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, Q3 2021
Institutional positions in Rambus Inc as of Sep 30, 2021. 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
- 236
- +20 vs. Q2 2021
- Shares held
- 93.4M
- −3.16M (−3.3%) vs. Q2 2021
- Total value
- $2.07B
- −$216.2M (−9.4%) vs. Q2 2021
- New holders
- 35
- 65 more added
- Sold out
- 15
- 83 more reduced
3 institutions that held it in Q2 2021 haven't filed for Q3 2021 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q2 2021: 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, Q3 2021
Shares, value and share of portfolio for each institution holding Rambus Inc; share changes are against Q2 2021.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Shelter Haven Capital Management, L.P. | 50,000 | $1.11M | 0.35% | −549,302−91.7% | Reduced |
| AQR Capital Management LLC | 48,141 | $1.07M | 0.00% | −23,763−33.0% | Reduced |
| Gyon Technologies Capital Management, LP | 46,114 | $1.02M | 0.28% | +29,836+183.3% | Added |
| Martingale Asset Management L P | 45,873 | $1.02M | 0.01% | +24,999+119.8% | Added |
| Oregon Public Employees Retirement Fund | 45,362 | $1.01M | 0.01% | −200−0.4% | Reduced |
| Maryland State Retirement & Pension System | 42,848 | $960.0K | 0.03% | +42,848 | New |
| Jane Street Group, LLC | 40,805 | $906.0K | 0.00% | −5,152−11.2% | Reduced |
| Robeco Institutional Asset Management B.V. | 38,401 | $852.0K | 0.00% | +23,796+162.9% | Added |
| EAM Global Investors LLC | 38,111 | $846.0K | 0.20% | −63,023−62.3% | Reduced |
| MetLife Investment Management | 37,951 | $842.5K | 0.01% | 00.0% | Unchanged |
| Bank of Montreal | 35,784 | $809.0K | 0.00% | −2,165−5.7% | Reduced |
| Price T Rowe Associates Inc | 35,092 | $779.0K | 0.00% | +7,117+25.4% | Added |
| Boston Partners | 34,644 | $769.0K | 0.00% | −3,995−10.3% | Reduced |
| ETF Managers Group, LLC | 33,476 | $746.0K | 0.01% | +2,570+8.3% | Added |
| Marshall Wace, LLP | 32,482 | $721.0K | 0.00% | +32,482 | New |
| Teachers Retirement System of the State of Kentucky | 32,312 | $717.0K | 0.01% | 00.0% | Unchanged |
| Ergoteles LLC | 31,500 | $699.0K | 0.03% | +31,500 | New |
| Boothbay Fund Management, LLC | 31,297 | $695.0K | 0.03% | +5,607+21.8% | Added |
| Jacobs Levy Equity Management, Inc | 31,200 | $693.0K | 0.00% | +31,200 | New |
| Gotham Asset Management, LLC | 30,720 | $682.0K | 0.03% | +11,174+57.2% | Added |
| Arizona State Retirement System | 30,646 | $680.0K | 0.01% | −321−1.0% | Reduced |
| Metropolitan Life Insurance Co | 28,431 | $631.2K | 0.01% | −3,001−9.5% | Reduced |
| Handelsbanken Fonder AB | 26,297 | $584.0K | 0.00% | 00.0% | Unchanged |
| Tudor Investment Corp Et Al | 25,359 | $563.0K | 0.01% | +25,359 | New |
| IndexIQ Advisors LLC | 23,128 | $513.0K | 0.02% | +2,317+11.1% | Added |
| AMP Capital Investors Ltd | 20,800 | $462.0K | 0.00% | +20,800 | New |
