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, Q3 2023
Institutional positions in Rambus Inc as of Sep 30, 2023. 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
- 350
- −41 vs. Q2 2023
- Shares held
- 98.0M
- +2.29M (+2.4%) vs. Q2 2023
- Total value
- $5.48B
- −$656.3M (−10.7%) vs. Q2 2023
- New holders
- 40
- 153 more added
- Sold out
- 81
- 115 more reduced
2 institutions that held it in Q2 2023 haven't filed for Q3 2023 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q2 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, Q3 2023
Shares, value and share of portfolio for each institution holding Rambus Inc; share changes are against Q2 2023.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| BlackRock Inc. | 18,890,097 | $1.05B | 0.03% | +506,826+2.8% | Added |
| Vanguard Group Inc | 12,770,856 | $712.5M | 0.02% | −48,623−0.4% | Reduced |
| JPMorgan Chase & Co | 4,794,327 | $267.5M | 0.03% | +616,670+14.8% | Added |
| State Street Corp | 4,519,945 | $252.2M | 0.01% | +135,857+3.1% | Added |
| Ameriprise Financial Inc | 3,134,868 | $174.9M | 0.06% | +515,657+19.7% | Added |
| Neuberger Berman Group LLC | 2,831,610 | $158.0M | 0.14% | +35,894+1.3% | Added |
| Geode Capital Management, LLC | 2,312,601 | $129.1M | 0.02% | +87,942+4.0% | Added |
| Dimensional Fund Advisors LP | 2,300,253 | $128.3M | 0.04% | −85,905−3.6% | Reduced |
| Bank of New York Mellon Corp | 1,987,653 | $110.9M | 0.02% | +861,427+76.5% | Added |
| Whale Rock Capital Management LLC | 1,885,137 | $105.2M | 2.12% | +1,121,355+146.8% | Added |
| Wellington Management Group LLP | 1,784,527 | $99.6M | 0.02% | −87,271−4.7% | Reduced |
| Hood River Capital Management LLC | 1,740,030 | $97.1M | 3.12% | +522,061+42.9% | Added |
| Nuveen Asset Management, LLC | 1,707,056 | $95.2M | 0.03% | +175,021+11.4% | Added |
| Lord, Abbett & Co. LLC | 1,521,154 | $84.9M | 0.32% | −520,353−25.5% | Reduced |
| Northern Trust Corp | 1,515,278 | $84.5M | 0.02% | +5,856+0.4% | Added |
| Loomis Sayles & Co L P | 1,424,381 | $79.5M | 0.14% | −33,630−2.3% | Reduced |
| Polar Capital Holdings Plc | 1,414,394 | $78.9M | 0.59% | +105,281+8.0% | Added |
| Invesco Ltd. | 1,300,197 | $72.5M | 0.02% | −589,150−31.2% | Reduced |
| Vaughan Nelson Investment Management, L.P. | 1,211,672 | $67.6M | 0.76% | +33,935+2.9% | Added |
| Charles Schwab Investment Management Inc | 1,206,150 | $67.3M | 0.02% | +369,816+44.2% | Added |
| Captrust Financial Advisors | 1,071,722 | $59.8M | 0.23% | +45,532+4.4% | Added |
| Morgan Stanley | 1,050,037 | $58.6M | 0.01% | −458,307−30.4% | Reduced |
| Norges Bank | 969,816 | $54.1M | 0.01% | −31,379−3.1% | Reduced |
| Principal Financial Group Inc | 926,399 | $51.7M | 0.04% | −12,903−1.4% | Reduced |
| Price T Rowe Associates Inc | 808,834 | $45.1M | 0.01% | +106,680+15.2% | Added |
| Fred Alger Management, LLC | 805,631 | $44.9M | 0.26% | +452,190+127.9% | Added |
| Swedbank AB | 800,000 | $44.6M | 0.08% | +150,000+23.1% | Added |
