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, Q1 2025
Institutional positions in Rambus Inc as of Mar 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
- 413
- +24 vs. Q4 2024
- Shares held
- 96.7M
- +4.72M (+5.1%) vs. Q4 2024
- Total value
- $5.01B
- +$145.7M (+3.0%) vs. Q4 2024
- New holders
- 78
- 159 more added
- Sold out
- 54
- 131 more reduced
6 institutions that held it in Q4 2024 haven't filed for Q1 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2024: 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, Q1 2025
Shares, value and share of portfolio for each institution holding Rambus Inc; share changes are against Q4 2024.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Northern Trust Corp | 1,420,613 | $73.6M | 0.01% | −42,725−2.9% | Reduced |
| American Century Companies Inc | 1,424,365 | $73.7M | 0.05% | +248,013+21.1% | Added |
| Bank of New York Mellon Corp | 1,784,251 | $92.4M | 0.02% | −311,723−14.9% | Reduced |
| Dimensional Fund Advisors LP | 1,868,434 | $96.7M | 0.02% | +134,246+7.7% | Added |
| Norges Bank | 2,009,726 | $104.1M | 0.01% | +224,484+12.6% | Added |
| Geode Capital Management, LLC | 2,651,947 | $137.3M | 0.01% | +74,762+2.9% | Added |
| JPMorgan Chase & Co | 3,647,406 | $188.8M | 0.01% | −536,964−12.8% | Reduced |
| Invesco Ltd. | 4,532,026 | $234.6M | 0.04% | −467,722−9.4% | Reduced |
| State Street Corp | 4,580,557 | $237.2M | 0.01% | −156,858−3.3% | Reduced |
| Price T Rowe Associates Inc | 8,746,856 | $452.9M | 0.06% | +3,297,728+60.5% | Added |
| Vanguard Group Inc | 12,442,412 | $644.2M | 0.01% | −152,567−1.2% | Reduced |
| BlackRock, Inc. | 14,236,566 | $737.1M | 0.02% | +97,504+0.7% | Added |
| PenderFund Capital Management Ltd. | 299 | – | – | +169+130.0% | Added |
| Proequities, Inc. | 0 | $0 | 0.00% | −795−100.0% | Sold out |
| Hexagon Capital Partners LLC | 0 | $0 | 0.00% | −3−100.0% | Sold out |
| Crestline Management, LP | 0 | $0 | 0.00% | −410,113−100.0% | Sold out |
| Point72 Asset Management, L.P. | 0 | $0 | 0.00% | −161,153−100.0% | Sold out |
| Balyasny Asset Management LLC | 0 | $0 | 0.00% | −113,687−100.0% | Sold out |
| Public Sector Pension Investment Board | 0 | $0 | 0.00% | −78,600−100.0% | Sold out |
| Healthcare of Ontario Pension Plan Trust Fund | 0 | $0 | 0.00% | −73,200−100.0% | Sold out |
| Centiva Capital, LP | 0 | $0 | 0.00% | −44,098−100.0% | Sold out |
| Zacks Investment Management | 0 | $0 | 0.00% | −42,948−100.0% | Sold out |
| Tudor Investment Corp Et Al | 0 | $0 | 0.00% | −35,256−100.0% | Sold out |
| Cubist Systematic Strategies, LLC | 0 | $0 | 0.00% | −32,753−100.0% | Sold out |
| Jackson Square Partners, LLC | 0 | $0 | 0.00% | −31,318−100.0% | Sold out |
| Point72 Asia (Singapore) Pte. Ltd. | 0 | $0 | 0.00% | −31,156−100.0% | Sold out |
| HRT Financial LP | 0 | $0 | 0.00% | −30,607−100.0% | Sold out |
| Campbell & CO Investment Adviser LLC | 0 | $0 | 0.00% | −25,871−100.0% | Sold out |
| Natixis | 0 | $0 | 0.00% | −24,500−100.0% | Sold out |
| Marshall Wace, LLP | 0 | $0 | 0.00% | −20,455−100.0% | Sold out |
| Fieldview Capital Management, LLC | 0 | $0 | 0.00% | −20,103−100.0% | Sold out |
