RambusRMBS
13F holders, Q2 2026 (June 30)619holders +62
129new positions
66sold out
10famous investors
$132.20avg. 13F price*
At the end of Q2 2026, 619 institutions reported holding Rambus Inc. (RMBS) in their 13F filings, up 62 from Q1 2026. 129 opened new positions and 66 sold out. The largest holders were BlackRock, Inc. ($1.9B), FMR LLC ($1.4B) and Invesco Ltd. ($880.4M). 10 famous investors held it, including Stanley Druckenmiller (0.5% of Duquesne Family Office's portfolio), Paul Tudor Jones (0.1% of Tudor Investment Corporation's portfolio) and David E. Shaw (0.1% of D. E. Shaw & Co.'s portfolio).
- Company
- Rambus Inc.
- CUSIP
- 750917106
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q1 2026 → Q2 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 129 | $335.6M |
| Exits | 66 | $360.3M |
All 13F filers, Q1 2026 → Q2 2026: 15,876,642 shares bought and 19,885,536 shares sold, net −4,008,894 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 619 holders
| BlackRock, Inc. | 0.03% | Reduce -14.4% | 13,964,477 | $1.9B |
| FMR LLC | 0.06% | Add +215.2% | 10,460,026 | $1.4B |
| Invesco Ltd. | 0.07% | Add +2.0% | 6,632,458 | $880.4M |
| Vanguard Portfolio Management LLC | 0.04% | Reduce -8.7% | 6,068,516 | $805.5M |
| Vanguard Capital Management LLC | 0.01% | Add +1.0% | 4,874,385 | $647.0M |
| State Street Corp. | 0.02% | Reduce -10.5% | 3,915,113 | $519.5M |
| T. Rowe Price Associates Inc. | 0.04% | Reduce -1.3% | 3,334,512 | $442.6M |
| Geode Capital Management, LLC | 0.02% | Reduce -26.5% | 2,297,660 | $305.1M |
| JPMorgan Chase & Co. | 0.02% | Add +14.4% | 2,101,418 | $261.0M |
| Dimensional Fund Advisors LP | 0.04% | Reduce -4.2% | 1,719,400 | $228.2M |
| Swedbank AB | 0.19% | Add +5.3% | 1,646,500 | $218.6M |
| Norges Bank | 0.02% | — | 1,532,622 | $203.4M |
| Morgan Stanley | 0.01% | Add +19.1% | 1,444,281 | $191.7M |
| Neuberger Berman Group LLC | 0.12% | Add +0.7% | 1,311,777 | $173.4M |
| Bank of America Corp. | 0.01% | Reduce -10.5% | 1,218,726 | $161.8M |
| AQR Capital Management | 0.05% | Reduce -3.1% | 1,211,009 | $152.5M |
| Charles Schwab Investment Management Inc. | 0.02% | Reduce -16.4% | 1,109,132 | $147.2M |
| EdgePoint Investment Group Inc. | 1.09% | Reduce -44.2% | 1,086,213 | $144.2M |
| Rafferty Asset Management, LLC | 0.30% | Add +32.0% | 984,388 | $130.7M |
| Goldman Sachs Group Inc. | 0.01% | Add +4.2% | 960,878 | $127.5M |
| Bessemer Group Inc. | 0.17% | Reduce -7.8% | 958,929 | $127.3M |
| Northern Trust Corp. | 0.01% | Reduce -28.9% | 949,113 | $126.0M |
| Bank of New York Mellon Corp | 0.02% | Add +6.2% | 828,233 | $109.9M |
| Manufacturers Life Insurance Company, The | 0.08% | Add +678.5% | 797,195 | $105.8M |
| Congress Asset Management Co. | 0.64% | Reduce -39.0% | 777,993 | $103.3M |
