RambusRMBS
13F holders, Q4 2025 (December 31)554holders +41
79new positions
52sold out
9famous investors
$91.94avg. 13F price*
At the end of Q4 2025, 554 institutions reported holding Rambus Inc. (RMBS) in their 13F filings, up 41 from Q3 2025. 79 opened new positions and 52 sold out. The largest holders were BlackRock, Inc. ($1.5B), Vanguard Group Inc. ($1.1B) and T. Rowe Price Associates Inc. ($494.9M). 9 famous investors held it, including Paul Tudor Jones (0.1% of Tudor Investment Corporation's portfolio), Ray Dalio (0.1% of Bridgewater Associates's portfolio) and Cliff Asness (0.0% of AQR Capital Management's portfolio).
- Company
- Rambus Inc.
- CUSIP
- 750917106
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q3 2025 → Q4 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 79 | $227.3M |
| Exits | 52 | $166.1M |
All 13F filers, Q3 2025 → Q4 2025: 8,396,786 shares bought and 9,202,123 shares sold, net −805,337 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 554 holders
| BlackRock, Inc. | 0.03% | Add +3.0% | 16,275,186 | $1.5B |
| Vanguard Group Inc. | 0.02% | Reduce -3.2% | 12,290,929 | $1.1B |
| T. Rowe Price Associates Inc. | 0.05% | Add +2.7% | 5,385,570 | $494.9M |
| State Street Corp. | 0.01% | Reduce -3.1% | 4,251,563 | $390.7M |
| Invesco Ltd. | 0.04% | Add +70.6% | 4,148,653 | $381.2M |
| Geode Capital Management, LLC | 0.02% | Add +3.4% | 2,842,715 | $261.3M |
| JPMorgan Chase & Co. | 0.01% | Reduce -19.2% | 2,065,343 | $189.8M |
| Alliancebernstein L.P. | 0.06% | Add +4.3% | 1,900,308 | $174.6M |
| Dimensional Fund Advisors LP | 0.04% | Reduce -1.8% | 1,893,528 | $174.0M |
| Norges Bank | 0.02% | — | 1,701,551 | $156.4M |
| FMR LLC | 0.01% | Add +15.5% | 1,587,029 | $145.8M |
| Congress Asset Management Co. | 0.91% | Add +4.7% | 1,410,615 | $129.6M |
| EdgePoint Investment Group Inc. | 1.06% | Reduce -47.6% | 1,406,686 | $129.3M |
| Swedbank AB | 0.12% | Reduce -19.8% | 1,363,000 | $125.2M |
| Charles Schwab Investment Management Inc. | 0.02% | Reduce -0.8% | 1,327,693 | $122.0M |
| Northern Trust Corp. | 0.02% | Reduce -5.1% | 1,315,551 | $120.9M |
| Neuberger Berman Group LLC | 0.09% | Reduce -11.9% | 1,305,951 | $120.1M |
| Bank of America Corp. | 0.01% | Reduce -19.4% | 1,249,642 | $114.8M |
| Goldman Sachs Group Inc. | 0.02% | Add +0.6% | 1,194,391 | $109.8M |
| Nuveen, LLC | 0.03% | Reduce -14.1% | 1,102,090 | $101.3M |
| Bank of New York Mellon Corp | 0.02% | Reduce -31.5% | 1,094,156 | $100.5M |
| Barclays PLC | 0.04% | Add +14.3% | 1,022,984 | $94.0M |
| Driehaus Capital Management LLC | 0.60% | New | 954,164 | $87.7M |
| Raymond James Financial Inc. | 0.03% | Reduce -21.7% | 932,281 | $87.1M |
| Rafferty Asset Management, LLC | 0.30% | Add +3.8% | 935,784 | $86.0M |
| Wellington Management Group LLP | 0.02% | Add +24.4% | 933,934 | $85.8M |
| Morgan Stanley | 0.00% | Reduce -17.0% | 885,092 | $81.3M |
| Voya Investment Management LLC | 0.08% | Reduce -5.8% | 724,208 | $66.5M |
| AQR Capital Management | 0.03% | Add +29.9% | 711,126 | $65.3M |
| Hood River Capital Management LLC | 0.71% | Reduce -15.5% | 708,846 | $65.1M |
| Loomis Sayles & Co. L P | 0.08% | Add +14.8% | 700,333 | $64.4M |
| T. Rowe Price Investment Management, Inc. | 0.04% | Reduce -5.7% | 687,840 | $63.2M |
| Emerald Advisers, LLC | 1.77% | Reduce -1.7% | 626,985 | $57.6M |
| Ameriprise Financial Inc. | 0.01% | Add +23.2% | 566,679 | $52.1M |
| Allspring Global Investments Holdings, LLC | 0.08% | Add +5.4% | 522,226 | $51.8M |
| Lord, Abbett & Co. LLC | 0.16% | Reduce -27.8% | 539,028 | $49.5M |
| Fisher Asset Management | 0.02% | Add +238.3% | 517,278 | $47.5M |
| Citigroup Inc. | 0.03% | Add +35.7% | 502,540 | $46.2M |
| Franklin Resources Inc. | 0.01% | Add +2.9% | 485,805 | $44.6M |
| Canada Pension Plan Investment Board | 0.03% | Add +83.3% | 466,600 | $42.9M |
| Oberweis Asset Management Inc./ | 1.55% | Reduce -9.0% | 462,100 | $42.5M |
| UBS Group AG | 0.01% | Reduce -19.5% | 455,670 | $41.9M |
| Caisse de depot et placement du Quebec | 0.07% | Add +17.5% | 447,309 | $41.1M |
| Panagora Asset Management Inc. | 0.14% | Reduce -0.8% | 434,703 | $39.9M |
| Principal Financial Group Inc. | 0.02% | Reduce -12.9% | 411,719 | $37.8M |