| Jaffetilchin Investment Partners, LLC | 20,443 | $454.0K | 0.05% | +20,443 | New |
| Schonfeld Strategic Advisors LLC | 19,700 | $437.0K | 0.00% | −547,086−96.5% | Reduced |
| Yorktown Management & Research Co Inc | 19,600 | $435.0K | 0.33% | 00.0% | Unchanged |
| Public Employees Retirement Association of Colorado | 19,581 | $435.0K | 0.00% | 00.0% | Unchanged |
| Quantinno Capital Management LP | 19,148 | $425.0K | 0.47% | 00.0% | Unchanged |
| Teacher Retirement System of Texas | 18,360 | $408.0K | 0.00% | +3,500+23.6% | Added |
| Wolverine Trading, LLC | 17,385 | $388.0K | 0.01% | +232+1.4% | Added |
| Natixis Advisors, L.P. | 17,155 | $381.0K | 0.00% | +568+3.4% | Added |
| Capital Fund Management S.A. | 17,039 | $378.3K | 0.01% | +1,853+12.2% | Added |
| Aigen Investment Management, LP | 17,041 | $378.0K | 0.07% | +17,041 | New |
| PDT Partners, LLC | 16,861 | $374.0K | 0.03% | +16,861 | New |
| ProShare Advisors LLC | 16,712 | $371.0K | 0.00% | −15,425−48.0% | Reduced |
| Envestnet Asset Management Inc | 16,328 | $362.0K | 0.00% | +1,514+10.2% | Added |
| Parallel Advisors, LLC | 15,903 | $353.0K | 0.01% | +9+0.1% | Added |
| Squarepoint Ops LLC | 15,675 | $348.0K | 0.00% | +1,015+6.9% | Added |
| Marshall Wace North America L.P. | 15,648 | $347.0K | 0.00% | +15,648 | New |
| BNC Wealth Management, LLC | 15,505 | $344.0K | 0.20% | 00.0% | Unchanged |
| Mutual of America Capital Management LLC | 14,522 | $322.0K | 0.00% | −1,473−9.2% | Reduced |
| HSBC Holdings PLC | 14,376 | $321.0K | 0.00% | −1,969−12.0% | Reduced |
| Juncture Wealth Strategies, LLC | 14,033 | $312.0K | 0.16% | +14,033 | New |
| Royce & Associates LP | 13,988 | $311.0K | 0.00% | −22,993−62.2% | Reduced |
| Sawtooth Solutions, LLC | 13,972 | $310.0K | 0.05% | −1,251−8.2% | Reduced |
| Everence Capital Management Inc | 13,445 | $298.0K | 0.02% | 00.0% | Unchanged |
| HAP Trading, LLC | 12,934 | $287.0K | 0.02% | +12,934 | New |
| Dynamic Technology Lab Private Ltd | 12,281 | $273.0K | 0.03% | +12,281 | New |
| Man Group plc | 11,932 | $265.0K | 0.00% | +11,932 | New |
| Cetera Advisor Networks LLC | 11,800 | $262.0K | 0.00% | +312+2.7% | Added |
| Janus Henderson Group PLC | 11,494 | $255.0K | 0.00% | +11,494 | New |
| Crossmark Global Holdings, Inc. | 11,280 | $250.0K | 0.01% | −190−1.7% | Reduced |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 11,223 | $249.0K | 0.00% | 00.0% | Unchanged |
| Profund Advisors LLC | 11,183 | $248.0K | 0.01% | −2,851−20.3% | Reduced |
| Eqis Capital Management, Inc. | 11,077 | $246.0K | 0.02% | −867−7.3% | Reduced |
| Trexquant Investment LP | 10,807 | $240.0K | 0.02% | +10,807 | New |
| Virginia Retirement Systems Et Al | 10,700 | $238.0K | 0.00% | −21,500−66.8% | Reduced |
| CIBC Asset Management Inc | 10,086 | $224.0K | 0.00% | +365+3.8% | Added |
| Advisor Group Holdings, Inc. | 10,075 | $224.0K | 0.00% | +332+3.4% | Added |
| Rockland Trust Co | 9,992 | $222.0K | 0.02% | 00.0% | Unchanged |
