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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.

Q2 2026 vs. Q1 2026

How the institutions holding Rambus Inc changed between Q1 2026 and Q2 2026.

All holders in Q2 2026All holders in Q1 2026

13F holders of RMBS: Q1 2026 compared with Q2 2026
MeasureQ1 2026Of which not filed for Q2 2026Q2 2026Change
Holders5577621+71
Shares102.8M401.1K100.5M−1.86M (−1.8%)
Value$8.83B$34.5M$13.3B+$4.50B (+51.2%)

7 institutions that held it in Q1 2026 haven't filed for Q2 2026 yet. Not filing isn't selling, so the changes leave them out.

New holders (137)

Institutions that held Rambus Inc at the end of Q2 2026 but not at the end of Q1 2026.

Showing the largest 100 of 137 by value.

Institutions new to RMBS in Q2 2026
InstitutionSharesValue% of portfolio
Norges Bank1,532,622$203.4M0.02%
HRT Financial LP423,352$56.2M0.10%
Maple Rock Capital Partners Inc.342,600$45.5M0.89%
Nykredit A/S320,040$42.5M0.16%
Jupiter Topco LLC288,553$38.3M0.02%
Gilder Gagnon Howe & Co LLC257,434$34.2M0.35%
William Blair Investment Management, LLC200,116$26.6M0.08%
Duquesne Family Office LLCSuperinvestorDuquesne Family Office173,000$23.0M0.53%
Tudor Investment Corp Et Al157,155$20.9M0.09%
Nomura Holdings Inc101,062$13.4M0.06%
Qube Research & Technologies Ltd89,539$11.9M0.01%
Catalyst Funds Management Pty Ltd88,800$11.8M0.66%
Treasurer of the State of North Carolina45,790$6.08M0.02%
Brevan Howard Capital Management LP43,098$5.72M0.08%
ExodusPoint Capital Management, LP38,091$5.06M0.05%
Engineers Gate Manager LP35,888$4.76M0.06%
Daventry Group, LP30,500$4.05M3.06%
Aubrey Capital Management Ltd24,300$3.22M2.02%
One Capital Management, LLC34,586$2.98M0.08%
Hudson Bay Capital Management LP22,020$2.92M0.01%
Entropy Technologies, LP17,987$2.39M0.10%
Aster Capital Management (DIFC) Ltd15,898$2.11M0.45%
Hussman Strategic Advisors, Inc.14,700$1.95M0.45%
Susquehanna Fundamental Investments, LLC14,638$1.94M0.04%
Twinbeech Capital LP14,307$1.90M0.34%
Worldquant Millennium Advisors LLC14,056$1.87M0.01%
Schonfeld Strategic Advisors LLC14,000$1.86M0.01%
LMR Partners LLP13,852$1.84M0.01%
Tuttle Tactical Management13,260$1.76M1.19%
Sphera Management Technology Funds Ltd11,950$1.59M0.56%
Kornitzer Capital Management Inc11,000$1.46M0.03%
RMB Capital Management, LLC10,742$1.43M0.02%
Sona Asset Management (US) LLC10,000$1.33M0.05%
Discovery Capital Management, LLC9,965$1.32M0.05%
Arrowpoint Investment Partners (Singapore) Pte. Ltd.9,559$1.27M0.37%
Redhawk Wealth Advisors, Inc.9,237$1.23M0.12%
Jefferies Financial Group Inc.8,974$1.19M0.01%
Global Retirement Partners, LLC8,471$1.12M0.02%
Virtu Financial LLC8,204$1.09M0.03%
IMC-Chicago, LLC7,129$946.3K0.01%
Simplex Trading, LLC6,803$903.0K0.02%
