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, Q2 2023
Institutional positions in Rambus Inc as of Jun 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
- 393
- +58 vs. Q1 2023
- Shares held
- 95.7M
- +2.08M (+2.2%) vs. Q1 2023
- Total value
- $6.14B
- +$1.33B (+27.5%) vs. Q1 2023
- New holders
- 95
- 139 more added
- Sold out
- 37
- 128 more reduced
2 institutions that held it in Q1 2023 haven't filed for Q2 2023 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 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, Q2 2023
Shares, value and share of portfolio for each institution holding Rambus Inc; share changes are against Q1 2023.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| BlackRock Inc. | 18,383,271 | $1.18B | 0.03% | +518,961+2.9% | Added |
| Vanguard Group Inc | 12,819,479 | $822.6M | 0.02% | +150,432+1.2% | Added |
| State Street Corp | 4,384,088 | $281.3M | 0.01% | −178,067−3.9% | Reduced |
| JPMorgan Chase & Co | 4,177,657 | $268.1M | 0.03% | +421,143+11.2% | Added |
| Neuberger Berman Group LLC | 2,795,716 | $178.9M | 0.16% | −737,061−20.9% | Reduced |
| Ameriprise Financial Inc | 2,619,211 | $168.1M | 0.05% | −1,618,957−38.2% | Reduced |
| Dimensional Fund Advisors LP | 2,386,158 | $153.1M | 0.05% | −400,730−14.4% | Reduced |
| Geode Capital Management, LLC | 2,224,659 | $142.8M | 0.02% | +110,051+5.2% | Added |
| Lord, Abbett & Co. LLC | 2,041,507 | $131.0M | 0.45% | +114,949+6.0% | Added |
| Invesco Ltd. | 1,889,347 | $121.2M | 0.03% | +961,863+103.7% | Added |
| Wellington Management Group LLP | 1,871,798 | $120.1M | 0.02% | −594,235−24.1% | Reduced |
| Nuveen Asset Management, LLC | 1,532,035 | $98.3M | 0.03% | +488,598+46.8% | Added |
| Northern Trust Corp | 1,509,422 | $96.9M | 0.02% | −71,299−4.5% | Reduced |
| Morgan Stanley | 1,508,344 | $96.8M | 0.01% | +525,224+53.4% | Added |
| Loomis Sayles & Co L P | 1,458,011 | $93.6M | 0.15% | −537,161−26.9% | Reduced |
| Polar Capital Holdings Plc | 1,309,113 | $84.0M | 0.58% | +1,309,113 | New |
| Hood River Capital Management LLC | 1,217,969 | $78.2M | 2.33% | +19,675+1.6% | Added |
| Vaughan Nelson Investment Management, L.P. | 1,177,737 | $75.6M | 0.84% | +51,187+4.5% | Added |
| Bank of New York Mellon Corp | 1,126,226 | $72.3M | 0.02% | +100,884+9.8% | Added |
| Captrust Financial Advisors | 1,026,190 | $65.8M | 0.26% | −319,280−23.7% | Reduced |
| Norges Bank | 1,001,195 | $64.2M | 0.01% | +12,086+1.2% | Added |
| Principal Financial Group Inc | 939,302 | $60.3M | 0.04% | +275,774+41.6% | Added |
| Silvercrest Asset Management Group LLC | 874,049 | $56.1M | 0.40% | −291,291−25.0% | Reduced |
| Charles Schwab Investment Management Inc | 836,334 | $53.7M | 0.02% | +24,008+3.0% | Added |
| Whale Rock Capital Management LLC | 763,782 | $49.0M | 0.84% | +3120.0% | Added |
| Price T Rowe Associates Inc | 702,154 | $45.1M | 0.01% | +646,402+1,159.4% | Added |
| First Republic Investment Management, Inc. | 682,918 | $43.8M | 0.23% | −54,404−7.4% | Reduced |
