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 2023
Institutional positions in Rambus Inc as of Mar 31, 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
- 337
- +36 vs. Q4 2022
- Shares held
- 93.7M
- +2.10M (+2.3%) vs. Q4 2022
- Total value
- $4.81B
- +$1.55B (+47.4%) vs. Q4 2022
- New holders
- 71
- 91 more added
- Sold out
- 35
- 136 more reduced
2 institutions that held it in Q4 2022 haven't filed for Q1 2023 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2022: 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 2023
Shares, value and share of portfolio for each institution holding Rambus Inc; share changes are against Q4 2022.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| E Fund Management Co., Ltd. | 5,775 | $296.0K | 0.02% | +5,775 | New |
| Xponance, Inc. | 6,193 | $317.5K | 0.00% | +72+1.2% | Added |
| Eqis Capital Management, Inc. | 6,300 | $323.0K | 0.04% | −3,262−34.1% | Reduced |
| The PNC Financial Services Group, Inc. | 6,306 | $323.2K | 0.00% | −55−0.9% | Reduced |
| Shelton Capital Management | 6,330 | $324.5K | 0.01% | 00.0% | Unchanged |
| Profund Advisors LLC | 6,332 | $324.6K | 0.02% | −430−6.4% | Reduced |
| Assenagon Asset Management S.A. | 6,347 | $325.3K | 0.00% | −160,998−96.2% | Reduced |
| Capital CS Group, LLC | 6,426 | $329.4K | 0.31% | +6,426 | New |
| Evergreen Capital Management LLC | 6,759 | $346.5K | 0.02% | +485+7.7% | Added |
| Sequoia Financial Advisors, LLC | 6,874 | $352.4K | 0.01% | +531+8.4% | Added |
| Woodline Partners LP | 6,958 | $356.7K | 0.01% | +6,958 | New |
| MML Investors Services, LLC | 7,254 | $372.0K | 0.00% | −36−0.5% | Reduced |
| Buckingham Strategic Partners | 7,473 | $383.1K | 0.02% | −419−5.3% | Reduced |
| Mitsubishi UFJ Trust & Banking Corp | 7,537 | $386.3K | 0.00% | −11,770−61.0% | Reduced |
| Harvest Fund Management Co., Ltd | 7,918 | $406.0K | 0.09% | −4,483−36.2% | Reduced |
| Mercer Global Advisors Inc | 7,969 | $408.0K | 0.00% | +803+11.2% | Added |
| JustInvest LLC | 7,973 | $408.7K | 0.01% | +7,973 | New |
| Crossmark Global Holdings, Inc. | 8,441 | $433.0K | 0.01% | −672−7.4% | Reduced |
| Kiwi Wealth Investments Limited Partnership | 8,459 | $433.6K | 0.03% | −13,318−61.2% | Reduced |
| CSS LLC | 8,500 | $435.7K | 0.03% | +8,500 | New |
| Meritage Portfolio Management | 8,499 | $436.0K | 0.03% | +354+4.3% | Added |
| Ameritas Investment Partners, Inc. | 8,585 | $440.1K | 0.02% | +31+0.4% | Added |
| Avantax Planning Partners, Inc. | 8,600 | $440.8K | 0.02% | 00.0% | Unchanged |
| CI Private Wealth, LLC | 8,696 | $445.8K | 0.00% | +8,696 | New |
| Great Lakes Advisors, LLC | 8,707 | $446.3K | 0.00% | −414,643−97.9% | Reduced |
| KBC Group NV | 8,999 | $461.0K | 0.00% | −640−6.6% | Reduced |
| Cambridge Investment Research Advisors, Inc. | 9,098 | $466.0K | 0.00% | −766−7.8% | Reduced |
| Seven Eight Capital, LP | 9,556 | $489.8K | 0.10% | +2,895+43.5% | Added |
