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, Q3 2025
Institutional positions in Rambus Inc as of Sep 30, 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
- 513
- +62 vs. Q2 2025
- Shares held
- 98.8M
- +3.82M (+4.0%) vs. Q2 2025
- Total value
- $10.3B
- +$4.21B (+69.3%) vs. Q2 2025
- New holders
- 123
- 169 more added
- Sold out
- 61
- 163 more reduced
8 institutions that held it in Q2 2025 haven't filed for Q3 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q2 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, Q3 2025
Shares, value and share of portfolio for each institution holding Rambus Inc; share changes are against Q2 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Tealwood Asset Management Inc | 19,524 | $2.03M | 0.82% | −936−4.6% | Reduced |
| Park Avenue Securities LLC | 19,387 | $2.02M | 0.02% | −2,510−11.5% | Reduced |
| Zacks Investment Management | 19,110 | $1.99M | 0.02% | +1,182+6.6% | Added |
| Pacer Advisors, Inc. | 18,864 | $1.97M | 0.01% | +13,336+241.2% | Added |
| Cambridge Investment Research Advisors, Inc. | 18,774 | $1.96M | 0.01% | +5,672+43.3% | Added |
| Point72 Asia (Singapore) Pte. Ltd. | 18,591 | $1.94M | 0.30% | +18,591 | New |
| Illinois Municipal Retirement Fund | 18,495 | $1.93M | 0.02% | +9,190+98.8% | Added |
| Horizon Investments, LLC | 18,477 | $1.93M | 0.03% | +9,319+101.8% | Added |
| Great Lakes Advisors, LLC | 18,419 | $1.92M | 0.02% | −509−2.7% | Reduced |
| Mackenzie Financial Corp | 18,413 | $1.92M | 0.00% | −14,184−43.5% | Reduced |
| Gould Capital, LLC | 17,939 | $1.87M | 1.16% | +547+3.1% | Added |
| Diversify Wealth Management, LLC | 16,753 | $1.77M | 0.10% | +474+2.9% | Added |
| Envestnet Portfolio Solutions, Inc. | 16,795 | $1.75M | 0.01% | −152−0.9% | Reduced |
| Nicholas Investment Partners, LP | 16,630 | $1.73M | 0.13% | +16,630 | New |
| Elo Mutual Pension Insurance Co | 16,462 | $1.72M | 0.03% | +4,682+39.7% | Added |
| Toroso Investments, LLC | 16,334 | $1.70M | 0.01% | +4,682+40.2% | Added |
| Cinctive Capital Management LP | 16,315 | $1.70M | 0.08% | −49,362−75.2% | Reduced |
| Kovitz Investment Group Partners, LLC | 15,717 | $1.64M | 0.01% | −1,002−6.0% | Reduced |
| Xponance, Inc. | 15,305 | $1.59M | 0.01% | −163−1.1% | Reduced |
| Credit Agricole S A | 15,114 | $1.57M | 0.01% | +15,114 | New |
| Pictet Asset Management Holding SA | 14,905 | $1.55M | 0.00% | −2,843−16.0% | Reduced |
| First Citizens Bank & Trust Co | 14,890 | $1.55M | 0.03% | +1,299+9.6% | Added |
| CWM, LLC | 14,844 | $1.55M | 0.00% | −1,423−8.7% | Reduced |
| Quadrant Capital Group LLC | 14,789 | $1.54M | 0.05% | +9+0.1% | Added |
| Guggenheim Capital LLC | 14,351 | $1.50M | 0.01% | −2,427−14.5% | Reduced |
| OP Asset Management Ltd | 13,883 | $1.45M | 0.02% | −1,586−10.3% | Reduced |
| Alliance Wealth Advisors, LLC | 12,935 | $1.35M | 0.32% | +754+6.2% | Added |