| Swedbank AB | 650,000 | $41.7M | 0.07% | +350,000+116.7% | Added |
| D. E. Shaw & Co., Inc. | 619,792 | $39.8M | 0.06% | −450,807−42.1% | Reduced |
| Driehaus Capital Management LLC | 607,623 | $39.0M | 0.49% | +36,179+6.3% | Added |
| FMR LLC | 552,064 | $35.4M | 0.00% | −162,450−22.7% | Reduced |
| Maplelane Capital, LLC | 542,261 | $34.8M | 2.96% | +542,261 | New |
| Millennium Management LLC | 483,586 | $31.0M | 0.03% | −305,890−38.7% | Reduced |
| Schonfeld Strategic Advisors LLC | 455,382 | $29.2M | 0.25% | +455,382 | New |
| Legal & General Group Plc | 413,300 | $26.5M | 0.01% | +98,879+31.4% | Added |
| Panagora Asset Management Inc | 409,157 | $26.3M | 0.15% | −18,421−4.3% | Reduced |
| Arrowstreet Capital, Limited Partnership | 367,095 | $23.6M | 0.03% | −125,184−25.4% | Reduced |
| Man Group plc | 361,064 | $23.2M | 0.07% | – | – |
| Twin Tree Management, LP | 358,789 | $23.0M | 0.47% | +296,755+478.4% | Added |
| Fred Alger Management, LLC | 353,441 | $22.7M | 0.12% | +353,441 | New |
| Macquarie Group Ltd | 344,902 | $22.1M | 0.03% | +344,902 | New |
| Park West Asset Management LLC | 335,000 | $21.5M | 1.88% | −165,000−33.0% | Reduced |
| Rhumbline Advisers | 311,965 | $20.0M | 0.02% | −4,124−1.3% | Reduced |
| Renaissance Technologies LLC | 311,686 | $20.0M | 0.03% | +53,700+20.8% | Added |
| Goldman Sachs Group Inc | 300,215 | $19.3M | 0.00% | −75,293−20.1% | Reduced |
| Emerald Advisers, LLC | 289,246 | $18.6M | 0.81% | +237,783+462.0% | Added |
| Mirae Asset Global Investments Co., Ltd. | 279,065 | $17.9M | 0.04% | +13,719+5.2% | Added |
| Jupiter Asset Management Ltd | 278,535 | $17.9M | 0.20% | +278,535 | New |
| Great Lakes Advisors, LLC | 277,880 | $17.8M | 0.18% | +269,173+3,091.5% | Added |
| New York State Common Retirement Fund | 269,510 | $17.3M | 0.02% | −12,975−4.6% | Reduced |
| Credit Suisse AG | 268,966 | $17.3M | 0.02% | +60,011+28.7% | Added |
| Barington Capital Group, L.P. | 250,100 | $16.0M | 26.77% | −280,000−52.8% | Reduced |
| AXA S.A. | 247,900 | $15.9M | 0.05% | −19,058−7.1% | Reduced |
| Natixis Advisors, L.P. | 238,968 | $15.3M | 0.05% | +6,608+2.8% | Added |
| Emerald Mutual Fund Advisers Trust | 238,463 | $15.3M | 0.83% | +202,077+555.4% | Added |
| Swiss National Bank | 237,000 | $15.2M | 0.01% | +5,000+2.2% | Added |
| Voya Investment Management LLC | 226,151 | $14.5M | 0.02% | +162,397+254.7% | Added |
| Putnam Investments LLC | 219,535 | $14.1M | 0.02% | −910−0.4% | Reduced |
| Westwood Holdings Group Inc. | 217,766 | $14.0M | 0.13% | −1,297,768−85.6% | Reduced |
| Amundi | 214,015 | $13.7M | 0.01% | +199,288+1,353.2% | Added |
| Schroder Investment Management Group | 209,171 | $13.4M | 0.02% | +121,246+137.9% | Added |
| Epoch Investment Partners, Inc. | 207,924 | $13.3M | 0.08% | −114,408−35.5% | Reduced |
| Bank of America Corp | 203,198 | $13.0M | 0.00% | −40,194−16.5% | Reduced |
| SEI Investments Co | 202,431 | $13.0M | 0.02% | +34,495+20.5% | Added |