| Goldman Sachs Group Inc | 725,140 | $40.5M | 0.01% | +424,925+141.5% | Added |
| Macquarie Group Ltd | 638,806 | $35.6M | 0.04% | +293,904+85.2% | Added |
| Bank of America Corp | 635,224 | $35.4M | 0.00% | +432,026+212.6% | Added |
| Driehaus Capital Management LLC | 608,991 | $34.0M | 0.44% | +1,368+0.2% | Added |
| Rafferty Asset Management, LLC | 596,990 | $33.3M | 0.20% | +596,990 | New |
| Silvercrest Asset Management Group LLC | 596,173 | $33.3M | 0.25% | −277,876−31.8% | Reduced |
| Eagle Asset Management Inc | 491,657 | $27.4M | 0.16% | +319,708+185.9% | Added |
| Panagora Asset Management Inc | 408,268 | $22.8M | 0.14% | −889−0.2% | Reduced |
| Legal & General Group Plc | 397,265 | $22.2M | 0.01% | −16,035−3.9% | Reduced |
| Putnam Investments LLC | 381,681 | $21.3M | 0.03% | +162,146+73.9% | Added |
| Emerald Advisers, LLC | 364,279 | $20.3M | 0.98% | +75,033+25.9% | Added |
| Mirae Asset Global Investments Co., Ltd. | 345,844 | $19.3M | 0.04% | +66,779+23.9% | Added |
| FMR LLC | 313,252 | $17.5M | 0.00% | −238,812−43.3% | Reduced |
| Rhumbline Advisers | 312,351 | $17.4M | 0.02% | +386+0.1% | Added |
| Barclays PLC | 307,486 | $17.2M | 0.01% | +206,720+205.1% | Added |
| Maplelane Capital, LLC | 304,000 | $17.0M | 1.81% | −238,261−43.9% | Reduced |
| Schroder Investment Management Group | 303,549 | $16.9M | 0.03% | +94,378+45.1% | Added |
| Emerald Mutual Fund Advisers Trust | 295,566 | $16.5M | 1.00% | +57,103+23.9% | Added |
| Voya Investment Management LLC | 280,925 | $15.7M | 0.02% | +54,774+24.2% | Added |
| Artisan Partners Limited Partnership | 280,888 | $15.7M | 0.03% | +154,483+122.2% | Added |
| BNP Paribas Arbitrage, SA | 275,682 | $15.4M | 0.03% | +216,205+363.5% | Added |
| Citigroup Inc | 270,409 | $15.1M | 0.02% | +152,179+128.7% | Added |
| Penn Capital Management Co Inc | 268,561 | $15.0M | 1.54% | +68,498+34.2% | Added |
| New York State Common Retirement Fund | 259,019 | $14.5M | 0.02% | −10,491−3.9% | Reduced |
| AXA S.A. | 254,800 | $14.2M | 0.05% | +6,900+2.8% | Added |
| Natixis Advisors, L.P. | 246,343 | $13.7M | 0.04% | +7,375+3.1% | Added |
| First Trust Advisors LP | 241,427 | $13.5M | 0.02% | +121,382+101.1% | Added |
| Mesirow Institutional Investment Management, Inc. | 240,656 | $13.4M | 1.36% | +69,895+40.9% | Added |
| Swiss National Bank | 239,300 | $13.4M | 0.01% | +2,300+1.0% | Added |
| Summit Partners Public Asset Management, LLC | 231,708 | $12.9M | 0.82% | +119,343+106.2% | Added |
| UBS Group AG | 227,776 | $12.7M | 0.01% | +95,362+72.0% | Added |
| Glenmede Trust Co NA | 226,318 | $12.6M | 0.07% | +7,922+3.6% | Added |
| Credit Suisse AG | 218,421 | $12.2M | 0.01% | −50,545−18.8% | Reduced |
| California Public Employees Retirement System | 215,853 | $12.0M | 0.01% | +52,445+32.1% | Added |
| Man Group plc | – | $11.8M | 0.04% | – | – |
| Royce & Associates LP | 209,661 | $11.7M | 0.12% | +13,454+6.9% | Added |
| D. E. Shaw & Co., Inc. | 207,310 | $11.6M | 0.02% | −412,482−66.6% | Reduced |
