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, 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 | 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, 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 |
|---|---|---|---|---|---|
| Penn Capital Management Co Inc | 325,605 | $7.23M | 0.73% | −41,972−11.4% | Reduced |
| New York State Common Retirement Fund | 362,704 | $8.05M | 0.01% | −48,794−11.9% | Reduced |
| Assenagon Asset Management S.A. | 380,125 | $8.44M | 0.03% | −3,363−0.9% | Reduced |
| Barclays PLC | 390,310 | $8.66M | 0.01% | +95,761+32.5% | Added |
| MESIROW FINANCIAL INVESTMENT MANAGEMENT - Equity & Fixed Income | 487,186 | $10.8M | 1.25% | −50,050−9.3% | Reduced |
| Credit Suisse AG | 511,142 | $11.3M | 0.01% | +33,248+7.0% | Added |
| Epoch Investment Partners, Inc. | 519,361 | $11.5M | 0.06% | +183,590+54.7% | Added |
| Barington Capital Group, L.P. | 530,100 | $11.8M | 12.23% | 00.0% | Unchanged |
| Morgan Stanley | 569,975 | $12.7M | 0.00% | +91,346+19.1% | Added |
| Russell Investments Group, Ltd. | 627,397 | $13.9M | 0.02% | +77,182+14.0% | Added |
| Two Sigma Advisers, LP | 672,685 | $14.9M | 0.04% | −56,100−7.7% | Reduced |
| Glenmede Trust Co NA | 706,370 | $15.7M | 0.08% | +462,076+189.1% | Added |
| Heard Capital LLC | 716,340 | $15.9M | 3.09% | +6,690+0.9% | Added |
| Shannon River Fund Management LLC | 737,973 | $16.4M | 1.44% | 00.0% | Unchanged |
| JPMorgan Chase & Co | 746,563 | $16.6M | 0.00% | −149,603−16.7% | Reduced |
| Principal Financial Group Inc | 751,841 | $16.7M | 0.01% | −39,071−4.9% | Reduced |
| Charles Schwab Investment Management Inc | 755,376 | $16.8M | 0.01% | −24,633−3.2% | Reduced |
| Lord, Abbett & Co. LLC | 766,657 | $17.0M | 0.04% | −9,907−1.3% | Reduced |
| Millennium Management LLC | 860,483 | $19.1M | 0.03% | +557,270+183.8% | Added |
| Invesco Ltd. | 863,329 | $19.2M | 0.00% | −124,749−12.6% | Reduced |
| Bank of New York Mellon Corp | 1,008,680 | $22.4M | 0.00% | −78,877−7.3% | Reduced |
| Norges Bank | 1,062,993 | $23.6M | 0.01% | −221,703−17.3% | Reduced |
| D. E. Shaw & Co., Inc. | 1,496,189 | $33.2M | 0.04% | +117,565+8.5% | Added |
| Nuveen Asset Management, LLC | 1,642,837 | $36.5M | 0.01% | −465,668−22.1% | Reduced |
| Northern Trust Corp | 1,671,894 | $37.1M | 0.01% | −42,017−2.5% | Reduced |
| Geode Capital Management, LLC | 1,854,368 | $41.2M | 0.01% | −109,671−5.6% | Reduced |
| Wellington Management Group LLP | 2,394,191 | $53.2M | 0.01% | −44,608−1.8% | Reduced |
| Silvercrest Asset Management Group LLC | 2,455,489 | $54.5M | 0.37% | +2,783+0.1% | Added |
| Loomis Sayles & Co L P | 3,042,961 | $67.6M | 0.08% | −40,879−1.3% | Reduced |
| Dimensional Fund Advisors LP | 3,656,079 | $81.2M | 0.03% | −129,062−3.4% | Reduced |
| Neuberger Berman Group LLC | 4,120,310 | $90.5M | 0.08% | +62,747+1.5% | Added |
| State Street Corp | 4,730,414 | $105.0M | 0.01% | −39,213−0.8% | Reduced |
| Ameriprise Financial Inc | 5,319,167 | $118.1M | 0.04% | +135,571+2.6% | Added |
| Lynrock Lake LP | 7,666,666 | $170.2M | 10.50% | 00.0% | Unchanged |
| Vanguard Group Inc | 11,809,220 | $262.2M | 0.01% | −399,702−3.3% | Reduced |
| BlackRock Inc. | 16,541,408 | $367.2M | 0.01% | −1,395,102−7.8% | Reduced |
| NEXT Financial Group, Inc | 0 | $0 | 0.00% | −1,917−100.0% | Sold out |
| EAM Investors, LLC | 0 | $0 | 0.00% | −165,359−100.0% | Sold out |
| Susquehanna International Group, LLP | 0 | $0 | 0.00% | −155,868−100.0% | Sold out |
| Pacer Advisors, Inc. | 0 | $0 | 0.00% | −147,708−100.0% | Sold out |
| ExodusPoint Capital Management, LP | 0 | $0 | 0.00% | −133,773−100.0% | Sold out |
| Hodges Capital Management Inc. | 0 | $0 | 0.00% | −96,520−100.0% | Sold out |
| Winton Group Ltd | 0 | $0 | 0.00% | −30,677−100.0% | Sold out |
| CWM Advisors, LLC | 0 | $0 | 0.00% | −21,120−100.0% | Sold out |
| Raymond James & Associates | 0 | $0 | 0.00% | −20,927−100.0% | Sold out |
| Atom Investors LP | 0 | $0 | 0.00% | −16,962−100.0% | Sold out |
| Tatro Capital, LLC | 0 | $0 | 0.00% | −10,669−100.0% | Sold out |
| First Citizens Bank & Trust Co | 0 | $0 | 0.00% | −8,448−100.0% | Sold out |
| Panagora Asset Management Inc | 0 | $0 | 0.00% | −5,991−100.0% | Sold out |
| Pinz Capital Management, LP | 0 | $0 | 0.00% | −5,200−100.0% | Sold out |
| Advisory Services Network, LLC | 0 | $0 | 0.00% | −431−100.0% | Sold out |
| black-and-white Capital LP | – | – | – | – | Not filed |
| Wexford Capital LP | – | – | – | – | Not filed |
| CWM, LLC | – | – | – | – | Not filed |