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, 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 | 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, 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 |
|---|---|---|---|---|---|
| BlackRock, Inc. | 14,139,062 | $747.4M | 0.02% | +445,878+3.3% | Added |
| Vanguard Group Inc | 12,594,979 | $665.8M | 0.01% | +31,645+0.3% | Added |
| Price T Rowe Associates Inc | 5,449,128 | $288.0M | 0.03% | +4,445,146+442.8% | Added |
| Invesco Ltd. | 4,999,748 | $264.3M | 0.05% | +2,093,953+72.1% | Added |
| State Street Corp | 4,737,415 | $250.4M | 0.01% | −81,710−1.7% | Reduced |
| JPMorgan Chase & Co | 4,184,370 | $221.2M | 0.02% | +68,975+1.7% | Added |
| Geode Capital Management, LLC | 2,577,185 | $136.3M | 0.01% | −44,157−1.7% | Reduced |
| Bank of New York Mellon Corp | 2,095,974 | $110.8M | 0.02% | −67,225−3.1% | Reduced |
| Norges Bank | 1,785,242 | $94.4M | 0.01% | +498,710+38.8% | Added |
| Dimensional Fund Advisors LP | 1,734,188 | $91.7M | 0.02% | −27,060−1.5% | Reduced |
| Swedbank AB | 1,700,000 | $89.9M | 0.11% | −43,000−2.5% | Reduced |
| Neuberger Berman Group LLC | 1,658,364 | $87.7M | 0.07% | −88,899−5.1% | Reduced |
| Northern Trust Corp | 1,463,338 | $77.4M | 0.01% | +170,884+13.2% | Added |
| Westfield Capital Management Co LP | 1,389,538 | $73.5M | 0.32% | +487,302+54.0% | Added |
| Charles Schwab Investment Management Inc | 1,249,746 | $66.1M | 0.01% | +5,761+0.5% | Added |
| Wellington Management Group LLP | 1,248,445 | $66.0M | 0.01% | −210,286−14.4% | Reduced |
| American Century Companies Inc | 1,176,352 | $62.2M | 0.04% | +74,478+6.8% | Added |
| Westwood Holdings Group Inc. | 1,127,854 | $59.6M | 0.46% | −302,042−21.1% | Reduced |
| Voya Investment Management LLC | 1,124,441 | $59.4M | 0.06% | −69,421−5.8% | Reduced |
| Nuveen Asset Management, LLC | 1,064,700 | $56.3M | 0.02% | +116,079+12.2% | Added |
| Goldman Sachs Group Inc | 1,048,840 | $55.4M | 0.01% | +227,985+27.8% | Added |
| Raymond James Financial Inc | 974,284 | $51.5M | 0.02% | +974,284 | New |
| Morgan Stanley | 914,750 | $48.4M | 0.00% | −676,027−42.5% | Reduced |
| Congress Asset Management Co | 866,026 | $45.8M | 0.31% | +866,026 | New |
| Analog Century Management LP | 825,288 | $43.6M | 2.92% | +825,288 | New |
| Assenagon Asset Management S.A. | 760,214 | $40.2M | 0.07% | −506,566−40.0% | Reduced |
| Vaughan Nelson Investment Management, L.P. | 735,788 | $38.9M | 0.36% | −727,144−49.7% | Reduced |
| Millennium Management LLC | 595,055 | $31.5M | 0.03% | −341,541−36.5% | Reduced |
| SG Americas Securities, LLC | 552,173 | $29.2M | 0.13% | +520,754+1,657.4% | Added |
| Emerald Advisers, LLC | 543,829 | $28.7M | 1.11% | −17,585−3.1% | Reduced |
| Two Sigma Investments, LP | 529,974 | $28.0M | 0.06% | −293,915−35.7% | Reduced |