| US Bancorp | 12,751 | $1.33M | 0.00% | −731−5.4% | Reduced |
| Commonwealth Equity Services, LLC | 12,749 | $1.33M | 0.00% | +705+5.9% | Added |
| HSBC Holdings PLC | 12,701 | $1.32M | 0.00% | −69,233−84.5% | Reduced |
| Legato Capital Management LLC | 12,451 | $1.30M | 0.14% | +12,451 | New |
| Virginia Retirement Systems Et Al | 12,160 | $1.27M | 0.01% | −800−6.2% | Reduced |
| Bank of Montreal | 12,039 | $1.25M | 0.00% | −1,959−14.0% | Reduced |
| The PNC Financial Services Group, Inc. | 12,007 | $1.25M | 0.00% | −3,119−20.6% | Reduced |
| Diversify Advisory Services, LLC | 11,777 | $1.25M | 0.04% | −2,507−17.6% | Reduced |
| Independent Financial Group, LLC | 11,731 | $1.22M | 0.03% | +5,231+80.5% | Added |
| Gibbs Wealth Management | 11,664 | $1.22M | 0.27% | −2,261−16.2% | Reduced |
| Inceptionr LLC | 11,662 | $1.22M | 0.29% | +3,053+35.5% | Added |
| State of Alaska, Department of Revenue | 11,575 | $1.21M | 0.01% | −500−4.1% | Reduced |
| BNC Wealth Management, LLC | 11,568 | $1.21M | 0.30% | −1,000−8.0% | Reduced |
| CIBC Bancorp USA Inc. | 11,510 | $1.20M | 0.01% | +11,510 | New |
| Bailard, Inc. | 11,090 | $1.16M | 0.03% | −11,518−50.9% | Reduced |
| Baader Bank INC | 11,042 | $1.15M | 0.10% | +11,042 | New |
| Bokf, NA | 10,822 | $1.13M | 0.02% | +58+0.5% | Added |
| Public Employees Retirement Association of Colorado | 10,766 | $1.12M | 0.00% | 00.0% | Unchanged |
| Hussman Strategic Advisors, Inc. | 10,500 | $1.09M | 0.24% | +10,500 | New |
| Susquehanna International Group, LLP | 10,349 | $1.08M | 0.00% | −133,367−92.8% | Reduced |
| Eventide Asset Management, LLC | 10,330 | $1.08M | 0.02% | +10,330 | New |
| Portside Wealth Group, LLC | 10,218 | $1.06M | 0.15% | +1,329+15.0% | Added |
| Harvest Fund Management Co., Ltd | 9,888 | $1.03M | 0.04% | +9,888 | New |
| Profund Advisors LLC | 9,840 | $1.03M | 0.03% | +374+4.0% | Added |
| Calamos Advisors LLC | 9,342 | $973.4K | 0.00% | +9,342 | New |
| Group One Trading, L.P. | 9,334 | $972.6K | 0.03% | +9,334 | New |
| Harbor Capital Advisors, Inc. | 9,250 | $964.0K | 0.07% | −55,190−85.6% | Reduced |
| Evergreen Capital Management LLC | 8,905 | $927.9K | 0.02% | +1,633+22.5% | Added |
| Nations Financial Group Inc, | 8,878 | $925.1K | 0.06% | −209−2.3% | Reduced |
| Wealth Enhancement Advisory Services, LLC | 9,363 | $906.7K | 0.00% | +187+2.0% | Added |
| SRS Capital Advisors, Inc. | 8,500 | $885.7K | 0.01% | +8,405+8,847.4% | Added |
| Sanctuary Advisors, LLC | 8,073 | $841.2K | 0.00% | −1,220−13.1% | Reduced |
| Securian Asset Management, Inc | 8,058 | $839.6K | 0.02% | −122−1.5% | Reduced |
| Unique Wealth Strategies, LLC | 8,025 | $836.2K | 0.33% | +8,025 | New |
| China Universal Asset Management Co., Ltd. | 8,000 | $833.6K | 0.07% | +8,000 | New |
| Mercer Global Advisors Inc | 7,759 | $808.4K | 0.00% | +1,295+20.0% | Added |
