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, Q1 2024
Institutional positions in Rambus Inc as of Mar 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
- 375
- −21 vs. Q4 2023
- Shares held
- 97.3M
- +747.6K (+0.8%) vs. Q4 2023
- Total value
- $6.00B
- −$592.3M (−9.0%) vs. Q4 2023
- New holders
- 51
- 153 more added
- Sold out
- 72
- 135 more reduced
4 institutions that held it in Q4 2023 haven't filed for Q1 2024 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2023: 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, Q1 2024
Shares, value and share of portfolio for each institution holding Rambus Inc; share changes are against Q4 2023.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| BlackRock Inc. | 15,440,957 | $954.4M | 0.02% | −17,032−0.1% | Reduced |
| Vanguard Group Inc | 11,651,114 | $720.2M | 0.01% | +275,160+2.4% | Added |
| JPMorgan Chase & Co | 6,504,549 | $402.0M | 0.04% | +1,207,496+22.8% | Added |
| State Street Corp | 4,436,516 | $274.2M | 0.01% | +184,130+4.3% | Added |
| Wellington Management Group LLP | 4,117,688 | $254.5M | 0.05% | +183,765+4.7% | Added |
| Neuberger Berman Group LLC | 3,511,130 | $217.1M | 0.18% | +1,162,966+49.5% | Added |
| Geode Capital Management, LLC | 2,490,521 | $154.0M | 0.01% | +61,461+2.5% | Added |
| Bank of New York Mellon Corp | 2,307,798 | $142.6M | 0.03% | +132,939+6.1% | Added |
| Hood River Capital Management LLC | 2,048,572 | $126.6M | 2.82% | +86,758+4.4% | Added |
| Dimensional Fund Advisors LP | 1,640,226 | $101.4M | 0.03% | −309,685−15.9% | Reduced |
| Ameriprise Financial Inc | 1,633,098 | $100.9M | 0.03% | +175,149+12.0% | Added |
| Nuveen Asset Management, LLC | 1,608,786 | $99.4M | 0.03% | +7,357+0.5% | Added |
| Northern Trust Corp | 1,447,323 | $89.5M | 0.02% | −181,031−11.1% | Reduced |
| Invesco Ltd. | 1,422,740 | $87.9M | 0.02% | +52,112+3.8% | Added |
| Norges Bank | 1,263,206 | $78.1M | 0.01% | +21,360+1.7% | Added |
| Charles Schwab Investment Management Inc | 1,210,497 | $74.8M | 0.02% | +28,571+2.4% | Added |
| Goldman Sachs Group Inc | 1,168,159 | $72.2M | 0.02% | +309,715+36.1% | Added |
| Captrust Financial Advisors | 1,258,976 | $66.6M | 0.24% | +176,103+16.3% | Added |
| Price T Rowe Associates Inc | 1,056,350 | $65.3M | 0.01% | +104,050+10.9% | Added |
| Swedbank AB | 993,000 | $61.4M | 0.09% | +243,000+32.4% | Added |
| Bank of America Corp | 983,317 | $60.8M | 0.01% | +403,809+69.7% | Added |
| Rafferty Asset Management, LLC | 957,347 | $59.2M | 0.22% | +279,687+41.3% | Added |
| Vaughan Nelson Investment Management, L.P. | 939,682 | $58.1M | 0.51% | +117,285+14.3% | Added |
| FMR LLC | 913,218 | $56.4M | 0.00% | +586,131+179.2% | Added |
| Loomis Sayles & Co L P | 836,966 | $51.7M | 0.07% | −432,355−34.1% | Reduced |
| Eagle Asset Management Inc | 812,527 | $50.6M | 0.26% | +163,956+25.3% | Added |
| Morgan Stanley | 816,143 | $50.4M | 0.00% | −154,246−15.9% | Reduced |
| Voya Investment Management LLC | 811,686 | $50.2M | 0.05% | +38,520+5.0% | Added |