Diametric Capital, LP6,504$863.3K0.09%
Mitsubishi UFJ Trust & Banking Corp6,354$843.4K0.00%
Scotia Capital Inc.6,338$841.3K0.00%
Vestmark Advisory Solutions, Inc.6,293$835.3K0.01%
Maryland State Retirement & Pension System5,875$779.8K0.01%
Headlands Technologies LLC5,768$765.6K0.08%
Campbell & CO Investment Adviser LLC5,740$761.9K0.04%
Castleark Management LLC5,610$744.7K0.02%
Utah Retirement Systems5,609$744.5K0.01%
Dakota Wealth Management5,175$686.9K0.01%
Pekin Hardy Strauss, Inc.5,120$679.6K0.06%
WMS Group LLC5,038$668.7K0.86%
AnglePoint Asset Management Ltd5,012$665.3K0.43%
Pinebridge Investments LLC4,715$625.9K0.01%
Parallax Volatility Advisers, L.P.4,573$607.0K0.02%
USS Investment Management Ltd4,500$596.7K0.00%
Neo Ivy Capital Management4,310$572.1K0.13%
Patten Group, Inc.4,134$548.7K0.09%
Dark Forest Capital Management LP4,030$534.9K0.03%
CWM Advisors, LLC4,017$533.2K0.02%
Twin Tree Management, LP3,992$529.9K0.08%
Altshuler Shaham Ltd3,776$501.2K0.01%
Savant Capital, LLC4,392$480.9K0.00%
Polymer Capital Management (US) LLC3,469$460.5K0.07%
Laurion Capital Management LP3,414$453.2K0.03%
Graham Capital Management, L.P.3,330$442.0K0.01%
North Dakota State Investment Board3,169$420.7K0.02%
One Wealth Capital Management, LLC3,167$420.4K0.12%
Buffalo Business & Estate Services Ltd–$418.4K0.05%
Stonebridge Financial Group, LLC2,980$395.0K0.05%
Monticello Wealth Management, LLC2,923$388.0K0.02%
Legacy Advisors, LLC2,793$370.7K0.03%
Foundations Investment Advisors, LLC2,639$350.3K0.00%
Walser Wealth Management Company, A Ltd Liability Co2,528$335.6K0.14%
HB Wealth Management, LLC2,498$331.6K0.00%
Betterment LLC2,258$300.0K0.00%
Ci Investments Inc.2,150$285.4K0.00%
BankChampaign, National Association2,084$276.6K0.21%
Ballentine Partners, LLC2,070$274.8K0.00%
Chicago Partners Investment Group LLC2,641$272.5K0.01%
QRG Capital Management, Inc.1,948$258.6K0.00%
Ifrah Financial Services, Inc.1,927$255.9K0.06%
Integrated Wealth Concepts LLC1,902$252.5K0.00%
Natixis1,900$252.2K0.00%
Claret Asset Management Corp1,821$242.0K0.03%
Wexford Capital LP1,823$242.0K0.03%
Colony Group, LLC1,813$240.6K0.00%
Quantessence Capital LLC1,757$233.2K0.69%
Mount Yale Investment Advisors, LLC1,710$227.0K0.00%
Arkadios Wealth Advisors1,670$221.7K0.00%
Kestra Advisory Services, LLC1,656$219.8K0.00%
FSM Wealth Advisors, LLC1,645$218.3K0.02%
Family Management Corp1,566$207.9K0.02%
Summit Financial, LLC1,558$206.8K0.00%
Blankinship & Foster, LLC1,548$205.5K0.04%
Brookstone Capital Management1,540$204.4K0.00%
Atomi Financial Group, Inc.1,518$201.5K0.01%
Banco Bilbao Vizcaya Argentaria, S.A.1,605$201.1K0.00%
Harbor Investment Advisory, LLC1,019$135.3K0.01%

Sold out (66)

Institutions that held Rambus Inc at the end of Q1 2026 and filed for Q2 2026 without it.

