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 |
|---|---|---|---|---|---|
| Credit Suisse AG | 162,478 | $10.0M | 0.01% | +2,422+1.5% | Added |
| Royal Bank of Canada | 165,119 | $10.2M | 0.00% | +78,419+90.4% | Added |
| Crestline Management, LP | 165,704 | $10.2M | 0.97% | +71,340+75.6% | Added |
| Assetmark, Inc | 170,743 | $10.6M | 0.03% | +170,740+5,691,333.3% | Added |
| Susquehanna International Group, LLP | 180,629 | $11.2M | 0.02% | −12,202−6.3% | Reduced |
| California Public Employees Retirement System | 189,787 | $11.7M | 0.01% | −23,533−11.0% | Reduced |
| HighTower Advisors, LLC | 190,773 | $11.7M | 0.02% | +5,370+2.9% | Added |
| SEI Investments Co | 190,480 | $11.8M | 0.02% | +22,060+13.1% | Added |
| Stephens Investment Management Group LLC | 192,410 | $11.9M | 0.16% | +27,721+16.8% | Added |
| American International Group, Inc. | 194,551 | $12.0M | 0.04% | −4,026−2.0% | Reduced |
| Royce & Associates LP | 194,804 | $12.0M | 0.11% | +24,196+14.2% | Added |
| Segall Bryant & Hamill, LLC | 195,350 | $12.1M | 0.23% | −1,834−0.9% | Reduced |
| Natixis Advisors, L.P. | 208,934 | $12.9M | 0.03% | +34,875+20.0% | Added |
| Penn Capital Management Co Inc | 210,185 | $13.0M | 1.16% | −44,484−17.5% | Reduced |
| Swiss National Bank | 212,200 | $13.1M | 0.01% | −2,900−1.3% | Reduced |
| Victory Capital Management Inc | 226,593 | $14.0M | 0.01% | +80,419+55.0% | Added |
| Glenmede Trust Co NA | 234,208 | $14.5M | 0.07% | +15,830+7.2% | Added |
| First Trust Advisors LP | 234,292 | $14.5M | 0.01% | +50,333+27.4% | Added |
| Legal & General Group Plc | 246,896 | $15.3M | 0.00% | −11,654−4.5% | Reduced |
| Varma Mutual Pension Insurance Co | 266,000 | $16.4M | 0.14% | +266,000 | New |
| Alliancebernstein L.P. | 268,017 | $16.6M | 0.01% | +22,714+9.3% | Added |
| Emerald Mutual Fund Advisers Trust | 271,430 | $16.8M | 0.87% | −24,136−8.2% | Reduced |
| New York State Common Retirement Fund | 275,495 | $17.0M | 0.02% | +18,489+7.2% | Added |
| Mesirow Institutional Investment Management, Inc. | 282,803 | $17.5M | 1.55% | +88,338+45.4% | Added |
| Schonfeld Strategic Advisors LLC | 284,587 | $17.6M | 0.14% | +284,587 | New |
| Mirae Asset Global Investments Co., Ltd. | 371,121 | $18.1M | 0.04% | +42,432+12.9% | Added |
| Axiom Investors LLC | 317,766 | $19.6M | 0.18% | +58,216+22.4% | Added |
| Westfield Capital Management Co LP | 328,053 | $20.3M | 0.11% | +328,053 | New |
| Rhumbline Advisers | 335,277 | $20.7M | 0.02% | +3,236+1.0% | Added |
| WCM Investment Management, LLC | 358,747 | $22.2M | 0.05% | +131,037+57.5% | Added |
| BNP Paribas Arbitrage, SA | 364,283 | $22.5M | 0.03% | +2,685+0.7% | Added |
| Emerald Advisers, LLC | 364,664 | $22.5M | 0.91% | +5,971+1.7% | Added |