| PointState Capital LP | 1.79% | Add +9.0% | 764,172 | $101.4M |
| D. E. Shaw & Co. | 0.06% | Add +5676.7% | 739,701 | $98.2M |
| Fisher Asset Management | 0.03% | Reduce -4.4% | 705,847 | $93.7M |
| Vanguard Fiduciary Trust Co. | 0.02% | Reduce -6.8% | 699,213 | $92.8M |
| Barclays PLC | 0.03% | Reduce -41.0% | 645,970 | $85.7M |
| Raymond James Financial Inc. | 0.02% | Reduce -23.6% | 603,874 | $80.2M |
| Clearbridge Investments, LLC | 0.06% | Add +1.1% | 589,641 | $78.3M |
| Susquehanna International Group, LLP | 0.07% | Add +547.8% | 555,935 | $73.8M |
| Citigroup Inc. | 0.03% | Reduce -47.2% | 532,402 | $70.7M |
| Oberweis Asset Management Inc./ | 1.45% | Add +0.1% | 527,016 | $70.0M |
| Nuveen, LLC | 0.02% | Reduce -44.4% | 496,422 | $65.9M |
| Millennium Management | 0.04% | Add +234.6% | 472,818 | $62.8M |
| Loomis Sayles & Co. L P | 0.08% | Reduce -28.6% | 470,934 | $62.5M |
| Principal Financial Group Inc. | 0.03% | Add +15.1% | 429,951 | $57.1M |
| HRT Financial LP | 0.10% | New | 423,352 | $56.2M |
| Wellington Management Group LLP | 0.01% | Reduce -51.1% | 418,533 | $55.6M |
| Stephens Investment Management Group LLC | 0.58% | Add +0.4% | 409,436 | $54.3M |
| Citadel Advisors | 0.03% | Add +2325.9% | 400,151 | $53.1M |
| Westfield Capital Management Co. LP | 0.17% | Add +2572.6% | 385,811 | $51.2M |
| UBS Group AG | 0.01% | Reduce -60.9% | 373,590 | $49.6M |
| Maple Rock Capital Partners Inc. | 0.89% | New | 342,600 | $45.5M |
| Canada Pension Plan Investment Board | 0.02% | Add +65.8% | 330,648 | $43.9M |
| Ameriprise Financial Inc. | 0.01% | Reduce -67.1% | 321,195 | $42.6M |
| Nykredit A/S | 0.16% | — | 320,040 | $42.5M |
| Champlain Investment Partners, LLC | 1.02% | Reduce -16.2% | 299,368 | $39.7M |
| Rhumbline Advisers | 0.03% | Reduce -7.1% | 296,916 | $39.4M |
| Shannon River Fund Management LLC | 3.46% | Reduce -12.6% | 291,713 | $38.7M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.01% | Add +20.1% | 289,022 | $38.4M |
| Jupiter Topco LLC | 0.02% | — | 288,553 | $38.3M |
| Caisse de depot et placement du Quebec | 0.05% | Reduce -37.0% | 282,580 | $37.5M |
| Nomura Asset Management International Inc. | 0.05% | Reduce -16.8% | 271,982 | $36.1M |
| TimesSquare Capital Management, LLC | 0.52% | Reduce -14.3% | 267,705 | $35.5M |
| Sei Investments Co. | 0.03% | Reduce -23.0% | 261,830 | $34.8M |
| Westwood Holdings Group Inc. | 0.26% | Reduce -29.6% | 260,065 | $34.5M |
| First Trust Advisors LP | 0.02% | Reduce -15.9% | 258,308 | $34.3M |
| Gilder Gagnon Howe & Co. LLC | 0.35% | New | 257,434 | $34.2M |
| Allianz Asset Management GmbH | 0.03% | Add +186.0% | 254,879 | $33.8M |
| Emerald Advisers, LLC | 0.79% | Reduce -48.8% | 252,693 | $33.5M |
| Mackenzie Financial Corp. | 0.03% | Add +351.1% | 242,194 | $32.1M |