| Lord, Abbett & Co. LLC | 761,473 | $47.1M | 0.15% | −1,738,165−69.5% | Reduced |
| Fred Alger Management, LLC | 719,773 | $44.5M | 0.22% | −3,186−0.4% | Reduced |
| Barclays PLC | 667,174 | $41.2M | 0.02% | −8,155−1.2% | Reduced |
| American Century Companies Inc | 643,045 | $39.7M | 0.02% | +600,940+1,427.2% | Added |
| Macquarie Group Ltd | 616,103 | $38.1M | 0.04% | −127,645−17.2% | Reduced |
| Principal Financial Group Inc | 543,545 | $33.6M | 0.02% | −332,863−38.0% | Reduced |
| Citigroup Inc | 532,916 | $32.9M | 0.04% | +328,341+160.5% | Added |
| Silvercrest Asset Management Group LLC | 510,518 | $31.6M | 0.21% | −82,344−13.9% | Reduced |
| Artisan Partners Limited Partnership | 472,168 | $29.2M | 0.04% | +202,350+75.0% | Added |
| Franklin Resources Inc | 463,796 | $28.7M | 0.01% | +417,986+912.4% | Added |
| Park West Asset Management LLC | 450,000 | $27.8M | 2.08% | +240,000+114.3% | Added |
| Westwood Holdings Group Inc. | 439,481 | $27.2M | 0.21% | +219,414+99.7% | Added |
| UBS Group AG | 428,000 | $26.5M | 0.01% | −77,665−15.4% | Reduced |
| Summit Partners Public Asset Management, LLC | 416,677 | $25.8M | 1.23% | −177,949−29.9% | Reduced |
| Panagora Asset Management Inc | 387,678 | $24.0M | 0.12% | −11,729−2.9% | Reduced |
| Emerald Advisers, LLC | 364,664 | $22.5M | 0.91% | +5,971+1.7% | Added |
| BNP Paribas Arbitrage, SA | 364,283 | $22.5M | 0.03% | +2,685+0.7% | Added |
| WCM Investment Management, LLC | 358,747 | $22.2M | 0.05% | +131,037+57.5% | Added |
| Rhumbline Advisers | 335,277 | $20.7M | 0.02% | +3,236+1.0% | Added |
| Westfield Capital Management Co LP | 328,053 | $20.3M | 0.11% | +328,053 | New |
| Axiom Investors LLC | 317,766 | $19.6M | 0.18% | +58,216+22.4% | Added |
| Mirae Asset Global Investments Co., Ltd. | 371,121 | $18.1M | 0.04% | +42,432+12.9% | Added |
| Schonfeld Strategic Advisors LLC | 284,587 | $17.6M | 0.14% | +284,587 | New |
| Mesirow Institutional Investment Management, Inc. | 282,803 | $17.5M | 1.55% | +88,338+45.4% | Added |
| New York State Common Retirement Fund | 275,495 | $17.0M | 0.02% | +18,489+7.2% | Added |
| Emerald Mutual Fund Advisers Trust | 271,430 | $16.8M | 0.87% | −24,136−8.2% | Reduced |
| Alliancebernstein L.P. | 268,017 | $16.6M | 0.01% | +22,714+9.3% | Added |
| Varma Mutual Pension Insurance Co | 266,000 | $16.4M | 0.14% | +266,000 | New |
| Legal & General Group Plc | 246,896 | $15.3M | 0.00% | −11,654−4.5% | Reduced |
| First Trust Advisors LP | 234,292 | $14.5M | 0.01% | +50,333+27.4% | Added |
| Glenmede Trust Co NA | 234,208 | $14.5M | 0.07% | +15,830+7.2% | Added |
| Victory Capital Management Inc | 226,593 | $14.0M | 0.01% | +80,419+55.0% | Added |
| Swiss National Bank | 212,200 | $13.1M | 0.01% | −2,900−1.3% | Reduced |
| Penn Capital Management Co Inc | 210,185 | $13.0M | 1.16% | −44,484−17.5% | Reduced |
| Natixis Advisors, L.P. | 208,934 | $12.9M | 0.03% | +34,875+20.0% | Added |
| Segall Bryant & Hamill, LLC | 195,350 | $12.1M | 0.23% | −1,834−0.9% | Reduced |