| Panagora Asset Management Inc | 387,678 | $24.0M | 0.12% | −11,729−2.9% | Reduced |
| Summit Partners Public Asset Management, LLC | 416,677 | $25.8M | 1.23% | −177,949−29.9% | Reduced |
| UBS Group AG | 428,000 | $26.5M | 0.01% | −77,665−15.4% | Reduced |
| Westwood Holdings Group Inc. | 439,481 | $27.2M | 0.21% | +219,414+99.7% | Added |
| Park West Asset Management LLC | 450,000 | $27.8M | 2.08% | +240,000+114.3% | Added |
| Franklin Resources Inc | 463,796 | $28.7M | 0.01% | +417,986+912.4% | Added |
| Artisan Partners Limited Partnership | 472,168 | $29.2M | 0.04% | +202,350+75.0% | Added |
| Silvercrest Asset Management Group LLC | 510,518 | $31.6M | 0.21% | −82,344−13.9% | Reduced |
| Citigroup Inc | 532,916 | $32.9M | 0.04% | +328,341+160.5% | Added |
| Principal Financial Group Inc | 543,545 | $33.6M | 0.02% | −332,863−38.0% | Reduced |
| Macquarie Group Ltd | 616,103 | $38.1M | 0.04% | −127,645−17.2% | Reduced |
| American Century Companies Inc | 643,045 | $39.7M | 0.02% | +600,940+1,427.2% | Added |
| Barclays PLC | 667,174 | $41.2M | 0.02% | −8,155−1.2% | Reduced |
| Fred Alger Management, LLC | 719,773 | $44.5M | 0.22% | −3,186−0.4% | Reduced |
| Lord, Abbett & Co. LLC | 761,473 | $47.1M | 0.15% | −1,738,165−69.5% | Reduced |
| Voya Investment Management LLC | 811,686 | $50.2M | 0.05% | +38,520+5.0% | Added |
| Morgan Stanley | 816,143 | $50.4M | 0.00% | −154,246−15.9% | Reduced |
| Eagle Asset Management Inc | 812,527 | $50.6M | 0.26% | +163,956+25.3% | Added |
| Loomis Sayles & Co L P | 836,966 | $51.7M | 0.07% | −432,355−34.1% | Reduced |
| FMR LLC | 913,218 | $56.4M | 0.00% | +586,131+179.2% | Added |
| Vaughan Nelson Investment Management, L.P. | 939,682 | $58.1M | 0.51% | +117,285+14.3% | Added |
| Rafferty Asset Management, LLC | 957,347 | $59.2M | 0.22% | +279,687+41.3% | Added |
| Bank of America Corp | 983,317 | $60.8M | 0.01% | +403,809+69.7% | Added |
| Swedbank AB | 993,000 | $61.4M | 0.09% | +243,000+32.4% | Added |
| Price T Rowe Associates Inc | 1,056,350 | $65.3M | 0.01% | +104,050+10.9% | Added |
| Captrust Financial Advisors | 1,258,976 | $66.6M | 0.24% | +176,103+16.3% | Added |
| Goldman Sachs Group Inc | 1,168,159 | $72.2M | 0.02% | +309,715+36.1% | Added |
| Charles Schwab Investment Management Inc | 1,210,497 | $74.8M | 0.02% | +28,571+2.4% | Added |
| Norges Bank | 1,263,206 | $78.1M | 0.01% | +21,360+1.7% | Added |
| Invesco Ltd. | 1,422,740 | $87.9M | 0.02% | +52,112+3.8% | Added |
| Northern Trust Corp | 1,447,323 | $89.5M | 0.02% | −181,031−11.1% | Reduced |
| Nuveen Asset Management, LLC | 1,608,786 | $99.4M | 0.03% | +7,357+0.5% | Added |
| Ameriprise Financial Inc | 1,633,098 | $100.9M | 0.03% | +175,149+12.0% | Added |
