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, Q4 2024
Institutional positions in Rambus Inc as of Dec 31, 2024. 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
- 395
- +27 vs. Q3 2024
- Shares held
- 95.1M
- +3.12M (+3.4%) vs. Q3 2024
- Total value
- $5.03B
- +$1.14B (+29.4%) vs. Q3 2024
- New holders
- 78
- 121 more added
- Sold out
- 51
- 153 more reduced
8 institutions that held it in Q3 2024 haven't filed for Q4 2024 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 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, Q4 2024
Shares, value and share of portfolio for each institution holding Rambus Inc; share changes are against Q3 2024.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Primecap Management Co | 82,500 | $4.36M | 0.00% | −12,000−12.7% | Reduced |
| FMR LLC | 79,482 | $4.20M | 0.00% | +16,752+26.7% | Added |
| Russell Investments Group, Ltd. | 79,173 | $4.19M | 0.01% | −59,542−42.9% | Reduced |
| Public Sector Pension Investment Board | 78,600 | $4.15M | 0.02% | +78,600 | New |
| Renaissance Group LLC | 75,889 | $4.01M | 0.17% | +16,591+28.0% | Added |
| Envestnet Asset Management Inc | 73,938 | $3.91M | 0.00% | +34,193+86.0% | Added |
| Vident Advisory, LLC | 73,714 | $3.90M | 0.07% | +7,686+11.6% | Added |
| Healthcare of Ontario Pension Plan Trust Fund | 73,200 | $3.87M | 0.01% | −110,900−60.2% | Reduced |
| Lazard Asset Management LLC | 69,169 | $3.65M | 0.01% | +36,582+112.3% | Added |
| Rice Hall James & Associates, LLC | 68,874 | $3.64M | 0.20% | +631+0.9% | Added |
| Investors Towarzystwo Funduszy Inwestycyjnych Spolka Akcyjna | 64,000 | $3.43M | 1.36% | −4,400−6.4% | Reduced |
| LPL Financial LLC | 63,364 | $3.35M | 0.00% | +9,183+16.9% | Added |
| Fred Alger Management, LLC | 62,508 | $3.30M | 0.02% | +35,233+129.2% | Added |
| New York State Teachers Retirement System | 62,357 | $3.30M | 0.01% | −17,893−22.3% | Reduced |
| Teachers Retirement System of the State of Kentucky | 62,272 | $3.29M | 0.03% | −1,650−2.6% | Reduced |
| Intech Investment Management LLC | 57,796 | $3.06M | 0.03% | −33,363−36.6% | Reduced |
| BNP Paribas Arbitrage, SA | 57,221 | $3.02M | 0.00% | −77,679−57.6% | Reduced |
| Captrust Financial Advisors | 55,227 | $2.92M | 0.01% | −45,939−45.4% | Reduced |
| Creative Planning | 51,099 | $2.70M | 0.00% | +13,832+37.1% | Added |
| ProShare Advisors LLC | 49,027 | $2.59M | 0.01% | +9,546+24.2% | Added |
| Amalgamated Bank | 48,847 | $2.58M | 0.02% | +426+0.9% | Added |
| Alberta Investment Management Corp | 47,140 | $2.49M | 0.02% | 00.0% | Unchanged |
| B. Metzler seel. Sohn & Co. AG | 46,479 | $2.46M | 0.03% | +4,332+10.3% | Added |
| TownSquare Capital, LLC | 46,390 | $2.45M | 0.03% | +46,390 | New |
| Moody Aldrich Partners LLC | 45,712 | $2.42M | 0.45% | −1,347−2.9% | Reduced |
| Susquehanna International Group, LLP | 45,673 | $2.41M | 0.00% | −120,726−72.6% | Reduced |
| Hillsdale Investment Management Inc. | 45,400 | $2.40M | 0.12% | +200+0.4% | Added |