| Truvestments Capital LLC | 9,566 | $490.4K | 0.26% | +2,284+31.4% | Added |
| MQS Management LLC | 9,811 | $502.9K | 0.32% | −41−0.4% | Reduced |
| New York Life Investment Management LLC | 9,904 | $507.7K | 0.01% | −7,886−44.3% | Reduced |
| Contravisory Investment Management, Inc. | 9,970 | $511.1K | 0.14% | −141−1.4% | Reduced |
| Verition Fund Management LLC | 10,010 | $513.1K | 0.01% | +10,010 | New |
| Cubist Systematic Strategies, LLC | 10,118 | $518.6K | 0.00% | −118,183−92.1% | Reduced |
| Mariner, LLC | 10,641 | $545.0K | 0.00% | −1,799−14.5% | Reduced |
| Cetera Advisor Networks LLC | 10,713 | $549.1K | 0.00% | −1,281−10.7% | Reduced |
| Inceptionr LLC | 10,718 | $549.4K | 0.18% | +10,718 | New |
| Janney Montgomery Scott LLC | 10,742 | $551.0K | 0.00% | +2,137+24.8% | Added |
| Balyasny Asset Management LLC | 10,955 | $561.6K | 0.00% | −17,340−61.3% | Reduced |
| Advisor Partners II, LLC | 11,028 | $565.3K | 0.03% | +274+2.5% | Added |
| Navellier & Associates Inc | 11,197 | $574.0K | 0.12% | +618+5.8% | Added |
| Engineers Gate Manager LP | 11,584 | $593.8K | 0.02% | −32,207−73.5% | Reduced |
| National Bank of Canada | 11,985 | $614.5K | 0.00% | +11,985 | New |
| Campbell & CO Investment Adviser LLC | 12,040 | $617.2K | 0.11% | −2,345−16.3% | Reduced |
| Fox Run Management, L.L.C. | 12,546 | $643.1K | 0.21% | +12,546 | New |
| Moors & Cabot, Inc. | 13,520 | $693.0K | 0.05% | −430−3.1% | Reduced |
| Amundi | 14,727 | $723.4K | 0.00% | +14,727 | New |
| BNC Wealth Management, LLC | 14,268 | $731.4K | 0.41% | −2,500−14.9% | Reduced |
| ExodusPoint Capital Management, LP | 14,322 | $734.0K | 0.01% | +8,387+141.3% | Added |
| Juncture Wealth Strategies, LLC | 14,392 | $737.7K | 0.36% | −10,114−41.3% | Reduced |
| Cipher Capital LP | 14,412 | $738.8K | 0.14% | −24,366−62.8% | Reduced |
| Hanseatic Management Services Inc | 14,699 | $753.0K | 1.69% | +476+3.3% | Added |
| Pictet Asset Management SA | 14,707 | $753.9K | 0.00% | +1,269+9.4% | Added |
| Duality Advisers, LP | 14,719 | $754.5K | 0.09% | −26,713−64.5% | Reduced |
| National Asset Management, Inc. | 15,483 | $793.7K | 0.02% | +15,483 | New |
| ProShare Advisors LLC | 15,515 | $795.3K | 0.00% | −1,373−8.1% | Reduced |
| Public Employees Retirement Association of Colorado | 15,619 | $801.0K | 0.00% | 00.0% | Unchanged |
| Robeco Institutional Asset Management B.V. | 15,685 | $804.0K | 0.00% | −9,423−37.5% | Reduced |
| Virtue Capital Management, LLC | 17,532 | $805.6K | 0.13% | −745−4.1% | Reduced |
| Prudential PLC | 15,758 | $807.8K | 0.01% | +15,758 | New |
| ARGA Investment Management, LP | 16,158 | $828.3K | 0.03% | −5,522−25.5% | Reduced |
| TrimTabs Asset Management, LLC | 16,341 | $837.6K | 0.45% | +2,120+14.9% | Added |
| Two Sigma Investments, LP | 16,700 | $856.0K | 0.00% | −72,888−81.4% | Reduced |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 17,456 | $894.8K | 0.00% | +1,182+7.3% | Added |
