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; 621 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 | 621 | $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 |
|---|---|---|---|---|---|
| Los Angeles Capital Management LLC | 106,446 | $6.83M | 0.03% | −2,365−2.2% | Reduced |
| UBS Asset Management Americas Inc | 134,395 | $6.89M | 0.00% | 00.0% | Unchanged |
| Summit Partners Public Asset Management, LLC | 112,365 | $7.21M | 0.37% | −149,453−57.1% | Reduced |
| Citigroup Inc | 118,230 | $7.59M | 0.01% | +44,966+61.4% | Added |
| First Trust Advisors LP | 120,045 | $7.70M | 0.01% | +2,763+2.4% | Added |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 123,035 | $7.90M | 0.06% | +9,230+8.1% | Added |
| Axiom Investors LLC | 124,070 | $7.96M | 0.12% | +124,070 | New |
| Great West Life Assurance Co | 124,823 | $8.02M | 0.02% | +22,575+22.1% | Added |
| Artisan Partners Limited Partnership | 126,405 | $8.11M | 0.01% | +126,405 | New |
| AQR Capital Management LLC | 130,987 | $8.41M | 0.02% | +94,552+259.5% | Added |
| California State Teachers Retirement System | 132,064 | $8.47M | 0.01% | −2,130−1.6% | Reduced |
| UBS Group AG | 132,414 | $8.50M | 0.00% | +21,960+19.9% | Added |
| Prudential Financial Inc | 135,129 | $8.67M | 0.01% | +29,456+27.9% | Added |
| Wells Fargo & Company | 141,584 | $9.09M | 0.00% | +30,438+27.4% | Added |
| Crestline Management, LP | 146,627 | $9.41M | 1.02% | −98,525−40.2% | Reduced |
| Castleark Management LLC | 149,700 | $9.61M | 0.44% | +83,430+125.9% | Added |
| Alliancebernstein L.P. | 150,001 | $9.63M | 0.00% | +3,069+2.1% | Added |
| Walleye Trading LLC | 159,186 | $10.2M | 0.53% | +49,291+44.9% | Added |
| Susquehanna International Group, LLP | 160,909 | $10.3M | 0.02% | +99,231+160.9% | Added |
| California Public Employees Retirement System | 163,408 | $10.5M | 0.01% | +49,659+43.7% | Added |
| Mesirow Institutional Investment Management, Inc. | 170,761 | $11.0M | 1.13% | −26,970−13.6% | Reduced |
| Eagle Asset Management Inc | 171,949 | $11.0M | 0.06% | −9,740−5.4% | Reduced |
| Glenmede Trust Co NA | 218,396 | $11.4M | 0.06% | +398+0.2% | Added |
| HighTower Advisors, LLC | 184,557 | $11.8M | 0.02% | +2,693+1.5% | Added |
| Assenagon Asset Management S.A. | 186,493 | $12.0M | 0.05% | +180,146+2,838.3% | Added |
| Public Sector Pension Investment Board | 193,202 | $12.4M | 0.09% | +4,166+2.2% | Added |
| Primecap Management Co | 195,363 | $12.5M | 0.01% | −43,300−18.1% | Reduced |
| Royce & Associates LP | 196,207 | $12.6M | 0.12% | −5,445−2.7% | Reduced |
| Penn Capital Management Co Inc | 200,063 | $12.8M | 1.25% | −59,743−23.0% | Reduced |
| SEI Investments Co | 202,431 | $13.0M | 0.02% | +34,495+20.5% | Added |
| Bank of America Corp | 203,198 | $13.0M | 0.00% | −40,194−16.5% | Reduced |
