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 |
|---|---|---|---|---|---|
| Renaissance Group LLC | 93,665 | $4.85M | 0.21% | +17,776+23.4% | Added |
| Envestnet Asset Management Inc | 84,263 | $4.36M | 0.00% | +10,325+14.0% | Added |
| Great West Life Assurance Co | 83,555 | $4.33M | 0.01% | −8,356−9.1% | Reduced |
| Capital Fund Management S.A. | 81,311 | $4.21M | 0.05% | −165,682−67.1% | Reduced |
| Thornburg Investment Management Inc | 81,120 | $4.20M | 0.06% | −6,964−7.9% | Reduced |
| BNP Paribas Arbitrage, SA | 80,670 | $4.18M | 0.00% | +23,449+41.0% | Added |
| Intech Investment Management LLC | 80,473 | $4.17M | 0.04% | +22,677+39.2% | Added |
| LPL Financial LLC | 80,016 | $4.14M | 0.00% | +16,652+26.3% | Added |
| Bridgewater Associates, LP | 78,079 | $4.04M | 0.02% | +70,934+992.8% | Added |
| Harbor Capital Advisors, Inc. | 76,619 | $3.97M | 0.18% | −9,295−10.8% | Reduced |
| Ellsworth Advisors, LLC | 74,709 | $3.87M | 1.01% | +74,709 | New |
| Vident Advisory, LLC | 73,268 | $3.79M | 0.06% | −446−0.6% | Reduced |
| Primecap Management Co | 72,900 | $3.77M | 0.00% | −9,600−11.6% | Reduced |
| Rice Hall James & Associates, LLC | 68,669 | $3.56M | 0.21% | −205−0.3% | Reduced |
| New York State Teachers Retirement System | 65,161 | $3.37M | 0.01% | +2,804+4.5% | Added |
| Hillsdale Investment Management Inc. | 64,600 | $3.34M | 0.17% | +19,200+42.3% | Added |
| Alberta Investment Management Corp | 60,968 | $3.16M | 0.02% | +13,828+29.3% | Added |
| D. E. Shaw & Co., Inc. | 56,758 | $2.94M | 0.00% | −337,594−85.6% | Reduced |
| Creative Planning | 55,620 | $2.88M | 0.00% | +4,521+8.8% | Added |
| Barington Capital Group, L.P. | 55,000 | $2.85M | 2.99% | −65,000−54.2% | Reduced |
| Victory Capital Management Inc | 54,182 | $2.81M | 0.00% | +14,925+38.0% | Added |
| Teachers Retirement System of the State of Kentucky | 53,602 | $2.78M | 0.03% | −8,670−13.9% | Reduced |
| Lisanti Capital Growth, LLC | 51,925 | $2.69M | 0.80% | +51,925 | New |
| Amalgamated Bank | 46,920 | $2.43M | 0.02% | −1,927−3.9% | Reduced |
| B. Metzler seel. Sohn & Co. AG | 46,479 | $2.41M | 0.02% | 00.0% | Unchanged |
| Moody Aldrich Partners LLC | 45,038 | $2.33M | 0.49% | −674−1.5% | Reduced |
| State of Tennessee, Treasury Department | 44,078 | $2.28M | 0.01% | 00.0% | Unchanged |
| Investors Towarzystwo Funduszy Inwestycyjnych Spolka Akcyjna | 43,650 | $2.26M | 1.07% | −20,350−31.8% | Reduced |
| Captrust Financial Advisors | 42,619 | $2.21M | 0.01% | −12,608−22.8% | Reduced |
| FMR LLC | 42,568 | $2.20M | 0.00% | −36,914−46.4% | Reduced |
| Aspetuck Financial Management LLC | 42,275 | $2.19M | 1.88% | 00.0% | Unchanged |
| Meritage Portfolio Management | 41,144 | $2.13M | 0.14% | +15,940+63.2% | Added |
| ProShare Advisors LLC | 40,318 | $2.09M | 0.00% | −8,709−17.8% | Reduced |
| Campbell Newman Asset Management Inc | 38,879 | $2.01M | 0.17% | −167−0.4% | Reduced |
| PEAK6 LLC | 38,261 | $1.98M | 0.08% | +19,702+106.2% | Added |
| ExodusPoint Capital Management, LP | 38,249 | $1.98M | 0.03% | +38,249 | New |
| Teacher Retirement System of Texas | 37,794 | $1.96M | 0.01% | +11,837+45.6% | Added |
| Ensign Peak Advisors, Inc | 37,476 | $1.94M | 0.00% | 00.0% | Unchanged |
| Yousif Capital Management, LLC | 36,401 | $1.88M | 0.02% | −1,053−2.8% | Reduced |
| Mirae Asset Global Investments Co., Ltd. | 34,979 | $1.88M | 0.01% | +31,011+781.5% | Added |
| XTX Topco Ltd | 35,575 | $1.84M | 0.09% | +35,575 | New |
| Danske Bank A/S | 34,393 | $1.78M | 0.01% | −1,377−3.8% | Reduced |
| Globeflex Capital L P | 33,989 | $1.76M | 0.16% | +33,989 | New |
| State of New Jersey Common Pension Fund D | 33,987 | $1.76M | 0.01% | −6,158−15.3% | Reduced |
| Bailard, Inc. | 32,446 | $1.68M | 0.04% | +1,155+3.7% | Added |
| Handelsbanken Fonder AB | 32,197 | $1.67M | 0.01% | 00.0% | Unchanged |
| Ameritas Investment Partners, Inc. | 31,883 | $1.65M | 0.06% | −643−2.0% | Reduced |
| State Board of Administration of Florida Retirement System | 31,123 | $1.61M | 0.00% | 00.0% | Unchanged |
| Diversified Trust Co | 30,592 | $1.58M | 0.04% | +551+1.8% | Added |
