RambusRMBS
13F holders, Q1 2026 (March 31)557holders +3
73new positions
72sold out
9famous investors
$85.86avg. 13F price*
At the end of Q1 2026, 557 institutions reported holding Rambus Inc. (RMBS) in their 13F filings, up 3 from Q4 2025. 73 opened new positions and 72 sold out. The largest holders were BlackRock, Inc. ($1.4B), Vanguard Portfolio Management LLC ($571.6M) and Invesco Ltd. ($559.1M). 9 famous investors held it, including Cliff Asness (0.0% of AQR Capital Management's portfolio), Ken Fisher (0.0% of Fisher Asset Management's portfolio) and Ray Dalio (0.0% of Bridgewater Associates's portfolio).
- Company
- Rambus Inc.
- CUSIP
- 750917106
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q4 2025 → Q1 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 73 | $302.0M |
| Exits | 72 | $138.7M |
All 13F filers, Q4 2025 → Q1 2026: 16,387,973 shares bought and 11,766,708 shares sold, net +4,621,265 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 557 holders
| BlackRock, Inc. | 0.02% | Add +0.2% | 16,305,306 | $1.4B |
| Vanguard Portfolio Management LLC | 0.03% | — | 6,644,320 | $571.6M |
| Invesco Ltd. | 0.05% | Add +56.6% | 6,499,048 | $559.1M |
| Vanguard Capital Management LLC | 0.01% | — | 4,827,854 | $415.3M |
| State Street Corp. | 0.01% | Add +2.9% | 4,373,617 | $376.3M |
| T. Rowe Price Associates Inc. | 0.03% | Reduce -37.3% | 3,376,689 | $290.5M |
| FMR LLC | 0.02% | Add +109.1% | 3,318,449 | $285.5M |
| Geode Capital Management, LLC | 0.02% | Add +9.9% | 3,124,495 | $268.8M |
| T. Rowe Price Investment Management, Inc. | 0.14% | Add +247.6% | 2,391,020 | $205.7M |
| EdgePoint Investment Group Inc. | 1.34% | Add +38.5% | 1,947,742 | $167.6M |
| Dimensional Fund Advisors LP | 0.03% | Reduce -5.2% | 1,795,295 | $154.4M |
| JPMorgan Chase & Co. | 0.01% | Reduce -11.1% | 1,836,500 | $146.4M |
| Swedbank AB | 0.14% | Add +14.7% | 1,563,000 | $134.5M |
| Bank of America Corp. | 0.01% | Add +9.0% | 1,361,570 | $117.1M |
| Northern Trust Corp. | 0.02% | Add +1.4% | 1,334,095 | $114.8M |
| Charles Schwab Investment Management Inc. | 0.02% | Reduce -0.1% | 1,326,402 | $114.1M |
| Neuberger Berman Group LLC | 0.09% | Reduce -0.3% | 1,302,169 | $111.7M |
| Congress Asset Management Co. | 0.79% | Reduce -9.5% | 1,275,978 | $109.8M |
| Morgan Stanley | 0.01% | Add +37.1% | 1,213,197 | $104.4M |
| AQR Capital Management | 0.05% | Add +75.8% | 1,250,456 | $104.0M |
| Barclays PLC | 0.03% | Add +7.1% | 1,095,701 | $94.3M |
| Bessemer Group Inc. | 0.14% | Add +1009.5% | 1,039,905 | $89.5M |
| Citigroup Inc. | 0.06% | Add +100.5% | 1,007,548 | $86.7M |
| Ameriprise Financial Inc. | 0.02% | Add +72.1% | 975,209 | $83.9M |
| UBS Group AG | 0.01% | Add +109.9% | 956,387 | $82.3M |
| Goldman Sachs Group Inc. | 0.01% | Reduce -22.8% | 922,105 | $79.3M |
| Nuveen, LLC | 0.02% | Reduce -19.0% | 892,337 | $76.8M |
| Wellington Management Group LLP | 0.01% | Reduce -8.3% | 856,598 | $73.7M |
| Bank of New York Mellon Corp | 0.01% | Reduce -28.7% | 779,878 | $67.1M |
| Voya Investment Management LLC | 0.08% | Add +5.7% | 765,785 | $65.9M |
| Raymond James Financial Inc. | 0.02% | Reduce -15.2% | 790,979 | $65.5M |
| Vanguard Fiduciary Trust Co. | 0.02% | — | 749,880 | $64.5M |
| Rafferty Asset Management, LLC | 0.26% | Reduce -20.3% | 745,519 | $64.1M |
| Fisher Asset Management | 0.02% | Add +42.7% | 738,356 | $63.5M |
| Hood River Capital Management LLC | 0.63% | Add +2.6% | 727,494 | $62.6M |
| PointState Capital LP | 1.40% | New | 701,307 | $60.3M |
| Loomis Sayles & Co. L P | 0.08% | Reduce -5.8% | 659,835 | $56.8M |
| Clearbridge Investments, LLC | 0.04% | New | 583,270 | $50.2M |
| Oberweis Asset Management Inc./ | 1.34% | Add +13.9% | 526,316 | $45.3M |
| Emerald Advisers, LLC | 1.34% | Reduce -21.3% | 493,236 | $42.4M |
| Caisse de depot et placement du Quebec | 0.06% | Add +0.3% | 448,595 | $38.6M |
| Panagora Asset Management Inc. | 0.14% | Add +0.4% | 436,431 | $37.5M |
| Schwartz Investment Counsel Inc. | 1.28% | Add +133.1% | 420,337 | $36.2M |
| Stephens Investment Management Group LLC | 0.48% | Add +110.5% | 407,783 | $35.1M |
| Lord, Abbett & Co. LLC | 0.11% | Reduce -28.2% | 387,119 | $33.3M |