| California Public Employees Retirement System | 0.02% | Add +1.2% | 230,004 | $30.5M |
| Two Sigma Investments, LP | 0.02% | Add +188.0% | 222,921 | $29.6M |
| BNP Paribas Financial Markets | 0.02% | Reduce -16.5% | 220,814 | $29.3M |
| Swiss National Bank | 0.02% | Add +1.9% | 217,000 | $28.8M |
| Victory Capital Management Inc. | 0.02% | Add +13.7% | 208,063 | $27.6M |
| William Blair Investment Management, LLC | 0.08% | New | 200,116 | $26.6M |
| Tidal Investments LLC | 0.06% | Add +44.3% | 180,833 | $24.0M |
| Ranger Investment Management, L.P. | 1.48% | Reduce -21.3% | 176,692 | $23.5M |
| Duquesne Family Office | 0.53% | New | 173,000 | $23.0M |
| Royal Bank of Canada | 0.00% | Add +473.7% | 169,479 | $22.5M |
| Van Eck Associates Corp. | 0.01% | Add +15.7% | 167,993 | $22.3M |
| Russell Investments Group, Ltd. | 0.02% | Add +24.9% | 162,179 | $21.5M |
| Segall Bryant & Hamill, LLC | 0.25% | Add +1.8% | 160,293 | $21.3M |
| Lord, Abbett & Co. LLC | 0.06% | Reduce -59.1% | 158,260 | $21.0M |
| Tudor Investment Corporation | 0.09% | New | 157,155 | $20.9M |
| Mirae Asset Global Investments Co., Ltd. | 0.04% | Add +15.3% | 154,872 | $20.6M |
| Legal & General Group Plc | 0.00% | Reduce -3.0% | 153,857 | $20.4M |
| Handelsbanken Fonder AB | 0.06% | Add +28.1% | 150,857 | $20.0M |
| Los Angeles Capital Management LLC | 0.07% | Add +1052.9% | 150,204 | $19.9M |
| Driehaus Capital Management LLC | 0.11% | Reduce -16.7% | 144,875 | $19.2M |
| Retirement Systems of Alabama | 0.06% | Add +7.1% | 141,345 | $18.8M |
| Emerald Mutual Fund Advisers Trust | 0.65% | Reduce -54.7% | 139,275 | $18.5M |
| Osaic Holdings, Inc. | 0.02% | Reduce -31.3% | 137,170 | $18.2M |
| HighTower Advisors, LLC | 0.02% | Reduce -27.0% | 132,484 | $17.6M |
| Thrivent Financial for Lutherans | 0.03% | Reduce -19.9% | 129,787 | $17.2M |
| California State Teachers Retirement System | 0.02% | Add +1.0% | 125,421 | $16.6M |
| WCM Investment Management, LLC | 0.03% | Reduce -20.6% | 130,986 | $16.2M |
| Mutual of America Capital Management LLC | 0.16% | Reduce -8.4% | 121,491 | $16.1M |
| Creative Planning | 0.01% | Add +17.5% | 120,191 | $16.0M |
| Assetmark, Inc. | 0.03% | Reduce -18.8% | 119,875 | $15.9M |
| VANGUARD ASSET MANAGEMENT, Ltd | 0.01% | Add +6.5% | 103,541 | $13.7M |
| DF Dent & Co. Inc. | 0.26% | Add +0.9% | 102,771 | $13.6M |
| Nomura Holdings Inc. | 0.06% | New | 101,062 | $13.4M |
| Alliancebernstein L.P. | 0.00% | Reduce -41.9% | 155,136 | $13.3M |
| Schwartz Investment Counsel Inc. | 0.44% | Reduce -76.2% | 100,000 | $13.3M |
| Voya Investment Management LLC | 0.01% | Reduce -87.0% | 99,762 | $13.2M |
"% of holder's portfolio" is RMBS's weight in each manager's 13F, not the share of Rambus Inc. the manager owns.