| Dimensional Fund Advisors LP | 1,640,226 | $101.4M | 0.03% | −309,685−15.9% | Reduced |
| Hood River Capital Management LLC | 2,048,572 | $126.6M | 2.82% | +86,758+4.4% | Added |
| Bank of New York Mellon Corp | 2,307,798 | $142.6M | 0.03% | +132,939+6.1% | Added |
| Geode Capital Management, LLC | 2,490,521 | $154.0M | 0.01% | +61,461+2.5% | Added |
| Neuberger Berman Group LLC | 3,511,130 | $217.1M | 0.18% | +1,162,966+49.5% | Added |
| Wellington Management Group LLP | 4,117,688 | $254.5M | 0.05% | +183,765+4.7% | Added |
| State Street Corp | 4,436,516 | $274.2M | 0.01% | +184,130+4.3% | Added |
| JPMorgan Chase & Co | 6,504,549 | $402.0M | 0.04% | +1,207,496+22.8% | Added |
| Vanguard Group Inc | 11,651,114 | $720.2M | 0.01% | +275,160+2.4% | Added |
| BlackRock Inc. | 15,440,957 | $954.4M | 0.02% | −17,032−0.1% | Reduced |
| Polar Capital Holdings Plc | 0 | $0 | 0.00% | −1,511,521−100.0% | Sold out |
| Driehaus Capital Management LLC | 0 | $0 | 0.00% | −772,842−100.0% | Sold out |
| HRT Financial LP | 0 | $0 | 0.00% | −334,023−100.0% | Sold out |
| Cercano Management LLC | 0 | $0 | 0.00% | −320,184−100.0% | Sold out |
| Twinbeech Capital LP | 0 | $0 | 0.00% | −252,625−100.0% | Sold out |
| Amundi | 0 | $0 | 0.00% | −114,695−100.0% | Sold out |
| Ghisallo Capital Management LLC | 0 | $0 | 0.00% | −75,506−100.0% | Sold out |
| EAM Investors, LLC | 0 | $0 | 0.00% | −70,088−100.0% | Sold out |
| EAM Global Investors LLC | 0 | $0 | 0.00% | −61,106−100.0% | Sold out |
| Concentric Capital Strategies, LP | 0 | $0 | 0.00% | −45,227−100.0% | Sold out |
| Zweig-DiMenna Associates LLC | 0 | $0 | 0.00% | −34,125−100.0% | Sold out |
| Lazard Asset Management LLC | 0 | $0 | 0.00% | −14,515−100.0% | Sold out |
| Cetera Advisor Networks LLC | 0 | $0 | 0.00% | −13,824−100.0% | Sold out |
| Hanseatic Management Services Inc | 0 | $0 | 0.00% | −13,115−100.0% | Sold out |
| Barometer Capital Management Inc. | 0 | $0 | 0.00% | −11,600−100.0% | Sold out |
| Juncture Wealth Strategies, LLC | 0 | $0 | 0.00% | −11,137−100.0% | Sold out |
| TriaGen Wealth Management LLC | 0 | $0 | 0.00% | −10,513−100.0% | Sold out |
| Qube Research & Technologies Ltd | 0 | $0 | 0.00% | −10,133−100.0% | Sold out |
| Virtue Capital Management, LLC | 0 | $0 | 0.00% | – | Sold out |
| ARGA Investment Management, LP | 0 | $0 | 0.00% | −9,134−100.0% | Sold out |
| Nebula Research & Development LLC | 0 | $0 | 0.00% | −8,831−100.0% | Sold out |
| Inspire Advisors, LLC | 0 | $0 | 0.00% | −8,598−100.0% | Sold out |
| Group One Trading, L.P. | 0 | $0 | 0.00% | −8,148−100.0% | Sold out |
| XTX Topco Ltd | 0 | $0 | 0.00% | −7,504−100.0% | Sold out |
| Brevan Howard Capital Management LP | 0 | $0 | 0.00% | −7,296−100.0% | Sold out |