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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.

Q4 2025 vs. Q3 2025

How the institutions holding Rambus Inc changed between Q3 2025 and Q4 2025.

All holders in Q4 2025All holders in Q3 2025

13F holders of RMBS: Q3 2025 compared with Q4 2025
MeasureQ3 2025Of which not filed for Q4 2025Q4 2025Change
Holders5139554+50
Shares98.8M335.4K99.8M+1.42M (+1.4%)
Value$10.3B$34.9M$9.18B−$1.08B (−10.5%)

9 institutions that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so the changes leave them out.

New holders (103)

Institutions that held Rambus Inc at the end of Q4 2025 but not at the end of Q3 2025.

Showing the largest 100 of 103 by value.

Institutions new to RMBS in Q4 2025
InstitutionSharesValue% of portfolio
Norges Bank1,701,551$156.4M0.02%
Driehaus Capital Management LLC954,164$87.7M0.60%
Public Sector Pension Investment Board305,209$28.0M0.09%
ArrowMark Colorado Holdings LLC272,010$25.0M0.55%
Nomura Asset Management International Inc.216,867$19.9M0.03%
Glenmede Trust Co NA172,534$15.9M0.08%
Axiom Investors LLC163,242$15.0M0.13%
Janney Montgomery Scott LLC122,562$11.3M0.03%
Tudor Investment Corp Et Al101,605$9.34M0.05%
Ranger Investment Management, L.P.95,490$8.77M0.60%
Trexquant Investment LP74,943$6.89M0.06%
M37 Management LP50,000$4.59M3.16%
EFG International AG37,531$3.45M0.07%
Weiss Asset Management LP36,300$3.34M0.05%
Y-Intercept (Hong Kong) Ltd29,450$2.71M0.06%
New Age Alpha Advisors, LLC28,668$2.63M0.11%
F/M Investments LLC26,710$2.45M0.09%
Walleye Capital LLC20,794$1.91M0.01%
PEAK6 LLC17,648$1.62M0.04%
Marshall Wace, LLP16,300$1.50M0.00%
Campbell & CO Investment Adviser LLC14,091$1.29M0.06%
Cookson Peirce & Co Inc13,607$1.25M0.05%
Entropy Technologies, LP12,810$1.18M0.06%
FIL Ltd11,774$1.08M0.00%
Jump Financial, LLC11,499$1.06M0.01%
Encompass More Asset Management10,349$951.0K0.18%
New York Life Investment Management LLC10,020$920.7K0.01%
FirstWave Capital Management LLC9,933$912.7K0.54%
Intesa Sanpaolo S.p.A.9,639$895.6K0.06%
Novem Group9,632$885.1K0.10%
Marshall Financial Group LLC7,801$716.8K0.14%
Evolve Private Wealth, LLC7,339$674.4K0.04%
Fox Run Management, L.L.C.7,303$671.1K0.10%
CIBC World Markets Corp7,143$656.4K0.00%
Diametric Capital, LP6,991$642.4K0.17%
Axq Capital, LP6,742$619.5K0.14%
Kestra Private Wealth Services, LLC6,695$615.2K0.01%
Argent Capital Management LLC6,403$588.4K0.02%
Inspire Advisors, LLC6,220$571.6K0.05%
Squarepoint Ops LLC5,496$505.0K0.00%
Systematic Alpha Investments, LLC5,300$487.0K0.02%
Ak Global Asset Management, LLC5,000$459.4K0.40%
Abel Hall, LLC4,994$458.9K0.11%
Simplex Trading, LLC3,884$356.9K0.01%
Skopos Labs, Inc.3,785$354.2K0.02%
Freestone Grove Partners LP3,574$328.4K0.00%
Schonfeld Strategic Advisors LLC3,505$322.1K0.00%
Occudo Quantitative Strategies LP3,494$321.1K0.02%
ProCore Advisors, LLC3,381$310.7K0.32%
Concurrent Investment Advisors, LLC3,354$308.2K0.00%
Journey Retirement Planning & Investment Management LLC3,312$304.3K0.06%
Virtu Financial LLC2,756$253.0K0.01%
Mirabella Financial Services LLP2,737$251.5K0.02%
VARCOV Co.2,672$245.5K0.10%
Aigen Investment Management, LP2,636$242.2K0.06%
Twinbeech Capital LP2,600$238.9K0.02%
AlphaGrep UK Ltd2,577$236.8K0.08%
Exchange Traded Concepts, LLC2,575$236.6K0.00%
Jag Capital Management, LLC2,563$235.5K0.03%
Prelude Capital Management, LLC2,327$213.8K0.02%
Abacus Wealth Partners, LLC2,210$203.1K0.02%
Argent Trust Co2,206$202.7K0.01%
Vestcor Inc1,896$174.0K0.00%
Eurizon Capital SGR S.p.A.1,687$159.6K0.00%
Kemnay Advisory Services Inc.1,072$98.5K0.01%
Caitong International Asset Management Co., Ltd876$80.5K0.02%
Migdal Insurance & Financial Holdings Ltd.548$50.0K0.00%
University of Texas/Texas Am Investment Managment Co308$28.3K0.00%
Torren Management, LLC280$25.7K0.01%
Acumen Wealth Advisors, LLC276$25.4K0.01%
Meeder Asset Management Inc243$22.3K0.00%
Strategic Advocates LLC213$20.2K0.01%
Strive Financial Group ,LLC210$19.3K0.01%
Contravisory Investment Management, Inc.142$13.0K0.00%
Aster Capital Management (DIFC) Ltd131$12.0K0.01%
Quarry LP105$9.65K0.00%
SHP Wealth Management104$9.56K0.00%
WPG Advisers, LLC99$9.10K0.01%
Rossby Financial, LCC75$6.89K0.00%
SageView Advisory Group, LLC74$6.80K0.00%
Keating Financial Advisory Services, Inc.58$5.33K0.00%
Valley National Advisers Inc50$4.00K0.00%
Zions Bancorporation, National Association37$3.40K0.00%
Optima Capital LLC32$2.94K0.00%
Battery Global Advisors, LLC32$2.94K0.00%
LRI Investments, LLC30$2.72K0.00%
Elyxium Wealth, LLC28$2.57K0.00%
Cornerstone Financial Management LLC26$2.39K0.00%
Atlantic Edge Private Wealth Management, LLC20$1.84K0.00%
Central Trust Co17$1.56K0.00%
Annis Gardner Whiting Capital Advisors, LLC15$1.38K0.00%
Chilton Capital Management LLC10$9190.00%
Rachor Investment Advisory Services, LLC9$8280.00%
Trust Co8$7350.00%
South State Corp.6$5520.00%
Basecamp Wealth Advisors LLC6$5510.00%
USA Financial Portformulas Corp5$4590.00%
Godfrey Financial Associates, Inc.5$4590.00%
Dunhill Financial, LLC2$2110.00%
Toronto Dominion Bank1$1340.00%