| Centiva Capital, LP | 44,098 | $2.33M | 0.09% | −39,817−47.4% | Reduced |
| State of Tennessee, Treasury Department | 44,078 | $2.33M | 0.01% | −15,243−25.7% | Reduced |
| Zacks Investment Management | 42,948 | $2.27M | 0.02% | +3,678+9.4% | Added |
| Pinebridge Investments, L.P. | 42,808 | $2.26M | 0.02% | +12,807+42.7% | Added |
| Aspetuck Financial Management LLC | 42,275 | $2.23M | 1.74% | +42,275 | New |
| State of New Jersey Common Pension Fund D | 40,145 | $2.12M | 0.01% | −4,062−9.2% | Reduced |
| Victory Capital Management Inc | 39,257 | $2.08M | 0.00% | −482−1.2% | Reduced |
| Campbell Newman Asset Management Inc | 39,046 | $2.06M | 0.17% | +16,376+72.2% | Added |
| Engineers Gate Manager LP | 38,194 | $2.02M | 0.04% | −164,036−81.1% | Reduced |
| Ensign Peak Advisors, Inc | 37,476 | $1.98M | 0.00% | 00.0% | Unchanged |
| Yousif Capital Management, LLC | 37,454 | $1.98M | 0.02% | −2,146−5.4% | Reduced |
| Great Lakes Advisors, LLC | 35,955 | $1.90M | 0.02% | −8,633−19.4% | Reduced |
| Danske Bank A/S | 35,770 | $1.89M | 0.01% | +25,365+243.8% | Added |
| Tudor Investment Corp Et Al | 35,256 | $1.86M | 0.02% | −81,890−69.9% | Reduced |
| Cambiar Investors LLC | 34,526 | $1.83M | 0.07% | −2,960−7.9% | Reduced |
| Cubist Systematic Strategies, LLC | 32,753 | $1.73M | 0.03% | −781,808−96.0% | Reduced |
| Ameritas Investment Partners, Inc. | 32,526 | $1.72M | 0.06% | −594−1.8% | Reduced |
| Handelsbanken Fonder AB | 32,197 | $1.70M | 0.01% | −200−0.6% | Reduced |
| Y-Intercept (Hong Kong) Ltd | 32,192 | $1.70M | 0.11% | −5,803−15.3% | Reduced |
| Public Employees Retirement System of Ohio | 31,786 | $1.68M | 0.01% | −140,748−81.6% | Reduced |
| Jackson Square Partners, LLC | 31,318 | $1.66M | 0.18% | −34,949−52.7% | Reduced |
| Bailard, Inc. | 31,291 | $1.65M | 0.04% | −1,958−5.9% | Reduced |
| Arizona State Retirement System | 31,237 | $1.65M | 0.01% | +202+0.7% | Added |
| Point72 Asia (Singapore) Pte. Ltd. | 31,156 | $1.65M | 0.43% | −31,443−50.2% | Reduced |
| State Board of Administration of Florida Retirement System | 31,123 | $1.65M | 0.00% | 00.0% | Unchanged |
| Man Group plc | 30,707 | $1.62M | 0.00% | −14,600−32.2% | Reduced |
| HRT Financial LP | 30,607 | $1.62M | 0.01% | −399,584−92.9% | Reduced |
| Diversified Trust Co | 30,041 | $1.59M | 0.04% | +2,992+11.1% | Added |
| Louisiana State Employees Retirement System | 29,600 | $1.56M | 0.03% | −200−0.7% | Reduced |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 29,129 | $1.54M | 0.00% | +4,224+17.0% | Added |
| Inceptionr LLC | 28,362 | $1.50M | 0.33% | +28,362 | New |
| South Dakota Investment Council | 27,613 | $1.46M | 0.03% | +27,613 | New |
| Headlands Technologies LLC | 27,316 | $1.44M | 0.15% | −22,236−44.9% | Reduced |
| STRS Ohio | 27,300 | $1.44M | 0.01% | −5,300−16.3% | Reduced |
| Pacer Advisors, Inc. | 26,811 | $1.42M | 0.00% | −14,054−34.4% | Reduced |
| Linden Thomas Advisory Services, LLC | 26,398 | $1.40M | 0.18% | −100−0.4% | Reduced |
