RambusRMBS
13F holders, Q1 2025 (March 31)414holders +19
71new positions
52sold out
6famous investors
$51.92avg. 13F price*
At the end of Q1 2025, 414 institutions reported holding Rambus Inc. (RMBS) in their 13F filings, up 19 from Q4 2024. 71 opened new positions and 52 sold out. The largest holders were BlackRock, Inc. ($737.1M), Vanguard Group Inc. ($644.2M) and T. Rowe Price Associates Inc. ($452.9M). 6 famous investors held it, including Ray Dalio (0.0% of Bridgewater Associates's portfolio), Cliff Asness (0.0% of AQR Capital Management's portfolio) and Israel Englander (0.0% of Millennium Management's portfolio).
- Company
- Rambus Inc.
- CUSIP
- 750917106
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q4 2024 → Q1 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 71 | $223.9M |
| Exits | 52 | $72.1M |
All 13F filers, Q4 2024 → Q1 2025: 11,247,521 shares bought and 7,900,152 shares sold, net +3,347,369 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 414 holders
| BlackRock, Inc. | 0.02% | Add +0.7% | 14,236,566 | $737.1M |
| Vanguard Group Inc. | 0.01% | Reduce -1.2% | 12,442,412 | $644.2M |
| T. Rowe Price Associates Inc. | 0.06% | Add +60.5% | 8,746,856 | $452.9M |
| State Street Corp. | 0.01% | Reduce -3.3% | 4,580,557 | $237.2M |
| Invesco Ltd. | 0.04% | Reduce -9.3% | 4,532,026 | $234.6M |
| JPMorgan Chase & Co. | 0.01% | Reduce -12.8% | 3,647,406 | $188.8M |
| Geode Capital Management, LLC | 0.01% | Add +2.9% | 2,651,947 | $137.3M |
| Norges Bank | 0.01% | Add +12.6% | 2,009,726 | $104.1M |
| Dimensional Fund Advisors LP | 0.02% | Add +7.7% | 1,868,434 | $96.7M |
| Bank of New York Mellon Corp | 0.02% | Reduce -14.9% | 1,784,251 | $92.4M |
| Swedbank AB | 0.12% | No change | 1,700,000 | $88.0M |
| American Century Companies Inc. | 0.05% | Add +21.1% | 1,424,365 | $73.7M |
| Northern Trust Corp. | 0.01% | Reduce -2.9% | 1,420,613 | $73.6M |
| Neuberger Berman Group LLC | 0.06% | Reduce -22.7% | 1,282,168 | $66.7M |
| Charles Schwab Investment Management Inc. | 0.01% | Add +0.5% | 1,256,346 | $65.0M |
| Westwood Holdings Group Inc. | 0.49% | Add +9.3% | 1,232,210 | $63.8M |
| Congress Asset Management Co. | 0.46% | Add +38.5% | 1,199,564 | $62.1M |
| Wellington Management Group LLP | 0.01% | Reduce -4.4% | 1,194,046 | $61.8M |
| EdgePoint Investment Group Inc. | 0.49% | New | 1,169,194 | $60.5M |
| Voya Investment Management LLC | 0.08% | Reduce -1.4% | 1,109,115 | $57.4M |
| Nuveen, LLC | 0.02% | — | 1,102,549 | $57.1M |
| Westfield Capital Management Co. LP | 0.27% | Reduce -21.6% | 1,089,081 | $56.4M |
| Hood River Capital Management LLC | 0.83% | New | 944,894 | $48.9M |
| Raymond James Financial Inc. | 0.02% | Reduce -3.5% | 939,712 | $48.7M |
| Morgan Stanley | 0.00% | Add +2.5% | 938,032 | $48.6M |
| Analog Century Management LP | 2.85% | Reduce -17.6% | 680,113 | $35.2M |
| Goldman Sachs Group Inc. | 0.01% | Reduce -35.8% | 672,978 | $34.8M |
| Park West Asset Management LLC | 2.49% | New | 589,150 | $30.5M |
| Vaughan Nelson Investment Management, L.P. | 0.29% | Reduce -23.5% | 562,813 | $29.1M |
| Emerald Advisers, LLC | 1.24% | Reduce -2.4% | 530,702 | $27.5M |
| Silvercrest Asset Management Group LLC | 0.19% | Reduce -0.4% | 513,928 | $26.6M |
| Oberweis Asset Management Inc./ | 1.31% | Add +23.9% | 507,350 | $26.3M |
| Principal Financial Group Inc. | 0.01% | Add +53.5% | 506,713 | $26.2M |
| SG Americas Securities, LLC | 0.09% | Reduce -11.2% | 490,547 | $25.4M |
| Panagora Asset Management Inc. | 0.12% | Add +5.2% | 460,438 | $23.8M |
| WCM Investment Management, LLC | 0.05% | Add +0.6% | 388,655 | $20.9M |
| Bank of America Corp. | 0.00% | Reduce -4.5% | 396,717 | $20.5M |
| Schwartz Investment Counsel Inc. | 0.68% | New | 380,337 | $19.7M |
| Franklin Resources Inc. | 0.01% | Reduce -7.8% | 374,380 | $19.4M |
| MetLife Investment Management, LLC | 0.10% | Add +194.9% | 360,635 | $18.7M |
| New York State Common Retirement Fund | 0.03% | Add +93.1% | 352,312 | $18.2M |
| Jane Street Group, LLC | 0.03% | Add +55.1% | 348,291 | $18.0M |
| Lord, Abbett & Co. LLC | 0.07% | New | 341,986 | $17.7M |
| Sei Investments Co. | 0.02% | Add +10.2% | 337,225 | $17.5M |