| Emerald Mutual Fund Advisers Trust | 1.75% | No change | 391,215 | $35.9M |
| Sei Investments Co. | 0.04% | Add +37.9% | 386,745 | $35.5M |
| Janus Henderson Group PLC | 0.02% | Reduce -1.2% | 379,515 | $34.9M |
| Westfield Capital Management Co. LP | 0.14% | Reduce -25.3% | 362,092 | $33.3M |
| William Blair Investment Management, LLC | 0.08% | Add +8.7% | 316,397 | $29.1M |
| Rhumbline Advisers | 0.02% | Reduce -8.7% | 314,612 | $28.9M |
| Public Sector Pension Investment Board | 0.09% | New | 305,209 | $28.0M |
| First Trust Advisors LP | 0.02% | Add +49.7% | 300,156 | $27.6M |
| Lazard Asset Management LLC | 0.05% | Reduce -0.3% | 297,870 | $27.4M |
| Westwood Holdings Group Inc. | 0.22% | Add +21.3% | 285,073 | $26.2M |
| ArrowMark Colorado Holdings LLC | 0.55% | New | 272,010 | $25.0M |
| Granahan Investment Management, LLC | 1.04% | Add +11.3% | 265,516 | $24.4M |
| Millennium Management | 0.02% | Add +33.1% | 262,578 | $24.1M |
| Silvercrest Asset Management Group LLC | 0.16% | Reduce -46.2% | 249,986 | $23.0M |
| BNP Paribas Financial Markets | 0.01% | Add +49.1% | 246,494 | $22.7M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.00% | Reduce -3.8% | 244,344 | $22.5M |
| MetLife Investment Management, LLC | 0.11% | Reduce -2.3% | 240,162 | $22.1M |
| Osaic Holdings, Inc. | 0.03% | Reduce -3.4% | 217,072 | $19.9M |
| Wells Fargo & Company | 0.00% | Add +19.9% | 216,914 | $19.9M |
| Nomura Asset Management International Inc. | 0.03% | — | 216,867 | $19.9M |
| Prudential Financial Inc. | 0.02% | Reduce -3.3% | 213,642 | $19.6M |
| Swiss National Bank | 0.01% | Add +1.9% | 212,200 | $19.5M |
| Algert Global LLC | 0.29% | Add +65.2% | 202,222 | $18.6M |
| California Public Employees Retirement System | 0.01% | Add +0.1% | 196,207 | $18.0M |
| Stephens Investment Management Group LLC | 0.23% | Add +0.2% | 193,702 | $17.8M |
| Schwartz Investment Counsel Inc. | 0.58% | Reduce -21.7% | 180,337 | $16.6M |
| WCM Investment Management, LLC | 0.03% | Reduce -42.3% | 172,366 | $16.3M |
| Legal & General Group Plc | 0.00% | Reduce -19.2% | 177,596 | $16.3M |
| Glenmede Trust Co. NA | 0.08% | — | 172,534 | $15.9M |
| Citadel Advisors | 0.01% | Add +147.3% | 169,902 | $15.6M |
| Acadian Asset Management LLC | 0.03% | Add +5.2% | 169,421 | $15.6M |
| Axiom Investors LLC | 0.13% | New | 163,242 | $15.0M |
| Man Group plc | 0.03% | Add +21.3% | 162,940 | $15.0M |
| HighTower Advisors, LLC | 0.02% | Add +2.2% | 157,470 | $14.5M |
| Mirae Asset Global Investments Co., Ltd. | 0.04% | Add +21.2% | 157,148 | $14.4M |
| Bridgewater Associates | 0.05% | Reduce -11.9% | 154,296 | $14.2M |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.02% | Reduce -1.6% | 150,124 | $13.8M |
| Van Eck Associates Corp. | 0.01% | Reduce -3.5% | 147,123 | $13.5M |
| Two Sigma Investments, LP | 0.02% | Add +85.4% | 144,403 | $13.3M |
| Russell Investments Group, Ltd. | 0.01% | Reduce -4.0% | 142,390 | $13.1M |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 0.02% | Add +162.6% | 137,692 | $12.7M |
| Mutual of America Capital Management LLC | 0.13% | Reduce -3.9% | 136,390 | $12.5M |
| Federated Hermes, Inc. | 0.02% | Add +17.8% | 129,360 | $11.9M |
| Retirement Systems of Alabama | 0.04% | Reduce -0.7% | 129,198 | $11.9M |
| Janney Montgomery Scott LLC | 0.03% | New | 122,562 | $11.3M |
| Nordea Investment Management AB | 0.01% | Reduce -13.2% | 120,976 | $11.2M |
| Intech Investment Management LLC | 0.10% | Add +85.9% | 120,052 | $11.0M |
| Manufacturers Life Insurance Company, The | 0.01% | Reduce -1.2% | 113,988 | $10.5M |
| Assetmark, Inc. | 0.02% | Reduce -8.6% | 110,754 | $10.2M |
| Renaissance Group LLC | 0.40% | Add +0.3% | 108,775 | $10.0M |
| Segall Bryant & Hamill, LLC | 0.13% | Reduce -56.3% | 108,429 | $10.0M |
| DekaBank Deutsche Girozentrale | 0.02% | No change | 154,173 | $9.5M |
| Schroder Investment Management Group | 0.01% | Reduce -30.8% | 99,055 | $9.4M |
| Tudor Investment Corporation | 0.05% | New | 101,605 | $9.3M |
| State of Wisconsin Investment Board | 0.02% | Reduce -11.9% | 101,320 | $9.3M |
"% of holder's portfolio" is RMBS's weight in each manager's 13F, not the share of Rambus Inc. the manager owns.