| SEI Investments Co | 206,405 | $11.5M | 0.02% | +3,974+2.0% | Added |
| Millennium Management LLC | 202,061 | $11.3M | 0.01% | −281,525−58.2% | Reduced |
| Barington Capital Group, L.P. | 200,100 | $11.2M | 16.02% | −50,000−20.0% | Reduced |
| Squarepoint Ops LLC | 192,088 | $10.7M | 0.05% | +192,088 | New |
| HighTower Advisors, LLC | 184,632 | $10.3M | 0.02% | +750.0% | Added |
| Westwood Holdings Group Inc. | 181,799 | $10.1M | 0.09% | −35,967−16.5% | Reduced |
| Amundi | 172,307 | $9.86M | 0.00% | −41,708−19.5% | Reduced |
| Epoch Investment Partners, Inc. | 173,087 | $9.66M | 0.06% | −34,837−16.8% | Reduced |
| Castleark Management LLC | 168,760 | $9.42M | 0.48% | +19,060+12.7% | Added |
| Primecap Management Co | 166,163 | $9.27M | 0.01% | −29,200−14.9% | Reduced |
| WCM Investment Management, LLC | 164,830 | $9.20M | 0.03% | +164,830 | New |
| Stephens Investment Management Group LLC | 164,794 | $9.19M | 0.15% | +164,794 | New |
| Alliancebernstein L.P. | 149,949 | $8.37M | 0.00% | −520.0% | Reduced |
| Citadel Advisors LLC | 137,751 | $7.69M | 0.01% | +126,506+1,125.0% | Added |
| Public Sector Pension Investment Board | 134,884 | $7.53M | 0.06% | −58,318−30.2% | Reduced |
| Prudential Financial Inc | 131,045 | $7.31M | 0.01% | −4,084−3.0% | Reduced |
| Wells Fargo & Company | 128,546 | $7.17M | 0.00% | −13,038−9.2% | Reduced |
| UBS Asset Management Americas Inc | 127,485 | $7.11M | 0.00% | −6,910−5.1% | Reduced |
| Crestline Management, LP | 127,027 | $7.09M | 0.85% | −19,600−13.4% | Reduced |
| Great West Life Assurance Co | 126,080 | $7.03M | 0.02% | +1,257+1.0% | Added |
| Zweig-DiMenna Associates LLC | 125,750 | $7.02M | 0.84% | +65,000+107.0% | Added |
| Jupiter Asset Management Ltd | 124,518 | $6.95M | 0.08% | −154,017−55.3% | Reduced |
| Susquehanna International Group, LLP | 123,239 | $6.88M | 0.01% | −37,670−23.4% | Reduced |
| California State Teachers Retirement System | 120,330 | $6.71M | 0.01% | −11,734−8.9% | Reduced |
| Capital Fund Management S.A. | 115,134 | $6.42M | 0.09% | +90,069+359.3% | Added |
| State of Wisconsin Investment Board | 114,394 | $6.38M | 0.02% | +22,515+24.5% | Added |
| Jane Street Group, LLC | 100,370 | $5.60M | 0.01% | +19,926+24.8% | Added |
| Thrivent Financial for Lutherans | 99,833 | $5.57M | 0.01% | −4,291−4.1% | Reduced |
| LPL Financial LLC | 97,005 | $5.41M | 0.00% | −5,393−5.3% | Reduced |
| Axiom Investors LLC | 95,678 | $5.34M | 0.08% | −28,392−22.9% | Reduced |
| Thornburg Investment Management Inc | 94,030 | $5.25M | 0.09% | +16,784+21.7% | Added |
| Texas Permanent School Fund | 92,683 | $5.17M | 0.05% | −3,153−3.3% | Reduced |
| Stifel Financial Corp | 89,477 | $4.99M | 0.01% | −1,601−1.8% | Reduced |
| Russell Investments Group, Ltd. | 89,479 | $4.99M | 0.01% | −9,735−9.8% | Reduced |
| New York State Teachers Retirement System | 83,847 | $4.68M | 0.01% | +13,400+19.0% | Added |
| Walleye Capital LLC | 83,234 | $4.64M | 0.07% | +83,234 | New |