment LP | 16,810 | $870.3K | 0.01% | −75,897−81.9% | Reduced |
| Gould Capital, LLC | 17,080 | $884.3K | 0.62% | +17,080 | New |
| Inceptionr LLC | 17,252 | $893.2K | 0.27% | −11,110−39.2% | Reduced |
| Guggenheim Capital LLC | 17,685 | $915.6K | 0.01% | −2,052−10.4% | Reduced |
| Citadel Advisors LLC | 18,272 | $946.0K | 0.00% | −94,223−83.8% | Reduced |
| Pictet Asset Management Holding SA | 18,200 | $948.1K | 0.00% | −183−1.0% | Reduced |
| Los Angeles Capital Management LLC | 19,637 | $1.02M | 0.00% | +38+0.2% | Added |
| Engineers Gate Manager LP | 20,148 | $1.04M | 0.02% | −18,046−47.2% | Reduced |
| Tealwood Asset Management Inc | 20,310 | $1.05M | 0.49% | +20,310 | New |
| Great Lakes Advisors, LLC | 20,561 | $1.06M | 0.01% | −15,394−42.8% | Reduced |
| JustInvest LLC | 20,689 | $1.07M | 0.02% | +1,654+8.7% | Added |
| KLP Kapitalforvaltning AS | 21,300 | $1.10M | 0.01% | −1,000−4.5% | Reduced |
| Park Avenue Securities LLC | 21,340 | $1.10M | 0.01% | +21,340 | New |
| Oregon Public Employees Retirement Fund | 21,600 | $1.12M | 0.02% | −100−0.5% | Reduced |
| OP Asset Management Ltd | 21,744 | $1.13M | 0.02% | +21,744 | New |
| HSBC Holdings PLC | 22,192 | $1.14M | 0.00% | +2,868+14.8% | Added |
| New Mexico Educational Retirement Board | 22,100 | $1.14M | 0.04% | 00.0% | Unchanged |
| Empowered Funds, LLC | 22,750 | $1.18M | 0.02% | +5,783+34.1% | Added |
| Renaissance Technologies LLC | 22,900 | $1.19M | 0.00% | +19,100+502.6% | Added |
| Police & Firemen's Retirement System of New Jersey | 23,107 | $1.20M | 0.01% | +444+2.0% | Added |
| Toroso Investments, LLC | 23,435 | $1.21M | 0.01% | +6,723+40.2% | Added |
| Northwestern Mutual Investment Management Company, LLC | 23,696 | $1.23M | 0.02% | +100.0% | Added |
| CIBC World Markets Corp | 23,710 | $1.23M | 0.01% | +13,711+137.1% | Added |
| Public Employees Retirement System of Ohio | 24,127 | $1.25M | 0.00% | −7,659−24.1% | Reduced |
| Pathstone Holdings, LLC | 24,370 | $1.26M | 0.01% | +8,682+55.3% | Added |
| Thrivent Financial for Lutherans | 24,988 | $1.29M | 0.00% | −88−0.4% | Reduced |
| Cerity Partners LLC | 25,443 | $1.32M | 0.00% | +10,367+68.8% | Added |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 25,476 | $1.32M | 0.01% | +1,939+8.2% | Added |
| State of Michigan Retirement System | 25,500 | $1.32M | 0.01% | +300+1.2% | Added |
| Mackenzie Financial Corp | 26,163 | $1.35M | 0.00% | +19,082+269.5% | Added |
| Westpac Banking Corp | 26,843 | $1.39M | 0.10% | +26,843 | New |
| Linden Thomas Advisory Services, LLC | 26,846 | $1.39M | 0.18% | +448+1.7% | Added |
| STRS Ohio | 27,300 | $1.41M | 0.01% | 00.0% | Unchanged |
| Cetera Investment Advisers | 27,507 | $1.42M | 0.00% | +3,021+12.3% | Added |
| Squarepoint Ops LLC | 28,000 | $1.45M | 0.00% | +28,000 | New |
| Man Group plc | 28,148 | $1.46M | 0.00% | −2,559−8.3% | Reduced |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 28,599 | $1.48M | 0.00% | +28,599 | New |
| South Dakota Investment Council | 28,613 | $1.48M | 0.03% | +1,000+3.6% | Added |
| Cambiar Investors LLC | 28,834 | $1.49M | 0.06% | −5,692−16.5% | Reduced |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 29,129 | $1.51M | 0.00% | 00.0% | Unchanged |