| Arizona State Retirement System | 30,515 | $1.58M | 0.01% | −722−2.3% | Reduced |
| Louisiana State Employees Retirement System | 29,900 | $1.55M | 0.03% | +300+1.0% | Added |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 29,129 | $1.51M | 0.00% | 00.0% | Unchanged |
| Cambiar Investors LLC | 28,834 | $1.49M | 0.06% | −5,692−16.5% | Reduced |
| South Dakota Investment Council | 28,613 | $1.48M | 0.03% | +1,000+3.6% | Added |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 28,599 | $1.48M | 0.00% | +28,599 | New |
| Man Group plc | 28,148 | $1.46M | 0.00% | −2,559−8.3% | Reduced |
| Squarepoint Ops LLC | 28,000 | $1.45M | 0.00% | +28,000 | New |
| Cetera Investment Advisers | 27,507 | $1.42M | 0.00% | +3,021+12.3% | Added |
| STRS Ohio | 27,300 | $1.41M | 0.01% | 00.0% | Unchanged |
| Linden Thomas Advisory Services, LLC | 26,846 | $1.39M | 0.18% | +448+1.7% | Added |
| Westpac Banking Corp | 26,843 | $1.39M | 0.10% | +26,843 | New |
| Mackenzie Financial Corp | 26,163 | $1.35M | 0.00% | +19,082+269.5% | Added |
| State of Michigan Retirement System | 25,500 | $1.32M | 0.01% | +300+1.2% | Added |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 25,476 | $1.32M | 0.01% | +1,939+8.2% | Added |
| Cerity Partners LLC | 25,443 | $1.32M | 0.00% | +10,367+68.8% | Added |
| Thrivent Financial for Lutherans | 24,988 | $1.29M | 0.00% | −88−0.4% | Reduced |
| Pathstone Holdings, LLC | 24,370 | $1.26M | 0.01% | +8,682+55.3% | Added |
| Public Employees Retirement System of Ohio | 24,127 | $1.25M | 0.00% | −7,659−24.1% | Reduced |
| CIBC World Markets Corp | 23,710 | $1.23M | 0.01% | +13,711+137.1% | Added |
| Northwestern Mutual Investment Management Company, LLC | 23,696 | $1.23M | 0.02% | +100.0% | Added |
| Toroso Investments, LLC | 23,435 | $1.21M | 0.01% | +6,723+40.2% | Added |
| Police & Firemen's Retirement System of New Jersey | 23,107 | $1.20M | 0.01% | +444+2.0% | Added |
| Renaissance Technologies LLC | 22,900 | $1.19M | 0.00% | +19,100+502.6% | Added |
| Empowered Funds, LLC | 22,750 | $1.18M | 0.02% | +5,783+34.1% | Added |
| New Mexico Educational Retirement Board | 22,100 | $1.14M | 0.04% | 00.0% | Unchanged |
| HSBC Holdings PLC | 22,192 | $1.14M | 0.00% | +2,868+14.8% | Added |
| OP Asset Management Ltd | 21,744 | $1.13M | 0.02% | +21,744 | New |
| Oregon Public Employees Retirement Fund | 21,600 | $1.12M | 0.02% | −100−0.5% | Reduced |
| Park Avenue Securities LLC | 21,340 | $1.10M | 0.01% | +21,340 | New |
| KLP Kapitalforvaltning AS | 21,300 | $1.10M | 0.01% | −1,000−4.5% | Reduced |
| JustInvest LLC | 20,689 | $1.07M | 0.02% | +1,654+8.7% | Added |
| Great Lakes Advisors, LLC | 20,561 | $1.06M | 0.01% | −15,394−42.8% | Reduced |
| Tealwood Asset Management Inc | 20,310 | $1.05M | 0.49% | +20,310 | New |
| Engineers Gate Manager LP | 20,148 | $1.04M | 0.02% | −18,046−47.2% | Reduced |
| Los Angeles Capital Management LLC | 19,637 | $1.02M | 0.00% | +38+0.2% | Added |
| Pictet Asset Management Holding SA | 18,200 | $948.1K | 0.00% | −183−1.0% | Reduced |
| Citadel Advisors LLC | 18,272 | $946.0K | 0.00% | −94,223−83.8% | Reduced |
| Guggenheim Capital LLC | 17,685 | $915.6K | 0.01% | −2,052−10.4% | Reduced |
| Inceptionr LLC | 17,252 | $893.2K | 0.27% | −11,110−39.2% | Reduced |
| Gould Capital, LLC | 17,080 | $884.3K | 0.62% | +17,080 | New |
| Trexquant Investment LP | 16,810 | $870.3K | 0.01% | −75,897−81.9% | Reduced |
| Hennion & Walsh Asset Management, Inc. | 16,793 | $869.5K | 0.04% | +3,884+30.1% | Added |
| Kovitz Investment Group Partners, LLC | 16,573 | $858.1K | 0.00% | +16,573 | New |
| Mariner, LLC | 16,463 | $852.4K | 0.00% | +3,990+32.0% | Added |
| Twin Tree Management, LP | 16,172 | $837.3K | 0.02% | +16,172 | New |
| Bank of Montreal | 15,693 | $812.5K | 0.00% | +213+1.4% | Added |
| Xponance, Inc. | 15,503 | $802.7K | 0.01% | +280+1.8% | Added |
| Virginia Retirement Systems Et Al | 15,460 | $800.4K | 0.01% | +15,460 | New |
| Epoch Investment Partners, Inc. | 15,386 | $796.6K | 0.00% | +6,698+77.1% | Added |
| The PNC Financial Services Group, Inc. | 15,169 | $785.4K | 0.00% | −1,115−6.8% | Reduced |