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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.

Q3 2025 vs. Q2 2025

How the institutions holding Rambus Inc changed between Q2 2025 and Q3 2025.

All holders in Q3 2025All holders in Q2 2025

13F holders of RMBS: Q2 2025 compared with Q3 2025
MeasureQ2 2025Of which not filed for Q3 2025Q3 2025Change
Holders4598513+62
Shares97.1M2.20M98.8M+3.82M (+4.0%)
Value$6.22B$140.7M$10.3B+$4.21B (+69.3%)

8 institutions that held it in Q2 2025 haven't filed for Q3 2025 yet. Not filing isn't selling, so the changes leave them out.

New holders (123)

Institutions that held Rambus Inc at the end of Q3 2025 but not at the end of Q2 2025.

Showing the largest 100 of 123 by value.

Institutions new to RMBS in Q3 2025
InstitutionSharesValue% of portfolio
Rafferty Asset Management, LLC901,750$94.0M0.30%
William Blair Investment Management, LLC291,182$30.3M0.08%
Healthcare of Ontario Pension Plan Trust Fund200,000$20.8M0.04%
Arrowstreet Capital, Limited Partnership173,353$18.1M0.01%
Point72 Asset Management, L.P.166,667$17.4M0.04%
CloudAlpha Capital Management Limited/Hong Kong165,800$17.3M1.55%
Fisher Asset Management, LLC152,882$15.9M0.01%
Tairen Capital Ltd103,073$10.7M1.16%
EAM Investors, LLC89,201$9.14M1.05%
GF Fund Management Co. Ltd.85,293$8.89M0.16%
Rakuten Investment Management, Inc.52,387$7.49M0.03%
AXA Investment Managers S.A.65,678$6.84M0.02%
Erste Asset Management GmbH50,000$5.13M0.05%
Lisanti Capital Growth, LLC41,532$4.33M1.06%
Point72 Hong Kong Ltd39,524$4.12M0.19%
Susquehanna Portfolio Strategies, LLC32,526$3.39M0.05%
Nomura Holdings Inc27,046$2.82M0.01%
AMJ Financial Wealth Management26,973$2.81M0.68%
Azzad Asset Management Inc24,825$2.59M0.26%
Jackson Creek Investment Advisors LLC23,920$2.49M0.72%
Nissay Asset Management Corp22,257$2.32M0.01%
IMC-Chicago, LLC20,443$2.13M0.04%
Point72 Asia (Singapore) Pte. Ltd.18,591$1.94M0.30%
Nicholas Investment Partners, LP16,630$1.73M0.13%
Credit Agricole S A15,114$1.57M0.01%
Legato Capital Management LLC12,451$1.30M0.14%
CIBC Bancorp USA Inc.11,510$1.20M0.01%
Baader Bank INC11,042$1.15M0.10%
Hussman Strategic Advisors, Inc.10,500$1.09M0.24%
Eventide Asset Management, LLC10,330$1.08M0.02%
Harvest Fund Management Co., Ltd9,888$1.03M0.04%
Calamos Advisors LLC9,342$973.4K0.00%
Group One Trading, L.P.9,334$972.6K0.03%
Unique Wealth Strategies, LLC8,025$836.2K0.33%
China Universal Asset Management Co., Ltd.8,000$833.6K0.07%
GTS Securities LLC7,521$783.7K0.03%
Beacon Pointe Advisors, LLC7,500$781.5K0.01%
Kerr Financial Planning Corp7,950$741.8K1.05%
Sumitomo Mitsui Trust Holdings, Inc.6,954$724.6K0.00%
Equitable Holdings, Inc.6,657$693.7K0.01%
FORA Capital, LLC6,256$651.9K0.12%
Empirical Financial Services, LLC d.b.a. Empirical Wealth Management5,659$589.7K0.01%
Twin Tree Management, LP5,624$586.0K0.03%
Vontobel Holding Ltd.5,503$573.4K0.00%
Jennison Associates LLC5,406$563.3K0.00%
Global X Japan Co., Ltd.5,385$561.1K0.05%
Polymer Capital Management (US) LLC5,374$560.0K0.07%
Sigma Planning Corp5,243$546.3K0.02%
Swiss Life Asset Management Ltd4,886$509.1K0.00%
WBI Investments4,356$453.9K0.12%
Atom Investors LP4,292$447.2K0.03%
VGI Partners Ltd4,000$416.8K0.03%
Massar Capital Management, LP3,600$375.1K0.13%
Two Sigma Securities, LLC3,502$364.9K0.05%
Adams Wealth Management3,018$312.7K0.07%
CacheTech Inc.3,018$312.7K0.06%
Truist Financial Corp2,906$302.8K0.00%
Vise Technologies, Inc.2,846$296.6K0.01%
Greenleaf Trust2,737$285.2K0.00%
Gagnon Securities LLC2,711$282.5K0.06%
United Capital Financial Advisers, LLC2,693$280.6K0.00%
D.A. Davidson & Co.2,663$277.5K0.00%
Ewa, LLC2,638$274.9K0.08%
Everence Capital Management Inc2,590$270.0K0.02%
JDH Wealth Management, LLC2,572$268.0K0.19%
Point72 Europe (London) LLP2,570$267.7K0.01%
Net Worth Advisory Group2,532$263.8K0.08%
Requisite Capital Management, LLC2,522$262.8K0.04%
Trust Point Inc.2,517$262.3K0.02%
Meiji Yasuda Asset Management Co Ltd.2,500$260.5K0.01%
Blue Barn Wealth, LLC2,500$260.5K0.11%
Corient IA LLC2,500$260.5K0.19%
First Manhattan Co2,495$260.0K0.00%
Himension Fund2,470$257.4K0.02%
Keel Point, LLC2,430$253.2K0.02%
VisionPoint Advisory Group, LLC2,402$250.3K0.05%
Pinnacle Wealth Planning Services, Inc.2,273$236.8K0.03%
St Germain D J Co Inc2,245$233.9K0.01%
Rockefeller Capital Management L.P.2,195$228.7K0.00%
Hollencrest Capital Management2,176$226.7K0.01%
Krilogy Financial LLC2,049$222.5K0.01%
Kestra Advisory Services, LLC2,129$221.8K0.00%
NewEdge Wealth, LLC2,037$221.2K0.00%
Hilltop Holdings Inc.2,049$213.5K0.01%
Global Trust Asset Management, LLC2,030$211.5K0.10%
Vestmark Advisory Solutions, Inc.2,029$211.4K0.00%
DRW Securities, LLC2,026$211.4K0.01%
Oak Ridge Investments LLC2,023$210.8K0.01%
Wiley Bros.-Aintree Capital, LLC1,986$207.7K0.00%
Snowden Capital Advisors LLC1,992$207.6K0.01%
Johnson Investment Counsel Inc1,986$206.9K0.00%
Juncture Wealth Strategies, LLC1,980$206.3K0.07%
Chase Investment Counsel Corp1,973$205.0K0.06%
Oppenheimer Asset Management Inc.1,928$200.9K0.00%
National Bank of Canada1,859$193.6K0.00%
Picton Mahoney Asset Management1,285$134.0K0.00%
Wexford Capital LP999$104.1K0.03%
Daiwa Securities Group Inc.740$77.0K0.00%
Flagship Wealth Advisors, LLC700$72.9K0.02%
Advisory Services Network, LLC685$71.4K0.00%