Institutions that sold out of RMBS in Q2 2026
InstitutionShares, Q1 2026Value, Q1 2026
T. Rowe Price Investment Management, Inc.2,391,020$205.7M
Hood River Capital Management LLC727,494$62.6M
Steadfast Capital Management LP153,250$13.2M
TD Asset Management Inc120,282$10.3M
Tairen Capital Ltd120,000$10.3M
Osterweis Capital Management Inc84,930$7.31M
Fred Alger Management, LLC66,862$5.75M
Munro Partners64,395$5.54M
Thornburg Investment Management Inc58,106$5.00M
Holocene Advisors, LP49,604$4.27M
AI-Squared Management Ltd49,578$4.27M
Moody Aldrich Partners LLC37,335$3.21M
Future Fund LLC34,386$2.96M
South Dakota Investment Council28,613$2.46M
Element Squared LLC23,567$2.03M
Capstone Capital Management Ltd23,326$2.01M
Cookson Peirce & Co Inc17,328$1.49M
Wesbanco Bank Inc14,300$1.23M
Sunstone Asset Management, L.P.11,746$1.01M
Aurora Investment Counsel10,883$936.3K
Bailard, Inc.9,375$806.5K
Two Sigma Securities, LLC8,849$761.3K
Inspire Advisors, LLC7,383$635.1K
RSM US Wealth Management LLC6,578$565.9K
Monolith Management Ltd6,200$533.4K
China Universal Asset Management Co., Ltd.6,000$516.2K
Systematic Alpha Investments, LLC5,300$456.0K
QVT Financial LP4,648$399.9K
Qsemble Capital Management, LP4,529$389.6K
Savvy Advisors, Inc.4,308$370.6K
Ground Swell Capital, LLC3,613$310.8K
Blackstone Group Inc.3,314$285.1K
Focused Alpha, LLC3,269$281.2K
Bamco Inc3,111$267.6K
Winton Group Ltd3,051$262.5K
Chase Investment Counsel Corp3,018$259.0K
Centiva Capital, LP2,995$257.7K
Abacus Wealth Partners, LLC2,898$249.3K
Mirabella Financial Services LLP2,485$213.8K
Financiere des Professionnels - Fonds d,investissement inc.2,299$197.8K
Stonehage Fleming Financial Services Holdings Ltd1,634$140.6K
Byrne Asset Management LLC1,237$106.4K
Kemnay Advisory Services Inc.730$62.8K
Advisory Services Network, LLC665$57.2K
Bayforest Capital Ltd632$54.4K
Optiver Holding B.V.480$41.3K
Steward Partners Investment Advisory, LLC411$35.4K
Group One Trading, L.P.372$32.0K
University of Texas/Texas Am Investment Managment Co308$26.5K
Tradewinds Capital Management, LLC296$25.5K
Wall Street Financial Group, Inc.268$23.1K
Root Financial Partners, LLC247$21.2K
Innovative Asset Advisors Group, LLC126$10.8K
Globeflex Capital L P101$8.69K
Global Trust Asset Management, LLC100$8.60K
Crews Bank & Trust59$5.08K
Legacy Wealth Managment, LLC56$4.82K
Raleigh Capital Management Inc.21$1.81K
Twin Peaks Wealth Advisors, LLC19$1.64K
Central Trust Co17$1.46K
Cullen/Frost Bankers, Inc.13$1.12K
Operose Advisors LLC11$946
Rachor Investment Advisory Services, LLC9$775
Vermillion Wealth Management, Inc.6$516
Intentional Wealth Strategies, LLC5$430
Curio Wealth, LLC3$258

Not filed for Q2 2026 yet (7)

Institutions that held Rambus Inc at the end of Q1 2026 and haven't filed a 13F for Q2 2026. Not filing isn't selling, so they aren't counted as sold out.

Institutions holding RMBS in Q1 2026 that haven't filed for Q2 2026
InstitutionShares, Q1 2026Value, Q1 2026
Janus Henderson Group PLC358,892$30.9M
Gibbs Wealth Management18,234$1.57M
CWM, LLC15,769$1.36M
Skopos Labs, Inc.5,142$442.4K
Journey Strategic Wealth LLC2,995$257.7K
Sunbelt Securities, Inc.94$8.09K
USA Financial Portformulas Corp5$430