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, Q4 2025
Institutional positions in Rambus Inc as of Dec 31, 2025. 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
- 554
- +50 vs. Q3 2025
- Shares held
- 99.8M
- +1.42M (+1.4%) vs. Q3 2025
- Total value
- $9.18B
- −$1.08B (−10.5%) vs. Q3 2025
- New holders
- 103
- 190 more added
- Sold out
- 53
- 195 more reduced
9 institutions that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 2025: 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, Q4 2025
Shares, value and share of portfolio for each institution holding Rambus Inc; share changes are against Q3 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| HSBC Holdings PLC | 20,434 | $1.89M | 0.00% | +7,733+60.9% | Added |
| Pacer Advisors, Inc. | 20,459 | $1.88M | 0.00% | +1,595+8.5% | Added |
| Mariner, LLC | 19,358 | $1.78M | 0.00% | −513−2.6% | Reduced |
| Aurora Investment Counsel | 19,198 | $1.76M | 0.93% | −4,400−18.6% | Reduced |
| Tealwood Asset Management Inc | 19,014 | $1.75M | 0.78% | −510−2.6% | Reduced |
| Park Avenue Securities LLC | 18,860 | $1.73M | 0.01% | −527−2.7% | Reduced |
| B. Metzler seel. Sohn & Co. AG | 18,658 | $1.71M | 0.01% | −13,074−41.2% | Reduced |
| Cambiar Investors LLC | 18,494 | $1.70M | 0.08% | −5,253−22.1% | Reduced |
| D. E. Shaw & Co., Inc. | 18,491 | $1.70M | 0.00% | −67,612−78.5% | Reduced |
| Diversify Wealth Management, LLC | 17,783 | $1.70M | 0.08% | +1,030+6.1% | Added |
| State of Alaska, Department of Revenue | 18,476 | $1.70M | 0.02% | +6,901+59.6% | Added |
| Gould Capital, LLC | 18,387 | $1.69M | 1.04% | +448+2.5% | Added |
| Great Lakes Advisors, LLC | 18,224 | $1.67M | 0.01% | −195−1.1% | Reduced |
| Gotham Asset Management, LLC | 17,785 | $1.63M | 0.01% | +14,480+438.1% | Added |
| PEAK6 LLC | 17,648 | $1.62M | 0.04% | +17,648 | New |
| Epoch Investment Partners, Inc. | 17,603 | $1.62M | 0.01% | −2,561−12.7% | Reduced |
| Envestnet Portfolio Solutions, Inc. | 17,075 | $1.57M | 0.01% | +280+1.7% | Added |
| Horizon Investments, LLC | 17,024 | $1.56M | 0.02% | −1,453−7.9% | Reduced |
| Cambridge Investment Research Advisors, Inc. | 17,021 | $1.56M | 0.00% | −1,753−9.3% | Reduced |
| Penn Capital Management Co Inc | 16,705 | $1.56M | 0.12% | −135,120−89.0% | Reduced |
| Marshall Wace, LLP | 16,300 | $1.50M | 0.00% | +16,300 | New |
| CWM, LLC | 16,185 | $1.49M | 0.00% | +1,341+9.0% | Added |
| GF Fund Management Co. Ltd. | 15,975 | $1.47M | 0.03% | −69,318−81.3% | Reduced |
| FORA Capital, LLC | 15,846 | $1.46M | 0.18% | +9,590+153.3% | Added |
| Credit Agricole S A | 15,114 | $1.39M | 0.00% | 00.0% | Unchanged |
| Quadrant Capital Group LLC | 14,876 | $1.37M | 0.04% | +87+0.6% | Added |
| First Citizens Bank & Trust Co | 14,813 | $1.36M | 0.03% | −77−0.5% | Reduced |
| Virginia Retirement Systems Et Al | 14,710 | $1.35M | 0.01% | +2,550+21.0% | Added |