| Penn Capital Management Co Inc | 200,063 | $12.8M | 1.25% | −59,743−23.0% | Reduced |
| Royce & Associates LP | 196,207 | $12.6M | 0.12% | −5,445−2.7% | Reduced |
| Primecap Management Co | 195,363 | $12.5M | 0.01% | −43,300−18.1% | Reduced |
| Public Sector Pension Investment Board | 193,202 | $12.4M | 0.09% | +4,166+2.2% | Added |
| Assenagon Asset Management S.A. | 186,493 | $12.0M | 0.05% | +180,146+2,838.3% | Added |
| HighTower Advisors, LLC | 184,557 | $11.8M | 0.02% | +2,693+1.5% | Added |
| Glenmede Trust Co NA | 218,396 | $11.4M | 0.06% | +398+0.2% | Added |
| Eagle Asset Management Inc | 171,949 | $11.0M | 0.06% | −9,740−5.4% | Reduced |
| Mesirow Institutional Investment Management, Inc. | 170,761 | $11.0M | 1.13% | −26,970−13.6% | Reduced |
| California Public Employees Retirement System | 163,408 | $10.5M | 0.01% | +49,659+43.7% | Added |
| Susquehanna International Group, LLP | 160,909 | $10.3M | 0.02% | +99,231+160.9% | Added |
| Walleye Trading LLC | 159,186 | $10.2M | 0.53% | +49,291+44.9% | Added |
| Alliancebernstein L.P. | 150,001 | $9.63M | 0.00% | +3,069+2.1% | Added |
| Castleark Management LLC | 149,700 | $9.61M | 0.44% | +83,430+125.9% | Added |
| Crestline Management, LP | 146,627 | $9.41M | 1.02% | −98,525−40.2% | Reduced |
| Wells Fargo & Company | 141,584 | $9.09M | 0.00% | +30,438+27.4% | Added |
| Prudential Financial Inc | 135,129 | $8.67M | 0.01% | +29,456+27.9% | Added |
| UBS Group AG | 132,414 | $8.50M | 0.00% | +21,960+19.9% | Added |
| California State Teachers Retirement System | 132,064 | $8.47M | 0.01% | −2,130−1.6% | Reduced |
| AQR Capital Management LLC | 130,987 | $8.41M | 0.02% | +94,552+259.5% | Added |
| Artisan Partners Limited Partnership | 126,405 | $8.11M | 0.01% | +126,405 | New |
| Great West Life Assurance Co | 124,823 | $8.02M | 0.02% | +22,575+22.1% | Added |
| Axiom Investors LLC | 124,070 | $7.96M | 0.12% | +124,070 | New |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 123,035 | $7.90M | 0.06% | +9,230+8.1% | Added |
| First Trust Advisors LP | 120,045 | $7.70M | 0.01% | +2,763+2.4% | Added |
| Citigroup Inc | 118,230 | $7.59M | 0.01% | +44,966+61.4% | Added |
| Summit Partners Public Asset Management, LLC | 112,365 | $7.21M | 0.37% | −149,453−57.1% | Reduced |
| UBS Asset Management Americas Inc | 134,395 | $6.89M | 0.00% | 00.0% | Unchanged |
| Los Angeles Capital Management LLC | 106,446 | $6.83M | 0.03% | −2,365−2.2% | Reduced |
| Thrivent Financial for Lutherans | 104,124 | $6.68M | 0.02% | −126,094−54.8% | Reduced |
| LPL Financial LLC | 102,398 | $6.57M | 0.00% | +11,628+12.8% | Added |
| Barclays PLC | 100,766 | $6.47M | 0.00% | +9,671+10.6% | Added |
| Russell Investments Group, Ltd. | 99,214 | $6.36M | 0.01% | −174,370−63.7% | Reduced |
| Texas Permanent School Fund | 95,836 | $6.15M | 0.06% | −554−0.6% | Reduced |
| Bridgeway Capital Management, LLC | 92,200 | $5.92M | 0.14% | 00.0% | Unchanged |
| State of Wisconsin Investment Board | 91,879 | $5.90M | 0.02% | −16,734−15.4% | Reduced |