Sold out (53)

Institutions that held Rambus Inc at the end of Q3 2025 and filed for Q4 2025 without it.

Institutions that sold out of RMBS in Q4 2025
InstitutionShares, Q3 2025Value, Q3 2025
Analog Century Management LP631,343$65.8M
Healthcare of Ontario Pension Plan Trust Fund200,000$20.8M
Arrowstreet Capital, Limited Partnership173,353$18.1M
CloudAlpha Capital Management Limited/Hong Kong165,800$17.3M
Tairen Capital Ltd103,073$10.7M
Lisanti Capital Growth, LLC41,532$4.33M
Penserra Capital Management LLC34,162$3.56M
Capital Fund Management S.A.29,371$3.06M
Nomura Holdings Inc27,046$2.82M
Jackson Creek Investment Advisors LLC23,920$2.49M
IMC-Chicago, LLC20,443$2.13M
Zacks Investment Management19,110$1.99M
Cinctive Capital Management LP16,315$1.70M
Baader Bank INC11,042$1.15M
Hussman Strategic Advisors, Inc.10,500$1.09M
Unique Wealth Strategies, LLC8,025$836.2K
Beacon Pointe Advisors, LLC7,500$781.5K
XTX Topco Ltd6,221$648.2K
Neo Ivy Capital Management5,770$601.2K
Polymer Capital Management (US) LLC5,374$560.0K
K.J. Harrison & Partners Inc5,000$518.5K
Empowered Funds, LLC4,450$463.7K
WBI Investments4,356$453.9K
Atom Investors LP4,292$447.2K
NJ State Employees Deferred Compensation Plan4,000$416.8K
Massar Capital Management, LP3,600$375.1K
Mitsubishi UFJ Trust & Banking Corp2,784$290.1K
Requisite Capital Management, LLC2,522$262.8K
Blue Barn Wealth, LLC2,500$260.5K
Keel Point, LLC2,430$253.2K
St Germain D J Co Inc2,245$233.9K
NewEdge Wealth, LLC2,037$221.2K
Hilltop Holdings Inc.2,049$213.5K
DRW Securities, LLC2,026$211.4K
Johnson Investment Counsel Inc1,986$206.9K
Juncture Wealth Strategies, LLC1,980$206.3K
Chase Investment Counsel Corp1,973$205.0K
Oppenheimer Asset Management Inc.1,928$200.9K
Picton Mahoney Asset Management1,285$134.0K
Wexford Capital LP999$104.1K
Principal Securities, Inc.730$76.1K
Advisory Services Network, LLC685$71.4K
Ci Investments Inc.661$69.0K
Credit Industriel Et Commercial505$52.6K
Rise Advisors, LLC405$42.2K
Wealthspire Advisors, LLC323$33.7K
GPS Wealth Strategies Group, LLC70$7.29K
Mather Group, LLC.33$3.44K
JPL Wealth Management, LLC15$1.56K
Marquette Asset Management, LLC14$1.46K
Montag A & Associates Inc12$1.25K
Cloud Capital Management, LLC19$1.00K
Tortoise Investment Management, LLC2$208

Not filed for Q4 2025 yet (9)

Institutions that held Rambus Inc at the end of Q3 2025 and haven't filed a 13F for Q4 2025. Not filing isn't selling, so they aren't counted as sold out.

Institutions holding RMBS in Q3 2025 that haven't filed for Q4 2025
InstitutionShares, Q3 2025Value, Q3 2025
Glenmede Investment Management, LP188,187$19.6M
AXA Investment Managers S.A.65,678$6.84M
Point72 Hong Kong Ltd39,524$4.12M
Point72 Asia (Singapore) Pte. Ltd.18,591$1.94M
CIBC Bancorp USA Inc.11,510$1.20M
Wolverine Trading, LLC6,284$653.5K
Shell Asset Management Co2,930$305.0K
Point72 Europe (London) LLP2,570$267.7K
Hemington Wealth Management110$11.0K