| Epoch Investment Partners, Inc. | 207,924 | $13.3M | 0.08% | −114,408−35.5% | Reduced |
| Schroder Investment Management Group | 209,171 | $13.4M | 0.02% | +121,246+137.9% | Added |
| Amundi | 214,015 | $13.7M | 0.01% | +199,288+1,353.2% | Added |
| Westwood Holdings Group Inc. | 217,766 | $14.0M | 0.13% | −1,297,768−85.6% | Reduced |
| Putnam Investments LLC | 219,535 | $14.1M | 0.02% | −910−0.4% | Reduced |
| Voya Investment Management LLC | 226,151 | $14.5M | 0.02% | +162,397+254.7% | Added |
| Swiss National Bank | 237,000 | $15.2M | 0.01% | +5,000+2.2% | Added |
| Emerald Mutual Fund Advisers Trust | 238,463 | $15.3M | 0.83% | +202,077+555.4% | Added |
| Natixis Advisors, L.P. | 238,968 | $15.3M | 0.05% | +6,608+2.8% | Added |
| AXA S.A. | 247,900 | $15.9M | 0.05% | −19,058−7.1% | Reduced |
| Barington Capital Group, L.P. | 250,100 | $16.0M | 26.77% | −280,000−52.8% | Reduced |
| Credit Suisse AG | 268,966 | $17.3M | 0.02% | +60,011+28.7% | Added |
| New York State Common Retirement Fund | 269,510 | $17.3M | 0.02% | −12,975−4.6% | Reduced |
| Great Lakes Advisors, LLC | 277,880 | $17.8M | 0.18% | +269,173+3,091.5% | Added |
| Jupiter Asset Management Ltd | 278,535 | $17.9M | 0.20% | +278,535 | New |
| Mirae Asset Global Investments Co., Ltd. | 279,065 | $17.9M | 0.04% | +13,719+5.2% | Added |
| Emerald Advisers, LLC | 289,246 | $18.6M | 0.81% | +237,783+462.0% | Added |
| Goldman Sachs Group Inc | 300,215 | $19.3M | 0.00% | −75,293−20.1% | Reduced |
| Renaissance Technologies LLC | 311,686 | $20.0M | 0.03% | +53,700+20.8% | Added |
| Rhumbline Advisers | 311,965 | $20.0M | 0.02% | −4,124−1.3% | Reduced |
| Park West Asset Management LLC | 335,000 | $21.5M | 1.88% | −165,000−33.0% | Reduced |
| Macquarie Group Ltd | 344,902 | $22.1M | 0.03% | +344,902 | New |
| Fred Alger Management, LLC | 353,441 | $22.7M | 0.12% | +353,441 | New |
| Twin Tree Management, LP | 358,789 | $23.0M | 0.47% | +296,755+478.4% | Added |
| Man Group plc | 361,064 | $23.2M | 0.07% | – | – |
| Arrowstreet Capital, Limited Partnership | 367,095 | $23.6M | 0.03% | −125,184−25.4% | Reduced |
| Panagora Asset Management Inc | 409,157 | $26.3M | 0.15% | −18,421−4.3% | Reduced |
| Legal & General Group Plc | 413,300 | $26.5M | 0.01% | +98,879+31.4% | Added |
| Schonfeld Strategic Advisors LLC | 455,382 | $29.2M | 0.25% | +455,382 | New |
| Millennium Management LLC | 483,586 | $31.0M | 0.03% | −305,890−38.7% | Reduced |
| Maplelane Capital, LLC | 542,261 | $34.8M | 2.96% | +542,261 | New |
| FMR LLC | 552,064 | $35.4M | 0.00% | −162,450−22.7% | Reduced |
| Driehaus Capital Management LLC | 607,623 | $39.0M | 0.49% | +36,179+6.3% | Added |
| D. E. Shaw & Co., Inc. | 619,792 | $39.8M | 0.06% | −450,807−42.1% | Reduced |
| Swedbank AB | 650,000 | $41.7M | 0.07% | +350,000+116.7% | Added |