| Royce & Associates LP | 194,804 | $12.0M | 0.11% | +24,196+14.2% | Added |
| American International Group, Inc. | 194,551 | $12.0M | 0.04% | −4,026−2.0% | Reduced |
| Stephens Investment Management Group LLC | 192,410 | $11.9M | 0.16% | +27,721+16.8% | Added |
| SEI Investments Co | 190,480 | $11.8M | 0.02% | +22,060+13.1% | Added |
| HighTower Advisors, LLC | 190,773 | $11.7M | 0.02% | +5,370+2.9% | Added |
| California Public Employees Retirement System | 189,787 | $11.7M | 0.01% | −23,533−11.0% | Reduced |
| Susquehanna International Group, LLP | 180,629 | $11.2M | 0.02% | −12,202−6.3% | Reduced |
| Assetmark, Inc | 170,743 | $10.6M | 0.03% | +170,740+5,691,333.3% | Added |
| Crestline Management, LP | 165,704 | $10.2M | 0.97% | +71,340+75.6% | Added |
| Royal Bank of Canada | 165,119 | $10.2M | 0.00% | +78,419+90.4% | Added |
| Credit Suisse AG | 162,478 | $10.0M | 0.01% | +2,422+1.5% | Added |
| DekaBank Deutsche Girozentrale | 154,173 | $9.68M | 0.02% | +107,500+230.3% | Added |
| AXA S.A. | 152,481 | $9.42M | 0.03% | −38,545−20.2% | Reduced |
| Retirement Systems of Alabama | 135,005 | $8.34M | 0.03% | +356+0.3% | Added |
| Manufacturers Life Insurance Company, The | 131,588 | $8.13M | 0.01% | +3,478+2.7% | Added |
| Barington Capital Group, L.P. | 130,100 | $8.04M | 7.92% | 00.0% | Unchanged |
| Wells Fargo & Company | 128,487 | $7.94M | 0.00% | −3,113−2.4% | Reduced |
| Primecap Management Co | 128,200 | $7.92M | 0.01% | −6,763−5.0% | Reduced |
| UBS Asset Management Americas Inc | 128,143 | $7.92M | 0.00% | −2,342−1.8% | Reduced |
| Walleye Capital LLC | 126,135 | $7.80M | 0.08% | +108,778+626.7% | Added |
| Epoch Investment Partners, Inc. | 122,172 | $7.55M | 0.03% | −13,115−9.7% | Reduced |
| Mutual of America Capital Management LLC | 115,590 | $7.14M | 0.08% | −6,558−5.4% | Reduced |
| Citadel Advisors LLC | 112,572 | $6.96M | 0.01% | −28,181−20.0% | Reduced |
| MetLife Investment Management | 111,957 | $6.92M | 0.05% | −4,062−3.5% | Reduced |
| California State Teachers Retirement System | 107,753 | $6.66M | 0.01% | −7,412−6.4% | Reduced |
| Deutsche Bank AG | 104,419 | $6.45M | 0.00% | +38,414+58.2% | Added |
| State of Wisconsin Investment Board | 102,033 | $6.31M | 0.02% | +28,767+39.3% | Added |
| Capital Fund Management S.A. | 101,032 | $6.24M | 0.08% | −43,664−30.2% | Reduced |
| LPL Financial LLC | 94,867 | $5.86M | 0.00% | −1,035−1.1% | Reduced |
| Texas Permanent School Fund | 94,091 | $5.82M | 0.05% | +1,219+1.3% | Added |
| Kadensa Capital Ltd | 92,907 | $5.74M | 1.56% | +92,907 | New |
| Great West Life Assurance Co | 90,341 | $5.58M | 0.01% | +779+0.9% | Added |
| Lombard Odier Asset Management (Europe) Ltd | 89,559 | $5.54M | 0.35% | +89,559 | New |
| AQR Capital Management LLC | 86,852 | $5.37M | 0.01% | +31,501+56.9% | Added |
| Guggenheim Capital LLC | 85,053 | $5.26M | 0.04% | +54,100+174.8% | Added |
| Trexquant Investment LP | 83,731 | $5.18M | 0.10% | +83,731 | New |