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 2023
Institutional positions in Rambus Inc as of Mar 31, 2023. 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
- 337
- +36 vs. Q4 2022
- Shares held
- 93.7M
- +2.10M (+2.3%) vs. Q4 2022
- Total value
- $4.81B
- +$1.55B (+47.4%) vs. Q4 2022
- New holders
- 71
- 91 more added
- Sold out
- 35
- 136 more reduced
2 institutions that held it in Q4 2022 haven't filed for Q1 2023 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2022: 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 2023
Shares, value and share of portfolio for each institution holding Rambus Inc; share changes are against Q4 2022.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Emerald Mutual Fund Advisers Trust | 36,386 | $1.87M | 0.11% | +36,386 | New |
| AQR Capital Management LLC | 36,435 | $1.87M | 0.00% | −5,912−14.0% | Reduced |
| China Universal Asset Management Co., Ltd. | 39,000 | $2.00M | 0.68% | −54,000−58.1% | Reduced |
| EAM Investors, LLC | 39,177 | $2.01M | 0.39% | −11,754−23.1% | Reduced |
| Teacher Retirement System of Texas | 39,638 | $2.03M | 0.01% | −3,918−9.0% | Reduced |
| Allspring Global Investments Holdings, LLC | 40,069 | $2.05M | 0.00% | +24,770+161.9% | Added |
| Virtus Investment Advisers, Inc. | 40,726 | $2.09M | 1.46% | −2,405−5.6% | Reduced |
| Boston Partners | 41,763 | $2.14M | 0.00% | −56,626−57.6% | Reduced |
| AE Wealth Management LLC | 41,769 | $2.14M | 0.01% | −4,981−10.7% | Reduced |
| Royal Bank of Canada | 42,104 | $2.16M | 0.00% | −50,241−54.4% | Reduced |
| Prudential Financial Inc | 105,673 | $2.18M | 0.00% | −3,233−3.0% | Reduced |
| HRT Financial LP | 42,737 | $2.19M | 0.03% | −17,389−28.9% | Reduced |
| Value Aligned Research Advisors, LLC | 42,790 | $2.19M | 0.78% | 00.0% | Unchanged |
| Maryland State Retirement & Pension System | 43,284 | $2.22M | 0.05% | −960−2.2% | Reduced |
| Envestnet Asset Management Inc | 164,950 | $2.22M | 0.00% | +117,742+249.4% | Added |
| Manufacturers Life Insurance Company, The | 43,629 | $2.24M | 0.00% | +660+1.5% | Added |
| Jump Financial, LLC | 44,784 | $2.30M | 0.09% | +44,784 | New |
| Amalgamated Bank | 48,508 | $2.49M | 0.02% | −3,337−6.4% | Reduced |
| Janus Henderson Group PLC | 48,692 | $2.50M | 0.00% | +26,480+119.2% | Added |
| Vident Investment Advisory, LLC | 49,676 | $2.55M | 0.08% | +49,676 | New |
| Louisiana State Employees Retirement System | 50,100 | $2.57M | 0.06% | −900−1.8% | Reduced |
| Emerald Advisers, LLC | 51,463 | $2.64M | 0.13% | +51,463 | New |
| Concentric Capital Strategies, LP | 52,372 | $2.68M | 0.90% | +52,372 | New |
| Cambiar Investors LLC | 54,469 | $2.79M | 0.12% | −18,584−25.4% | Reduced |
| Squarepoint Ops LLC | 54,751 | $2.81M | 0.02% | +13,836+33.8% | Added |
| State of New Jersey Common Pension Fund D | 55,729 | $2.86M | 0.01% | −5,975−9.7% | Reduced |
| Price T Rowe Associates Inc | 55,752 | $2.86M | 0.00% | +1,660+3.1% | Added |
| MetLife Investment Management | 56,019 | $2.87M | 0.02% | 00.0% | Unchanged |