| Norden Group LLC | 7,655 | $797.7K | 0.08% | +208+2.8% | Added |
| Keebeck Wealth Management, LLC | 7,607 | $792.6K | 0.09% | −245−3.1% | Reduced |
| GTS Securities LLC | 7,521 | $783.7K | 0.03% | +7,521 | New |
| Oak Grove Capital LLC | 7,500 | $781.5K | 0.17% | −600−7.4% | Reduced |
| Beacon Pointe Advisors, LLC | 7,500 | $781.5K | 0.01% | +7,500 | New |
| Amundi | 7,611 | $768.7K | 0.00% | 00.0% | Unchanged |
| Advisors Asset Management, Inc. | 7,362 | $767.1K | 0.01% | +34+0.5% | Added |
| MML Investors Services, LLC | 7,334 | $764.2K | 0.00% | +580+8.6% | Added |
| Financiere des Professionnels - Fonds d,investissement inc. | 7,317 | $762.4K | 0.04% | 00.0% | Unchanged |
| Integrated Advisors Network LLC | 7,309 | $761.6K | 0.03% | +30.0% | Added |
| Atria Investments LLC | 7,270 | $757.5K | 0.01% | −1,268−14.9% | Reduced |
| Kerr Financial Planning Corp | 7,950 | $741.8K | 1.05% | +7,950 | New |
| Yorktown Management & Research Co Inc | 7,000 | $729.4K | 0.58% | 00.0% | Unchanged |
| Sumitomo Mitsui Trust Holdings, Inc. | 6,954 | $724.6K | 0.00% | +6,954 | New |
| Private Advisor Group, LLC | 6,727 | $701.0K | 0.00% | +320+5.0% | Added |
| RSM US Wealth Management LLC | 6,696 | $697.7K | 0.01% | −2,624−28.2% | Reduced |
| Brinker Capital Investments, LLC | 6,668 | $694.8K | 0.01% | +1,995+42.7% | Added |
| Equitable Holdings, Inc. | 6,657 | $693.7K | 0.01% | +6,657 | New |
| Crossmark Global Holdings, Inc. | 6,521 | $679.5K | 0.01% | −200−3.0% | Reduced |
| CI Private Wealth, LLC | 6,405 | $667.4K | 0.00% | +1,911+42.5% | Added |
| Verition Fund Management LLC | 6,397 | $666.6K | 0.00% | −1,573−19.7% | Reduced |
| Greenwood Capital Associates LLC | 6,361 | $662.8K | 0.08% | −2,857−31.0% | Reduced |
| Lido Advisors, LLC | 6,296 | $656.0K | 0.00% | +1,146+22.3% | Added |
| TCG Advisory Services, LLC | 6,281 | $654.5K | 0.02% | −19−0.3% | Reduced |
| Wolverine Trading, LLC | 6,284 | $653.5K | 0.01% | −1,238−16.5% | Reduced |
| FORA Capital, LLC | 6,256 | $651.9K | 0.12% | +6,256 | New |
| XTX Topco Ltd | 6,221 | $648.2K | 0.03% | +1,750+39.1% | Added |
| M.E. Allison & Co., Inc. | 5,897 | $614.5K | 0.43% | 00.0% | Unchanged |
| Aviva PLC | 5,786 | $602.9K | 0.00% | −2,410−29.4% | Reduced |
| Neo Ivy Capital Management | 5,770 | $601.2K | 0.15% | −3,970−40.8% | Reduced |
| Buckingham Strategic Partners | 5,564 | $596.8K | 0.01% | +455+8.9% | Added |
| Coldstream Capital Management Inc | 5,703 | $594.3K | 0.01% | +125+2.2% | Added |
| Empirical Financial Services, LLC d.b.a. Empirical Wealth Management | 5,659 | $589.7K | 0.01% | +5,659 | New |
| Sequoia Financial Advisors, LLC | 5,656 | $589.4K | 0.00% | +359+6.8% | Added |
| Twin Tree Management, LP | 5,624 | $586.0K | 0.03% | +5,624 | New |
| Bayforest Capital Ltd | 5,621 | $585.7K | 0.28% | +4,138+279.0% | Added |
| Vontobel Holding Ltd. | 5,503 | $573.4K | 0.00% | +5,503 | New |