| Diversify Advisory Services, LLC | 12,293 | $1.33M | 0.04% | +516+4.4% | Added |
| Wesbanco Bank Inc | 14,300 | $1.31M | 0.04% | −8,509−37.3% | Reduced |
| Campbell & CO Investment Adviser LLC | 14,091 | $1.29M | 0.06% | +14,091 | New |
| Susquehanna International Group, LLP | 13,834 | $1.27M | 0.00% | +3,485+33.7% | Added |
| Moody National Bank Trust Division | 13,785 | $1.27M | 0.12% | −8,190−37.3% | Reduced |
| Cookson Peirce & Co Inc | 13,607 | $1.25M | 0.05% | +13,607 | New |
| Xponance, Inc. | 13,212 | $1.21M | 0.01% | −2,093−13.7% | Reduced |
| The PNC Financial Services Group, Inc. | 12,969 | $1.19M | 0.00% | +962+8.0% | Added |
| Entropy Technologies, LP | 12,810 | $1.18M | 0.06% | +12,810 | New |
| Kovitz Investment Group Partners, LLC | 12,789 | $1.18M | 0.03% | −2,928−18.6% | Reduced |
| Evergreen Capital Management LLC | 12,625 | $1.16M | 0.03% | +3,720+41.8% | Added |
| Amundi | 12,371 | $1.14M | 0.00% | +4,760+62.5% | Added |
| Jennison Associates LLC | 11,972 | $1.10M | 0.00% | +6,566+121.5% | Added |
| Bank of Montreal | 11,892 | $1.09M | 0.00% | −147−1.2% | Reduced |
| FIL Ltd | 11,774 | $1.08M | 0.00% | +11,774 | New |
| Edgestream Partners, L.P. | 11,739 | $1.08M | 0.03% | −13,946−54.3% | Reduced |
| Portside Wealth Group, LLC | 11,515 | $1.06M | 0.14% | +1,297+12.7% | Added |
| Jump Financial, LLC | 11,499 | $1.06M | 0.01% | +11,499 | New |
| Gibbs Wealth Management | 11,113 | $1.04M | 0.25% | −551−4.7% | Reduced |
| Bailard, Inc. | 11,079 | $1.02M | 0.02% | −11−0.1% | Reduced |
| BNC Wealth Management, LLC | 11,068 | $1.02M | 0.26% | −500−4.3% | Reduced |
| Bokf, NA | 10,766 | $989.3K | 0.02% | −56−0.5% | Reduced |
| Public Employees Retirement Association of Colorado | 10,766 | $989.0K | 0.00% | 00.0% | Unchanged |
| Wealth Enhancement Advisory Services, LLC | 10,048 | $974.7K | 0.00% | +685+7.3% | Added |
| Encompass More Asset Management | 10,349 | $951.0K | 0.18% | +10,349 | New |
| Eventide Asset Management, LLC | 10,330 | $949.2K | 0.01% | 00.0% | Unchanged |
| Profund Advisors LLC | 10,200 | $937.3K | 0.03% | +360+3.7% | Added |
| Rakuten Investment Management, Inc. | 9,929 | $929.1K | 0.00% | −42,458−81.0% | Reduced |
| New York Life Investment Management LLC | 10,020 | $920.7K | 0.01% | +10,020 | New |
| Vestmark Advisory Solutions, Inc. | 9,992 | $918.2K | 0.01% | +7,963+392.5% | Added |
| FirstWave Capital Management LLC | 9,933 | $912.7K | 0.54% | +9,933 | New |
| GTS Securities LLC | 9,846 | $904.7K | 0.03% | +2,325+30.9% | Added |
| Intesa Sanpaolo S.p.A. | 9,639 | $895.6K | 0.06% | +9,639 | New |
| Novem Group | 9,632 | $885.1K | 0.10% | +9,632 | New |
| Sigma Planning Corp | 9,460 | $870.6K | 0.02% | +4,217+80.4% | Added |
| MML Investors Services, LLC | 9,249 | $849.9K | 0.00% | +1,915+26.1% | Added |
| Alliance Wealth Advisors, LLC | 9,204 | $845.8K | 0.18% | −3,731−28.8% | Reduced |