| Verition Fund Management LLC | 26,178 | $1.38M | 0.01% | −4,710−15.2% | Reduced |
| Teacher Retirement System of Texas | 25,957 | $1.37M | 0.00% | −10,242−28.3% | Reduced |
| Campbell & CO Investment Adviser LLC | 25,871 | $1.37M | 0.11% | +25,871 | New |
| Meritage Portfolio Management | 25,204 | $1.33M | 0.08% | +11,531+84.3% | Added |
| State of Michigan Retirement System | 25,200 | $1.33M | 0.01% | −400−1.6% | Reduced |
| Thrivent Financial for Lutherans | 25,076 | $1.33M | 0.00% | −222−0.9% | Reduced |
| Natixis | 24,500 | $1.30M | 0.01% | +2,600+11.9% | Added |
| Cetera Investment Advisers | 24,486 | $1.29M | 0.00% | +757+3.2% | Added |
| Northwestern Mutual Investment Management Company, LLC | 23,686 | $1.25M | 0.03% | −204−0.9% | Reduced |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 23,537 | $1.24M | 0.01% | −199−0.8% | Reduced |
| Police & Firemen's Retirement System of New Jersey | 22,663 | $1.20M | 0.01% | +22,663 | New |
| KLP Kapitalforvaltning AS | 22,300 | $1.18M | 0.01% | +22,300 | New |
| New Mexico Educational Retirement Board | 22,100 | $1.17M | 0.04% | 00.0% | Unchanged |
| Amundi | 20,373 | $1.16M | 0.00% | +20,373 | New |
| Oregon Public Employees Retirement Fund | 21,700 | $1.15M | 0.02% | −200−0.9% | Reduced |
| Marshall Wace, LLP | 20,455 | $1.08M | 0.00% | −165,103−89.0% | Reduced |
| Fieldview Capital Management, LLC | 20,103 | $1.06M | 0.16% | +20,103 | New |
| Truvestments Capital LLC | 19,829 | $1.05M | 0.27% | +4,102+26.1% | Added |
| Guggenheim Capital LLC | 19,737 | $1.04M | 0.01% | −21,239−51.8% | Reduced |
| Los Angeles Capital Management LLC | 19,599 | $1.04M | 0.00% | 00.0% | Unchanged |
| HSBC Holdings PLC | 19,324 | $1.02M | 0.00% | −91,957−82.6% | Reduced |
| JustInvest LLC | 19,035 | $1.01M | 0.02% | +4,088+27.3% | Added |
| PEAK6 LLC | 18,559 | $981.0K | 0.04% | +18,559 | New |
| Pictet Asset Management Holding SA | 18,383 | $971.7K | 0.00% | +877+5.0% | Added |
| Yorktown Management & Research Co Inc | 17,800 | $940.9K | 0.90% | 00.0% | Unchanged |
| Allianz Asset Management GmbH | 17,410 | $920.3K | 0.00% | −53,647−75.5% | Reduced |
| Empowered Funds, LLC | 16,967 | $896.9K | 0.01% | +10,450+160.3% | Added |
| Toroso Investments, LLC | 16,712 | $883.4K | 0.01% | −399−2.3% | Reduced |
| AXA S.A. | 16,407 | $867.3K | 0.00% | −890−5.1% | Reduced |
| The PNC Financial Services Group, Inc. | 16,284 | $860.8K | 0.00% | +6,781+71.4% | Added |
| Pathstone Holdings, LLC | 15,688 | $829.3K | 0.00% | −723−4.4% | Reduced |
| Dynamic Technology Lab Private Ltd | 15,520 | $820.0K | 0.13% | −33,676−68.5% | Reduced |
| Bank of Montreal | 15,480 | $818.3K | 0.00% | −45−0.3% | Reduced |
| BNP Paribas | 15,124 | $809.6K | 0.03% | 00.0% | Unchanged |
| Xponance, Inc. | 15,223 | $804.7K | 0.01% | +526+3.6% | Added |
| Nebula Research & Development LLC | 15,187 | $802.8K | 0.09% | −15,221−50.1% | Reduced |
| Fox Run Management, L.L.C. | 14,392 | $760.8K | 0.14% | −10,100−41.2% | Reduced |