| Rhumbline Advisers | 0.02% | Add +0.3% | 333,069 | $17.2M |
| Two Sigma Investments, LP | 0.04% | Reduce -40.9% | 313,174 | $16.2M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.00% | Add +6.6% | 309,512 | $16.0M |
| Emerald Mutual Fund Advisers Trust | 1.16% | Reduce -14.3% | 306,106 | $15.8M |
| Glenmede Trust Co. NA | 0.08% | Reduce -2.6% | 301,612 | $15.6M |
| Two Sigma Advisers, LP | 0.03% | Reduce -32.5% | 293,800 | $15.2M |
| Osterweis Capital Management Inc. | 1.00% | Add +62.0% | 286,305 | $14.8M |
| Segall Bryant & Hamill, LLC | 0.23% | Add +77.5% | 285,762 | $14.8M |
| Ameriprise Financial Inc. | 0.00% | Add +12.4% | 280,065 | $14.5M |
| Prudential Financial Inc. | 0.02% | Reduce -11.1% | 257,256 | $13.3M |
| Macquarie Group Ltd. | 0.02% | Add +6.6% | 255,480 | $13.2M |
| Penn Capital Management Company, LLC | 1.25% | Add +14.9% | 246,829 | $12.8M |
| PenderFund Capital Management Ltd. | 4.51% | Add +130.0% | 299 | $12.7M |
| Qube Research & Technologies Ltd | 0.02% | Add +35.2% | 244,888 | $12.7M |
| Millennium Management | 0.01% | Reduce -60.3% | 236,095 | $12.2M |
| AQR Capital Management | 0.01% | Reduce -25.1% | 239,630 | $12.2M |
| Legal & General Group Plc | 0.00% | Reduce -1.7% | 229,927 | $11.9M |
| SummitTX Capital, L.P. | 0.52% | — | 228,164 | $11.8M |
| Alliancebernstein L.P. | 0.00% | Reduce -2.5% | 227,798 | $11.8M |
| Swiss National Bank | 0.01% | Reduce -2.5% | 206,400 | $10.7M |
| Schonfeld Strategic Advisors LLC | 0.07% | New | 203,645 | $10.5M |
| Royal Bank of Canada | 0.00% | Reduce -17.3% | 201,722 | $10.4M |
| Janus Henderson Group PLC | 0.01% | Reduce -44.5% | 190,318 | $10.2M |
| Stephens Investment Management Group LLC | 0.14% | Add +1.5% | 193,661 | $10.0M |
| HighTower Advisors, LLC | 0.01% | Reduce -18.4% | 193,544 | $10.0M |
| Deutsche Bank AG | 0.00% | Add +38.7% | 192,826 | $10.0M |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.02% | Add +10.4% | 182,940 | $9.5M |
| CW Advisors, LLC | 0.11% | Add +51.3% | 182,656 | $9.5M |
| Barclays PLC | 0.00% | Reduce -31.5% | 180,435 | $9.3M |
| Royce & Associates LP | 0.10% | Add +49.8% | 179,907 | $9.3M |
| Assenagon Asset Management S.A. | 0.02% | Reduce -76.5% | 178,858 | $9.3M |
| California Public Employees Retirement System | 0.01% | Reduce -0.8% | 172,384 | $8.9M |
| Algert Global LLC | 0.22% | Reduce -41.5% | 171,296 | $8.9M |
| Corebridge Financial, Inc. | 0.05% | Reduce -2.1% | 169,347 | $8.8M |
| DekaBank Deutsche Girozentrale | 0.02% | No change | 154,173 | $8.2M |
| Mutual of America Capital Management LLC | 0.09% | Reduce -0.8% | 144,922 | $7.5M |
| Canada Pension Plan Investment Board | 0.01% | Reduce -40.3% | 140,700 | $7.3M |
| Russell Investments Group, Ltd. | 0.01% | Add +77.0% | 140,157 | $7.3M |
| Susquehanna International Group, LLP | 0.01% | Add +187.9% | 131,497 | $6.8M |
| Retirement Systems of Alabama | 0.03% | Add +0.1% | 129,715 | $6.7M |
| First Trust Advisors LP | 0.01% | Add +48.6% | 128,729 | $6.7M |
| Granahan Investment Management, LLC | 0.33% | Add +55.8% | 128,682 | $6.7M |
| Van Eck Associates Corp. | 0.01% | Add +20.9% | 128,303 | $6.6M |
| Manufacturers Life Insurance Company, The | 0.01% | Reduce -1.6% | 126,053 | $6.5M |
| UBS Group AG | 0.00% | Reduce -0.3% | 122,676 | $6.4M |
| Natixis Advisors, LLC | 0.01% | Reduce -22.8% | 122,479 | $6.3M |
| Castleark Management LLC | 0.21% | Reduce -15.6% | 118,100 | $6.1M |
| Assetmark, Inc. | 0.02% | Add +9.1% | 114,456 | $5.9M |
| Citigroup Inc. | 0.00% | Reduce -4.5% | 111,954 | $5.8M |
| Wells Fargo & Company | 0.00% | Add +11.7% | 109,342 | $5.7M |
| Polen Capital Management LLC | 0.02% | Add +9.9% | 109,117 | $5.6M |
| Lazard Asset Management LLC | 0.01% | Add +57.0% | 108,577 | $5.6M |
| State of Wisconsin Investment Board | 0.01% | Add +4.5% | 102,871 | $5.3M |
| Comerica Bank | 0.02% | Reduce -16.3% | 101,012 | $5.2M |
| Fred Alger Management, LLC | 0.03% | Add +59.7% | 99,820 | $5.2M |
| California State Teachers Retirement System | 0.01% | Reduce -1.1% | 99,515 | $5.2M |
"% of holder's portfolio" is RMBS's weight in each manager's 13F, not the share of Rambus Inc. the manager owns.