| Tudor Investment Corp Et Al | 58,387 | $2.99M | 0.06% | +58,387 | New |
| American International Group, Inc. | 58,394 | $2.99M | 0.02% | +255+0.4% | Added |
| Teachers Retirement System of the State of Kentucky | 61,351 | $3.14M | 0.03% | +27,042+78.8% | Added |
| Jane Street Group, LLC | 61,676 | $3.16M | 0.01% | −31,610−33.9% | Reduced |
| Susquehanna International Group, LLP | 61,678 | $3.16M | 0.00% | −28,539−31.6% | Reduced |
| Twin Tree Management, LP | 62,034 | $3.18M | 0.09% | +62,034 | New |
| New York State Teachers Retirement System | 62,313 | $3.19M | 0.01% | −1,942−3.0% | Reduced |
| Yousif Capital Management, LLC | 62,936 | $3.23M | 0.04% | −8,020−11.3% | Reduced |
| Empowered Funds, LLC | 63,409 | $3.25M | 0.19% | +63,409 | New |
| Voya Investment Management LLC | 63,754 | $3.27M | 0.00% | +14,461+29.3% | Added |
| Advisor Group Holdings, Inc. | 64,878 | $3.33M | 0.01% | +50,620+355.0% | Added |
| Castleark Management LLC | 66,270 | $3.40M | 0.17% | +66,270 | New |
| Winton Group Ltd | 70,722 | $3.63M | 0.22% | −16,476−18.9% | Reduced |
| Public Employees Retirement System of Ohio | 72,162 | $3.70M | 0.02% | −23,299−24.4% | Reduced |
| Citigroup Inc | 73,264 | $3.76M | 0.01% | −15,323−17.3% | Reduced |
| State of Alaska, Department of Revenue | 73,618 | $3.77M | 0.04% | −1,226−1.6% | Reduced |
| Investors Towarzystwo Funduszy Inwestycyjnych Spolka Akcyjna | 82,400 | $4.16M | 2.42% | +29,400+55.5% | Added |
| Deutsche Bank AG | 83,107 | $4.26M | 0.00% | +10,767+14.9% | Added |
| State of Tennessee, Treasury Department | 85,083 | $4.36M | 0.02% | −24,586−22.4% | Reduced |
| Two Sigma Advisers, LP | 87,785 | $4.50M | 0.01% | −112,700−56.2% | Reduced |
| Schroder Investment Management Group | 87,925 | $4.51M | 0.01% | −12,466−12.4% | Reduced |
| LPL Financial LLC | 90,770 | $4.65M | 0.00% | −25,115−21.7% | Reduced |
| Barclays PLC | 91,095 | $4.67M | 0.00% | +10,122+12.5% | Added |
| Bridgeway Capital Management, LLC | 92,200 | $4.73M | 0.13% | +92,200 | New |
| Stifel Financial Corp | 92,323 | $4.73M | 0.01% | −1,146−1.2% | Reduced |
| Jackson Square Partners, LLC | 93,078 | $4.77M | 0.13% | 00.0% | Unchanged |
| Texas Permanent School Fund | 96,390 | $4.94M | 0.05% | +24,131+33.4% | Added |
| Great West Life Assurance Co | 102,248 | $5.24M | 0.01% | −40,882−28.6% | Reduced |
| State of Wisconsin Investment Board | 108,613 | $5.57M | 0.02% | −3,265−2.9% | Reduced |
| Los Angeles Capital Management LLC | 108,811 | $5.58M | 0.02% | −14,311−11.6% | Reduced |
| Walleye Trading LLC | 109,895 | $5.63M | 0.20% | +109,895 | New |
| UBS Group AG | 110,454 | $5.66M | 0.00% | +24,494+28.5% | Added |
| Wells Fargo & Company | 111,146 | $5.70M | 0.00% | +14,502+15.0% | Added |
| California Public Employees Retirement System | 113,749 | $5.83M | 0.01% | +113,749 | New |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 113,805 | $5.83M | 0.05% | −1,225−1.1% | Reduced |
| EAM Global Investors LLC | 116,615 | $5.98M | 1.68% | +64,401+123.3% | Added |