| Silvercrest Asset Management Group LLC | 516,133 | $27.3M | 0.18% | −23,251−4.3% | Reduced |
| Panagora Asset Management Inc | 437,679 | $23.1M | 0.11% | −1,608−0.4% | Reduced |
| Two Sigma Advisers, LP | 435,300 | $23.0M | 0.05% | −127,600−22.7% | Reduced |
| Bank of America Corp | 415,317 | $22.0M | 0.00% | −250,401−37.6% | Reduced |
| Crestline Management, LP | 410,113 | $21.7M | 0.75% | +151,782+58.8% | Added |
| Oberweis Asset Management Inc | 409,400 | $21.6M | 1.02% | +409,400 | New |
| Franklin Resources Inc | 406,263 | $21.5M | 0.01% | −6,823−1.7% | Reduced |
| D. E. Shaw & Co., Inc. | 394,352 | $20.8M | 0.02% | −406,347−50.7% | Reduced |
| WCM Investment Management, LLC | 386,527 | $20.7M | 0.05% | +34,124+9.7% | Added |
| Emerald Mutual Fund Advisers Trust | 356,958 | $18.9M | 1.15% | −64,959−15.4% | Reduced |
| Janus Henderson Group PLC | 343,180 | $18.1M | 0.01% | −8,621−2.5% | Reduced |
| Rhumbline Advisers | 331,966 | $17.5M | 0.02% | +2,762+0.8% | Added |
| Principal Financial Group Inc | 330,134 | $17.5M | 0.01% | +4,725+1.5% | Added |
| AQR Capital Management LLC | 319,731 | $16.9M | 0.02% | −42,521−11.7% | Reduced |
| Glenmede Trust Co NA | 309,742 | $16.4M | 0.08% | −2,168−0.7% | Reduced |
| SEI Investments Co | 306,072 | $16.2M | 0.02% | −37,032−10.8% | Reduced |
| Mesirow Institutional Investment Management, Inc. | 298,174 | $15.8M | 1.21% | −101,445−25.4% | Reduced |
| Algert Global LLC | 292,592 | $15.5M | 0.36% | +33,251+12.8% | Added |
| UBS Asset Management Americas Inc | 290,392 | $15.4M | 0.00% | +45,967+18.8% | Added |
| Prudential Financial Inc | 289,241 | $15.3M | 0.02% | +16,571+6.1% | Added |
| Barclays PLC | 263,453 | $13.9M | 0.01% | +47,194+21.8% | Added |
| Ameriprise Financial Inc | 249,130 | $13.2M | 0.00% | +20,682+9.1% | Added |
| Capital Fund Management S.A. | 246,993 | $13.1M | 0.13% | −75,358−23.4% | Reduced |
| Royal Bank of Canada | 243,876 | $12.9M | 0.00% | −65,665−21.2% | Reduced |
| Macquarie Group Ltd | 239,568 | $12.7M | 0.02% | −201,760−45.7% | Reduced |
| HighTower Advisors, LLC | 237,217 | $12.5M | 0.02% | +3,924+1.7% | Added |
| Canada Pension Plan Investment Board | 235,700 | $12.5M | 0.01% | +235,700 | New |
| Legal & General Group Plc | 233,836 | $12.4M | 0.00% | +5,114+2.2% | Added |
| Alliancebernstein L.P. | 233,636 | $12.3M | 0.00% | −2,817−1.2% | Reduced |
| Jane Street Group, LLC | 224,621 | $11.9M | 0.02% | −204,986−47.7% | Reduced |
| Penn Capital Management Co Inc | 214,863 | $11.4M | 1.11% | +16,327+8.2% | Added |
| Swiss National Bank | 211,800 | $11.2M | 0.01% | +1,300+0.6% | Added |
| Stephens Investment Management Group LLC | 190,857 | $10.1M | 0.14% | +33,980+21.7% | Added |
| New York State Common Retirement Fund | 182,460 | $9.64M | 0.01% | +22,660+14.2% | Added |
| Qube Research & Technologies Ltd | 181,121 | $9.57M | 0.02% | −192,753−51.6% | Reduced |