| AXA S.A. | 0 | $0 | 0.00% | −16,407−100.0% | Sold out |
| Dynamic Technology Lab Private Ltd | 0 | $0 | 0.00% | −15,520−100.0% | Sold out |
| BNP Paribas | 0 | $0 | 0.00% | −15,124−100.0% | Sold out |
| Fox Run Management, L.L.C. | 0 | $0 | 0.00% | −14,392−100.0% | Sold out |
| Nomura Holdings Inc | 0 | $0 | 0.00% | −14,115−100.0% | Sold out |
| Weiss Asset Management LP | 0 | $0 | 0.00% | −10,075−100.0% | Sold out |
| Holocene Advisors, LP | 0 | $0 | 0.00% | −9,532−100.0% | Sold out |
| Jain Global LLC | 0 | $0 | 0.00% | −9,285−100.0% | Sold out |
| Aigen Investment Management, LP | 0 | $0 | 0.00% | −8,126−100.0% | Sold out |
| First Hawaiian Bank | 0 | $0 | 0.00% | −7,830−100.0% | Sold out |
| Quantessence Capital LLC | 0 | $0 | 0.00% | −7,421−100.0% | Sold out |
| Forum Financial Management, LP | 0 | $0 | 0.00% | −7,017−100.0% | Sold out |
| Saturna Capital CORP | 0 | $0 | 0.00% | −6,681−100.0% | Sold out |
| Virtu Financial LLC | 0 | $0 | 0.00% | −6,032−100.0% | Sold out |
| Walleye Trading LLC | 0 | $0 | 0.00% | −5,941−100.0% | Sold out |
| Arete Wealth Advisors, LLC | 0 | $0 | 0.00% | −5,578−100.0% | Sold out |
| Sciencast Management LP | 0 | $0 | 0.00% | −4,939−100.0% | Sold out |
| PharVision Advisers, LLC | 0 | $0 | 0.00% | −4,778−100.0% | Sold out |
| Magnetar Financial LLC | 0 | $0 | 0.00% | −4,535−100.0% | Sold out |
| Qsemble Capital Management, LP | 0 | $0 | 0.00% | −4,141−100.0% | Sold out |
| Gotham Asset Management, LLC | 0 | $0 | 0.00% | −4,092−100.0% | Sold out |
| Aster Capital Management (DIFC) Ltd | 0 | $0 | 0.00% | −1,385−100.0% | Sold out |
| GeoWealth Management, LLC | 0 | $0 | 0.00% | −1,291−100.0% | Sold out |
| Credit Agricole S A | 0 | $0 | 0.00% | −1,175−100.0% | Sold out |
| Meeder Asset Management Inc | 0 | $0 | 0.00% | −1,102−100.0% | Sold out |
| Van Hulzen Asset Management, LLC | 0 | $0 | 0.00% | −1,000−100.0% | Sold out |
| Financial Life Planners | 0 | $0 | 0.00% | −300−100.0% | Sold out |
| Cullen/Frost Bankers, Inc. | 0 | $0 | 0.00% | −212−100.0% | Sold out |
| Nelson, Van Denburg & Campbell Wealth Management Group, LLC | 0 | $0 | 0.00% | −163−100.0% | Sold out |
| Coppell Advisory Solutions LLC | 0 | $0 | 0.00% | −147−100.0% | Sold out |
| Steward Partners Investment Advisory, LLC | 0 | $0 | 0.00% | −80−100.0% | Sold out |
| LGT Financial Advisors LLC | 0 | $0 | 0.00% | −80−100.0% | Sold out |
| Continuum Advisory, LLC | 0 | $0 | 0.00% | −75−100.0% | Sold out |
| Westside Investment Management, Inc. | 0 | $0 | 0.00% | −25−100.0% | Sold out |
| R Squared Ltd | 0 | $0 | 0.00% | −20−100.0% | Sold out |
| Capital A Wealth Management, LLC | 0 | $0 | 0.00% | −2−100.0% | Sold out |
| Swedbank AB | – | – | – | – | Not filed |
| Nuveen Asset Management, LLC | – | – | – | – | Not filed |
| Mesirow Institutional Investment Management, Inc. | – | – | – | – | Not filed |
| Householder Group Estate & Retirement Specialist, LLC | – | – | – | – | Not filed |
| Global Retirement Partners, LLC | – | – | – | – | Not filed |
| Legacy Investment Solutions, LLC | – | – | – | – | Not filed |