| First Republic Investment Management, Inc. | 682,918 | $43.8M | 0.23% | −54,404−7.4% | Reduced |
| Price T Rowe Associates Inc | 702,154 | $45.1M | 0.01% | +646,402+1,159.4% | Added |
| Whale Rock Capital Management LLC | 763,782 | $49.0M | 0.84% | +3120.0% | Added |
| Charles Schwab Investment Management Inc | 836,334 | $53.7M | 0.02% | +24,008+3.0% | Added |
| Silvercrest Asset Management Group LLC | 874,049 | $56.1M | 0.40% | −291,291−25.0% | Reduced |
| Principal Financial Group Inc | 939,302 | $60.3M | 0.04% | +275,774+41.6% | Added |
| Norges Bank | 1,001,195 | $64.2M | 0.01% | +12,086+1.2% | Added |
| Captrust Financial Advisors | 1,026,190 | $65.8M | 0.26% | −319,280−23.7% | Reduced |
| Bank of New York Mellon Corp | 1,126,226 | $72.3M | 0.02% | +100,884+9.8% | Added |
| Vaughan Nelson Investment Management, L.P. | 1,177,737 | $75.6M | 0.84% | +51,187+4.5% | Added |
| Hood River Capital Management LLC | 1,217,969 | $78.2M | 2.33% | +19,675+1.6% | Added |
| Polar Capital Holdings Plc | 1,309,113 | $84.0M | 0.58% | +1,309,113 | New |
| Loomis Sayles & Co L P | 1,458,011 | $93.6M | 0.15% | −537,161−26.9% | Reduced |
| Morgan Stanley | 1,508,344 | $96.8M | 0.01% | +525,224+53.4% | Added |
| Northern Trust Corp | 1,509,422 | $96.9M | 0.02% | −71,299−4.5% | Reduced |
| Nuveen Asset Management, LLC | 1,532,035 | $98.3M | 0.03% | +488,598+46.8% | Added |
| Wellington Management Group LLP | 1,871,798 | $120.1M | 0.02% | −594,235−24.1% | Reduced |
| Invesco Ltd. | 1,889,347 | $121.2M | 0.03% | +961,863+103.7% | Added |
| Lord, Abbett & Co. LLC | 2,041,507 | $131.0M | 0.45% | +114,949+6.0% | Added |
| Geode Capital Management, LLC | 2,224,659 | $142.8M | 0.02% | +110,051+5.2% | Added |
| Dimensional Fund Advisors LP | 2,386,158 | $153.1M | 0.05% | −400,730−14.4% | Reduced |
| Ameriprise Financial Inc | 2,619,211 | $168.1M | 0.05% | −1,618,957−38.2% | Reduced |
| Neuberger Berman Group LLC | 2,795,716 | $178.9M | 0.16% | −737,061−20.9% | Reduced |
| JPMorgan Chase & Co | 4,177,657 | $268.1M | 0.03% | +421,143+11.2% | Added |
| State Street Corp | 4,384,088 | $281.3M | 0.01% | −178,067−3.9% | Reduced |
| Vanguard Group Inc | 12,819,479 | $822.6M | 0.02% | +150,432+1.2% | Added |
| BlackRock Inc. | 18,383,271 | $1.18B | 0.03% | +518,961+2.9% | Added |
| CloudAlpha Capital Management Limited/Hong Kong | 0 | $0 | 0.00% | −272,700−100.0% | Sold out |
| Voloridge Investment Management, LLC | 0 | $0 | 0.00% | −216,563−100.0% | Sold out |
| Cinctive Capital Management LP | 0 | $0 | 0.00% | −149,230−100.0% | Sold out |
| Winton Group Ltd | 0 | $0 | 0.00% | −70,722−100.0% | Sold out |
| Squarepoint Ops LLC | 0 | $0 | 0.00% | −54,751−100.0% | Sold out |
| HRT Financial LP | 0 | $0 | 0.00% | −42,737−100.0% | Sold out |
| Group One Trading, L.P. | 0 | $0 | 0.00% | −31,709−100.0% | Sold out |