| Louisiana State Employees Retirement System | 29,900 | $1.55M | 0.03% | +300+1.0% | Added |
| Arizona State Retirement System | 30,515 | $1.58M | 0.01% | −722−2.3% | Reduced |
| Diversified Trust Co | 30,592 | $1.58M | 0.04% | +551+1.8% | Added |
| State Board of Administration of Florida Retirement System | 31,123 | $1.61M | 0.00% | 00.0% | Unchanged |
| Ameritas Investment Partners, Inc. | 31,883 | $1.65M | 0.06% | −643−2.0% | Reduced |
| Handelsbanken Fonder AB | 32,197 | $1.67M | 0.01% | 00.0% | Unchanged |
| Bailard, Inc. | 32,446 | $1.68M | 0.04% | +1,155+3.7% | Added |
| State of New Jersey Common Pension Fund D | 33,987 | $1.76M | 0.01% | −6,158−15.3% | Reduced |
| Globeflex Capital L P | 33,989 | $1.76M | 0.16% | +33,989 | New |
| Danske Bank A/S | 34,393 | $1.78M | 0.01% | −1,377−3.8% | Reduced |
| XTX Topco Ltd | 35,575 | $1.84M | 0.09% | +35,575 | New |
| Mirae Asset Global Investments Co., Ltd. | 34,979 | $1.88M | 0.01% | +31,011+781.5% | Added |
| Yousif Capital Management, LLC | 36,401 | $1.88M | 0.02% | −1,053−2.8% | Reduced |
| Ensign Peak Advisors, Inc | 37,476 | $1.94M | 0.00% | 00.0% | Unchanged |
| Teacher Retirement System of Texas | 37,794 | $1.96M | 0.01% | +11,837+45.6% | Added |
| ExodusPoint Capital Management, LP | 38,249 | $1.98M | 0.03% | +38,249 | New |
| PEAK6 LLC | 38,261 | $1.98M | 0.08% | +19,702+106.2% | Added |
| Campbell Newman Asset Management Inc | 38,879 | $2.01M | 0.17% | −167−0.4% | Reduced |
| ProShare Advisors LLC | 40,318 | $2.09M | 0.00% | −8,709−17.8% | Reduced |
| Meritage Portfolio Management | 41,144 | $2.13M | 0.14% | +15,940+63.2% | Added |
| Aspetuck Financial Management LLC | 42,275 | $2.19M | 1.88% | 00.0% | Unchanged |
| FMR LLC | 42,568 | $2.20M | 0.00% | −36,914−46.4% | Reduced |
| Captrust Financial Advisors | 42,619 | $2.21M | 0.01% | −12,608−22.8% | Reduced |
| Investors Towarzystwo Funduszy Inwestycyjnych Spolka Akcyjna | 43,650 | $2.26M | 1.07% | −20,350−31.8% | Reduced |
| State of Tennessee, Treasury Department | 44,078 | $2.28M | 0.01% | 00.0% | Unchanged |
| Moody Aldrich Partners LLC | 45,038 | $2.33M | 0.49% | −674−1.5% | Reduced |
| B. Metzler seel. Sohn & Co. AG | 46,479 | $2.41M | 0.02% | 00.0% | Unchanged |
| Amalgamated Bank | 46,920 | $2.43M | 0.02% | −1,927−3.9% | Reduced |
| Lisanti Capital Growth, LLC | 51,925 | $2.69M | 0.80% | +51,925 | New |
| Teachers Retirement System of the State of Kentucky | 53,602 | $2.78M | 0.03% | −8,670−13.9% | Reduced |
| Victory Capital Management Inc | 54,182 | $2.81M | 0.00% | +14,925+38.0% | Added |
| Barington Capital Group, L.P. | 55,000 | $2.85M | 2.99% | −65,000−54.2% | Reduced |
| Creative Planning | 55,620 | $2.88M | 0.00% | +4,521+8.8% | Added |
| D. E. Shaw & Co., Inc. | 56,758 | $2.94M | 0.00% | −337,594−85.6% | Reduced |
| Alberta Investment Management Corp | 60,968 | $3.16M | 0.02% | +13,828+29.3% | Added |
| Hillsdale Investment Management Inc. | 64,600 | $3.34M | 0.17% | +19,200+42.3% | Added |
| New York State Teachers Retirement System | 65,161 | $3.37M | 0.01% | +2,804+4.5% | Added |
| Rice Hall James & Associates, LLC | 68,669 | $3.56M | 0.21% | −205−0.3% | Reduced |
| Primecap Management Co | 72,900 | $3.77M | 0.00% | −9,600−11.6% | Reduced |