| Mercer Global Advisors Inc | 9,145 | $840.3K | 0.00% | +1,386+17.9% | Added |
| Federation des caisses Desjardins du Quebec | 8,917 | $819.4K | 0.00% | +8,487+1,973.7% | Added |
| Legato Capital Management LLC | 8,887 | $816.6K | 0.07% | −3,564−28.6% | Reduced |
| O'Shaughnessy Asset Management, LLC | 8,600 | $790.3K | 0.00% | +3,258+61.0% | Added |
| Kerr Financial Planning Corp | 7,950 | $786.6K | 1.07% | 00.0% | Unchanged |
| Private Advisor Group, LLC | 8,519 | $782.8K | 0.00% | +1,792+26.6% | Added |
| Nations Financial Group Inc, | 8,046 | $739.3K | 0.04% | −832−9.4% | Reduced |
| Norden Group LLC | 7,882 | $724.3K | 0.07% | +227+3.0% | Added |
| Swiss Life Asset Management Ltd | 7,823 | $718.9K | 0.00% | +2,937+60.1% | Added |
| Securian Asset Management, Inc | 7,821 | $718.7K | 0.03% | −237−2.9% | Reduced |
| Marshall Financial Group LLC | 7,801 | $716.8K | 0.14% | +7,801 | New |
| Keebeck Wealth Management, LLC | 7,780 | $714.9K | 0.08% | +173+2.3% | Added |
| Empirical Financial Services, LLC d.b.a. Empirical Wealth Management | 7,625 | $700.7K | 0.01% | +1,966+34.7% | Added |
| Oak Grove Capital LLC | 7,600 | $698.4K | 0.14% | +100+1.3% | Added |
| Sanctuary Advisors, LLC | 7,561 | $694.7K | 0.00% | −512−6.3% | Reduced |
| Sequoia Financial Advisors, LLC | 7,534 | $692.3K | 0.00% | +1,878+33.2% | Added |
| Sumitomo Mitsui Trust Holdings, Inc. | 7,460 | $685.5K | 0.00% | +506+7.3% | Added |
| Evolve Private Wealth, LLC | 7,339 | $674.4K | 0.04% | +7,339 | New |
| Financiere des Professionnels - Fonds d,investissement inc. | 7,317 | $672.4K | 0.04% | 00.0% | Unchanged |
| Fox Run Management, L.L.C. | 7,303 | $671.1K | 0.10% | +7,303 | New |
| Wiley Bros.-Aintree Capital, LLC | 7,241 | $666.6K | 0.00% | +5,255+264.6% | Added |
| Group One Trading, L.P. | 7,229 | $664.3K | 0.02% | −2,105−22.6% | Reduced |
| CIBC World Markets Corp | 7,143 | $656.4K | 0.00% | +7,143 | New |
| Lido Advisors, LLC | 6,344 | $648.9K | 0.00% | +48+0.8% | Added |
| China Universal Asset Management Co., Ltd. | 7,000 | $643.2K | 0.05% | −1,000−12.5% | Reduced |
| Yorktown Management & Research Co Inc | 7,000 | $643.2K | 0.51% | 00.0% | Unchanged |
| Diametric Capital, LP | 6,991 | $642.4K | 0.17% | +6,991 | New |
| Equitable Holdings, Inc. | 6,933 | $637.1K | 0.00% | +276+4.1% | Added |
| Harvest Fund Management Co., Ltd | 6,938 | $637.0K | 0.02% | −2,950−29.8% | Reduced |
| Independent Financial Group, LLC | 6,895 | $633.6K | 0.01% | −4,836−41.2% | Reduced |
| Axq Capital, LP | 6,742 | $619.5K | 0.14% | +6,742 | New |
| RSM US Wealth Management LLC | 6,511 | $616.5K | 0.01% | −185−2.8% | Reduced |
| Brinker Capital Investments, LLC | 6,706 | $616.2K | 0.00% | +38+0.6% | Added |
| Kestra Private Wealth Services, LLC | 6,695 | $615.2K | 0.01% | +6,695 | New |
| OP Asset Management Ltd | 6,565 | $603.3K | 0.01% | −7,318−52.7% | Reduced |