| Shay Capital LLC | 10,000 | $222.0K | 0.07% | +10,000 | New |
| Cornerstone Investment Partners, LLC | 9,605 | $213.0K | 0.01% | −2,300−19.3% | Reduced |
| Sciencast Management LP | 9,649 | $212.0K | 0.06% | +9,649 | New |
| Miracle Mile Advisors, LLC | 9,301 | $206.0K | 0.01% | 00.0% | Unchanged |
| Cambridge Investment Research Advisors, Inc. | 9,170 | $204.0K | 0.00% | −930−9.2% | Reduced |
| Contravisory Investment Management, Inc. | 8,959 | $199.0K | 0.06% | 00.0% | Unchanged |
| US Bancorp | 8,843 | $197.0K | 0.00% | +8,690+5,679.7% | Added |
| Ameritas Investment Partners, Inc. | 8,317 | $185.0K | 0.01% | −471−5.4% | Reduced |
| Tower Research Capital LLC (TRC) | 8,186 | $182.0K | 0.00% | +4,652+131.6% | Added |
| Harbour Investments, Inc. | 8,156 | $181.0K | 0.01% | +38+0.5% | Added |
| The PNC Financial Services Group, Inc. | 5,595 | $125.0K | 0.00% | +64+1.2% | Added |
| Wolverine Asset Management LLC | 5,163 | $114.0K | 0.00% | +5,163 | New |
| Nisa Investment Advisors, LLC | 4,460 | $99.0K | 0.00% | 00.0% | Unchanged |
| KBC Group NV | 3,955 | $88.0K | 0.00% | 00.0% | Unchanged |
| State of Wyoming | 3,946 | $88.0K | 0.06% | +3,946 | New |
| Bollard Group LLC | 3,760 | $83.0K | 0.00% | 00.0% | Unchanged |
| HHM Wealth Advisors, LLC | 3,500 | $78.0K | 0.02% | 00.0% | Unchanged |
| Macquarie Group Ltd | 3,025 | $67.0K | 0.00% | 00.0% | Unchanged |
| Bell Investment Advisors, Inc | 2,934 | $65.0K | 0.02% | +2,934 | New |
| Sutton Wealth Advisors Inc. | 2,811 | $62.4K | 0.02% | 00.0% | Unchanged |
| UBS Group AG | 2,836 | $62.0K | 0.00% | +1,463+106.6% | Added |
| IFP Advisors, Inc | 2,347 | $52.0K | 0.00% | 00.0% | Unchanged |
| Quantbot Technologies LP | 2,275 | $50.0K | 0.00% | −13,054−85.2% | Reduced |
| Arkadios Wealth Advisors | 2,000 | $44.0K | 0.01% | −2,545−56.0% | Reduced |
| Vestcor Inc | 1,889 | $42.0K | 0.00% | 00.0% | Unchanged |
| Northwestern Mutual Wealth Management Co | 1,867 | $41.0K | 0.00% | 00.0% | Unchanged |
| Fieldpoint Private Securities, LLC | 1,710 | $38.0K | 0.01% | 00.0% | Unchanged |
| Versant Capital Management, Inc | 1,642 | $36.0K | 0.01% | −96−5.5% | Reduced |
| Newbridge Financial Services Group, Inc. | 1,300 | $29.0K | 0.02% | 00.0% | Unchanged |
| Harvest Fund Management Co., Ltd | 1,257 | $27.0K | 0.01% | +680+117.9% | Added |
| Dark Forest Capital Management LP | 1,226 | $27.0K | 0.01% | +1,226 | New |
| Koshinski Asset Management, Inc. | 1,140 | $25.3K | 0.00% | +1,140 | New |
| Clearstead Advisors, LLC | 1,015 | $23.0K | 0.00% | 00.0% | Unchanged |
| Sonora Investment Management, LLC | 1,000 | $22.0K | 0.00% | 00.0% | Unchanged |
| Benjamin F. Edwards & Company, Inc. | 1,000 | $22.0K | 0.00% | 00.0% | Unchanged |
| Rockefeller Capital Management L.P. | 991 | $22.0K | 0.00% | 00.0% | Unchanged |
| Baillie Gifford & Co | 699 | $16.0K | 0.00% | 00.0% | Unchanged |