| Everence Capital Management Inc | 18,385 | $942.0K | 0.08% | 00.0% | Unchanged |
| Handelsbanken Fonder AB | 18,597 | $953.0K | 0.01% | 00.0% | Unchanged |
| TD Asset Management Inc | 18,900 | $968.8K | 0.00% | −24,900−56.8% | Reduced |
| Wolverine Trading, LLC | 19,734 | $997.0K | 0.03% | +19,734 | New |
| First Hawaiian Bank | 19,720 | $1.01M | 0.03% | −5,919−23.1% | Reduced |
| Diversified Trust Co | 20,190 | $1.03M | 0.04% | +781+4.0% | Added |
| Bank of Montreal | 20,487 | $1.05M | 0.00% | +2,351+13.0% | Added |
| JB Capital LLC | 20,898 | $1.07M | 0.10% | +589+2.9% | Added |
| Jennison Associates LLC | 21,204 | $1.09M | 0.00% | +21,204 | New |
| Mutual of America Capital Management LLC | 22,134 | $1.13M | 0.01% | −391−1.7% | Reduced |
| Ergoteles LLC | 22,148 | $1.14M | 0.04% | +22,148 | New |
| Capital Fund Management S.A. | 22,365 | $1.15M | 0.02% | −46,768−67.6% | Reduced |
| ETF Managers Group, LLC | 22,634 | $1.16M | 0.04% | +337+1.5% | Added |
| Raymond James & Associates | 23,017 | $1.18M | 0.00% | +23,017 | New |
| Creative Planning | 23,947 | $1.23M | 0.00% | −1,095−4.4% | Reduced |
| Jackson Creek Investment Advisors LLC | 25,313 | $1.30M | 0.54% | −60.0% | Reduced |
| Advisors Asset Management, Inc. | 25,560 | $1.31M | 0.03% | −26−0.1% | Reduced |
| American Century Companies Inc | 27,884 | $1.41M | 0.00% | +4,623+19.9% | Added |
| Truist Financial Corp | 27,492 | $1.41M | 0.00% | +54+0.2% | Added |
| Gotham Asset Management, LLC | 27,957 | $1.43M | 0.03% | −43,530−60.9% | Reduced |
| Graham Capital Management, L.P. | 28,030 | $1.44M | 0.05% | −22,405−44.4% | Reduced |
| Arizona State Retirement System | 31,144 | $1.60M | 0.01% | −44−0.1% | Reduced |
| ClariVest Asset Management LLC | 31,264 | $1.60M | 0.07% | +84+0.3% | Added |
| Yorktown Management & Research Co Inc | 31,500 | $1.61M | 1.74% | 00.0% | Unchanged |
| Group One Trading, L.P. | 31,709 | $1.63M | 0.08% | +24,733+354.5% | Added |
| Syntal Capital Partners, LLC | 32,405 | $1.66M | 0.61% | +32,405 | New |
| Penserra Capital Management LLC | 32,863 | $1.68M | 0.03% | +32,863 | New |
| Ensign Peak Advisors, Inc | 32,917 | $1.69M | 0.00% | +4,850+17.3% | Added |
| STRS Ohio | 33,200 | $1.70M | 0.01% | −2,400−6.7% | Reduced |
| Guggenheim Capital LLC | 34,481 | $1.77M | 0.01% | +6,030+21.2% | Added |
| Mackenzie Financial Corp | 34,486 | $1.77M | 0.00% | +13,407+63.6% | Added |
| Oregon Public Employees Retirement Fund | 34,689 | $1.78M | 0.02% | −1,091−3.0% | Reduced |
| State Board of Administration of Florida Retirement System | 35,143 | $1.80M | 0.00% | 00.0% | Unchanged |
| Centiva Capital, LP | 35,496 | $1.82M | 0.10% | +11,988+51.0% | Added |
| Victory Capital Management Inc | 35,664 | $1.83M | 0.00% | −39,624−52.6% | Reduced |
| Caption Management, LLC | 35,744 | $1.83M | 0.39% | +35,744 | New |