| First Trust Advisors LP | 117,282 | $6.01M | 0.01% | −10,764−8.4% | Reduced |
| BNP Paribas Arbitrage, SA | 118,278 | $6.06M | 0.01% | +26,938+29.5% | Added |
| Hillsdale Investment Management Inc. | 126,100 | $6.46M | 0.55% | −4,300−3.3% | Reduced |
| California State Teachers Retirement System | 134,194 | $6.88M | 0.01% | −4,647−3.3% | Reduced |
| UBS Asset Management Americas Inc | 134,395 | $6.89M | 0.00% | +4,424+3.4% | Added |
| Alliancebernstein L.P. | 146,932 | $7.53M | 0.00% | −20,348−12.2% | Reduced |
| Cinctive Capital Management LP | 149,230 | $7.65M | 0.28% | +149,230 | New |
| Rice Hall James & Associates, LLC | 149,236 | $7.65M | 0.43% | −3,042−2.0% | Reduced |
| SEI Investments Co | 167,936 | $8.61M | 0.02% | −50,580−23.1% | Reduced |
| Eagle Asset Management Inc | 181,689 | $9.31M | 0.05% | −9,620−5.0% | Reduced |
| HighTower Advisors, LLC | 181,864 | $9.32M | 0.02% | −270.0% | Reduced |
| Public Sector Pension Investment Board | 189,036 | $9.69M | 0.07% | −6,504−3.3% | Reduced |
| Mesirow Institutional Investment Management, Inc. | 197,731 | $10.1M | 1.10% | −15,565−7.3% | Reduced |
| Royce & Associates LP | 201,652 | $10.3M | 0.10% | −20,638−9.3% | Reduced |
| Jacobs Levy Equity Management, Inc | 203,026 | $10.4M | 0.06% | +86,222+73.8% | Added |
| Credit Suisse AG | 208,955 | $10.7M | 0.01% | +49,280+30.9% | Added |
| Voloridge Investment Management, LLC | 216,563 | $11.1M | 0.06% | +158,040+270.0% | Added |
| Glenmede Trust Co NA | 217,998 | $11.2M | 0.06% | −278,243−56.1% | Reduced |
| Putnam Investments LLC | 220,445 | $11.3M | 0.02% | +154,279+233.2% | Added |
| Thrivent Financial for Lutherans | 230,218 | $11.8M | 0.03% | −6,101−2.6% | Reduced |
| Swiss National Bank | 232,000 | $11.9M | 0.01% | −34,900−13.1% | Reduced |
| Natixis Advisors, L.P. | 232,360 | $11.9M | 0.04% | −66,720−22.3% | Reduced |
| Primecap Management Co | 238,663 | $12.2M | 0.01% | 00.0% | Unchanged |
| Bank of America Corp | 243,392 | $12.5M | 0.00% | −78,152−24.3% | Reduced |
| Crestline Management, LP | 245,152 | $12.6M | 1.54% | +96,072+64.4% | Added |
| Renaissance Technologies LLC | 257,986 | $13.2M | 0.02% | +206,486+400.9% | Added |
| Penn Capital Management Co Inc | 259,806 | $13.3M | 1.34% | −56,383−17.8% | Reduced |
| Summit Partners Public Asset Management, LLC | 261,818 | $13.4M | 0.75% | +261,818 | New |
| Mirae Asset Global Investments Co., Ltd. | 265,346 | $13.6M | 0.03% | +2,730+1.0% | Added |
| AXA S.A. | 266,958 | $13.7M | 0.05% | +9,689+3.8% | Added |
| CloudAlpha Capital Management Limited/Hong Kong | 272,700 | $14.0M | 2.52% | +272,700 | New |
| Russell Investments Group, Ltd. | 273,584 | $14.0M | 0.03% | −268,815−49.6% | Reduced |
| New York State Common Retirement Fund | 282,485 | $14.5M | 0.02% | −17,185−5.7% | Reduced |
| Swedbank AB | 300,000 | $15.4M | 0.03% | +300,000 | New |
| Legal & General Group Plc | 314,421 | $16.1M | 0.01% | +615+0.2% | Added |
| Rhumbline Advisers | 316,089 | $16.2M | 0.02% | +11,587+3.8% | Added |