| Osterweis Capital Management Inc | 176,745 | $9.34M | 0.43% | +176,745 | New |
| California Public Employees Retirement System | 173,736 | $9.18M | 0.01% | −10,267−5.6% | Reduced |
| Corebridge Financial, Inc. | 172,977 | $9.14M | 0.05% | −11,764−6.4% | Reduced |
| Mirae Asset Global ETFs Holdings Ltd. | 165,658 | $8.76M | 0.02% | −6,130−3.6% | Reduced |
| Point72 Asset Management, L.P. | 161,153 | $8.52M | 0.02% | +93,566+138.4% | Added |
| Segall Bryant & Hamill, LLC | 161,041 | $8.51M | 0.12% | +161,041 | New |
| Natixis Advisors, L.P. | 158,683 | $8.39M | 0.02% | −136,624−46.3% | Reduced |
| DekaBank Deutsche Girozentrale | 154,173 | $8.24M | 0.02% | 00.0% | Unchanged |
| Mutual of America Capital Management LLC | 146,140 | $7.72M | 0.08% | −1,980−1.3% | Reduced |
| Castleark Management LLC | 139,890 | $7.39M | 0.26% | +139,890 | New |
| Deutsche Bank AG | 139,002 | $7.35M | 0.00% | +39,798+40.1% | Added |
| Retirement Systems of Alabama | 129,587 | $6.85M | 0.03% | −1,219−0.9% | Reduced |
| Manufacturers Life Insurance Company, The | 128,151 | $6.77M | 0.01% | +992+0.8% | Added |
| UBS Group AG | 122,994 | $6.50M | 0.00% | +42,647+53.1% | Added |
| MetLife Investment Management | 122,295 | $6.46M | 0.04% | +5,761+4.9% | Added |
| Congress Wealth Management LLC | 120,733 | $6.38M | 0.09% | +120,733 | New |
| Comerica Bank | 120,657 | $6.38M | 0.03% | +21,647+21.9% | Added |
| Royce & Associates LP | 120,135 | $6.35M | 0.06% | +120,135 | New |
| Barington Capital Group, L.P. | 120,000 | $6.34M | 5.78% | −25,100−17.3% | Reduced |
| Citigroup Inc | 117,200 | $6.20M | 0.01% | +4,285+3.8% | Added |
| Balyasny Asset Management LLC | 113,687 | $6.01M | 0.01% | −106,433−48.4% | Reduced |
| Citadel Advisors LLC | 112,495 | $5.95M | 0.01% | −72,954−39.3% | Reduced |
| Van Eck Associates Corp | 106,164 | $5.61M | 0.01% | +24,723+30.4% | Added |
| Assetmark, Inc | 104,946 | $5.55M | 0.02% | +6,208+6.3% | Added |
| California State Teachers Retirement System | 100,643 | $5.32M | 0.01% | −1,388−1.4% | Reduced |
| Polen Capital Management LLC | 99,259 | $5.25M | 0.01% | +43,109+76.8% | Added |
| State of Wisconsin Investment Board | 98,470 | $5.21M | 0.01% | +10,299+11.7% | Added |
| Wells Fargo & Company | 97,933 | $5.18M | 0.00% | +21,552+28.2% | Added |
| Trexquant Investment LP | 92,707 | $4.90M | 0.06% | −216,882−70.1% | Reduced |
| Great West Life Assurance Co | 91,911 | $4.85M | 0.01% | −3,619−3.8% | Reduced |
| Thornburg Investment Management Inc | 88,084 | $4.66M | 0.06% | +19,036+27.6% | Added |
| First Trust Advisors LP | 86,609 | $4.58M | 0.00% | −113,806−56.8% | Reduced |
| Harbor Capital Advisors, Inc. | 85,914 | $4.54M | 0.20% | +23,269+37.1% | Added |
| Granahan Investment Management Inc | 82,620 | $4.37M | 0.18% | −24,306−22.7% | Reduced |