| Principal Financial Group Inc. | 0.02% | Reduce -9.3% | 373,536 | $32.1M |
| Westwood Holdings Group Inc. | 0.23% | Add +29.5% | 369,150 | $31.8M |
| Janus Henderson Group PLC | 0.01% | Reduce -5.4% | 358,892 | $30.9M |
| Champlain Investment Partners, LLC | 0.39% | New | 357,223 | $30.7M |
| Sei Investments Co. | 0.03% | Reduce -12.1% | 339,931 | $29.2M |
| Shannon River Fund Management LLC | 5.48% | New | 333,817 | $28.7M |
| Nomura Asset Management International Inc. | 0.05% | Add +50.8% | 326,938 | $28.1M |
| Franklin Resources Inc. | 0.01% | Reduce -33.4% | 323,364 | $27.8M |
| Rhumbline Advisers | 0.02% | Add +1.6% | 319,580 | $27.5M |
| TimesSquare Capital Management, LLC | 0.46% | New | 312,360 | $26.9M |
| Emerald Mutual Fund Advisers Trust | 1.28% | Reduce -21.5% | 307,248 | $26.4M |
| First Trust Advisors LP | 0.02% | Add +2.4% | 307,244 | $26.4M |
| Alliancebernstein L.P. | 0.01% | Reduce -85.9% | 267,189 | $24.6M |
| Granahan Investment Management, LLC | 1.17% | Add +5.5% | 280,246 | $24.1M |
| BNP Paribas Financial Markets | 0.02% | Add +7.3% | 264,398 | $22.7M |
| ArrowMark Colorado Holdings LLC | 0.60% | Reduce -3.8% | 261,716 | $22.5M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.00% | Reduce -1.5% | 240,606 | $20.7M |
| California Public Employees Retirement System | 0.01% | Add +15.8% | 227,271 | $19.6M |
| Ranger Investment Management, L.P. | 1.40% | Add +135.0% | 224,365 | $19.3M |
| Federated Hermes, Inc. | 0.03% | Add +66.5% | 215,400 | $18.5M |
| Swiss National Bank | 0.01% | Add +0.4% | 213,000 | $18.3M |
| Osaic Holdings, Inc. | 0.03% | Reduce -8.0% | 199,726 | $17.2M |
| Canada Pension Plan Investment Board | 0.01% | Reduce -57.3% | 199,448 | $17.2M |
| Victory Capital Management Inc. | 0.01% | Add +173.2% | 182,999 | $15.7M |
| HighTower Advisors, LLC | 0.02% | Add +15.3% | 181,596 | $15.6M |
| Driehaus Capital Management LLC | 0.11% | Reduce -81.8% | 173,953 | $15.0M |
| Thrivent Financial for Lutherans | 0.03% | Add +71.5% | 162,057 | $13.9M |
| Glenmede Trust Co. NA | 0.07% | Reduce -7.8% | 159,131 | $13.7M |
| Legal & General Group Plc | 0.00% | Reduce -10.6% | 158,704 | $13.7M |
| Segall Bryant & Hamill, LLC | 0.19% | Add +45.2% | 157,450 | $13.5M |
| Steadfast Capital Management LP | 0.50% | New | 153,250 | $13.2M |
| WCM Investment Management, LLC | 0.03% | Reduce -4.3% | 165,018 | $13.2M |
| Assetmark, Inc. | 0.03% | Add +33.2% | 147,554 | $12.7M |
| DekaBank Deutsche Girozentrale | 0.02% | No change | 154,173 | $12.5M |
| Van Eck Associates Corp. | 0.01% | Reduce -1.3% | 145,251 | $12.5M |
| Millennium Management | 0.01% | Reduce -46.2% | 141,314 | $12.2M |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.02% | Reduce -6.0% | 141,085 | $12.1M |
| Axiom Investors LLC | 0.13% | Reduce -14.7% | 139,229 | $12.0M |
| Man Group plc | 0.03% | Reduce -14.6% | 139,132 | $12.0M |
| Mirae Asset Global Investments Co., Ltd. | 0.03% | Reduce -14.6% | 134,273 | $11.6M |
| Mutual of America Capital Management LLC | 0.13% | Reduce -2.8% | 132,611 | $11.4M |
| Retirement Systems of Alabama | 0.04% | Add +2.1% | 131,972 | $11.4M |
| Russell Investments Group, Ltd. | 0.01% | Reduce -8.8% | 129,892 | $11.2M |
| Tidal Investments LLC | 0.03% | Add +194.8% | 125,305 | $10.8M |
| Wells Fargo & Company | 0.00% | Reduce -42.4% | 124,889 | $10.7M |
| California State Teachers Retirement System | 0.01% | Add +22.9% | 124,195 | $10.7M |
| TD Asset Management Inc | 0.01% | Add +401.0% | 120,282 | $10.3M |
| Tairen Capital Ltd | 1.12% | New | 120,000 | $10.3M |
| Handelsbanken Fonder AB | 0.03% | Add +270.5% | 117,797 | $10.1M |
| Intech Investment Management LLC | 0.10% | Reduce -4.7% | 114,367 | $9.8M |
| Janney Montgomery Scott LLC | 0.02% | Reduce -9.8% | 110,607 | $9.5M |
| MetLife Investment Management, LLC | 0.05% | Reduce -54.3% | 109,833 | $9.4M |
| Deutsche Bank AG | 0.00% | Add +11.4% | 108,308 | $9.3M |
| Renaissance Group LLC | 0.38% | Reduce -2.7% | 105,795 | $9.1M |
| Nordea Investment Management AB | 0.01% | Reduce -10.7% | 108,055 | $8.9M |
"% of holder's portfolio" is RMBS's weight in each manager's 13F, not the share of Rambus Inc. the manager owns.