Sold out (61)

Institutions that held Rambus Inc at the end of Q2 2025 and filed for Q3 2025 without it.

Institutions that sold out of RMBS in Q3 2025
InstitutionShares, Q2 2025Value, Q2 2025
Park West Asset Management LLC660,000$42.3M
Apis Capital Advisors, LLC112,000$7.17M
Stanley-Laman Group, Ltd.103,312$6.61M
Polar Asset Management Partners Inc.100,170$6.41M
Jump Financial, LLC99,200$6.35M
Squarepoint Ops LLC71,404$4.57M
Alberta Investment Management Corp64,600$4.14M
Royce & Associates LP64,175$4.11M
Dark Forest Capital Management LP43,444$2.78M
Jain Global LLC43,120$2.76M
PEAK6 LLC40,887$2.62M
Magnetar Financial LLC36,439$2.33M
Nebula Research & Development LLC28,720$1.84M
AXA S.A.25,227$1.62M
Brevan Howard Capital Management LP24,086$1.54M
DnB Asset Management AS23,063$1.48M
Polen Capital Management LLC20,135$1.29M
Centiva Capital, LP19,796$1.27M
Connor, Clark & Lunn Investment Management Ltd.19,142$1.23M
Fox Run Management, L.L.C.16,033$1.03M
Campbell & CO Investment Adviser LLC14,285$914.5K
Y-Intercept (Hong Kong) Ltd13,734$879.3K
Tudor Investment Corp Et Al10,689$684.3K
Graham Capital Management, L.P.9,515$609.1K
TownSquare Capital, LLC7,727$494.7K
Great Valley Advisor Group, Inc.7,200$460.9K
Counterpoint Mutual Funds LLC6,041$386.7K
Dynamic Technology Lab Private Ltd5,960$382.0K
Dakota Wealth Management5,681$363.7K
MQS Management LLC5,612$359.3K
Readystate Asset Management LP5,275$337.7K
Prosperity Wealth Management, Inc.5,245$335.8K
Engineers Gate Manager LP5,170$331.0K
ZWJ Investment Counsel Inc4,102$262.6K
Axq Capital, LP3,694$236.5K
Principal Street Partners, LLC3,488$223.3K
New Insight Wealth Advisors3,236$207.2K
Capstone Investment Advisors, LLC3,194$204.5K
Northwest Capital Management Inc1,700$108.8K
Quantbot Technologies LP1,592$101.9K
Walleye Capital LLC1,513$96.9K
NBC Securities, Inc.1,187$75.0K
Skopos Labs, Inc.1,051$67.3K
Meeder Asset Management Inc679$43.5K
Riggs Asset Managment Co. Inc.421$27.0K
Kestra Investment Management, LLC266$15.7K
Annis Gardner Whiting Capital Advisors, LLC215$13.8K
Fairway Wealth LLC200$12.8K
Quarry LP168$10.8K
Kozak & Associates, Inc.100$6.48K
Ameritas Advisory Services, LLC100$6.40K
Curio Wealth, LLC52$3.33K
NewSquare Capital LLC50$3.20K
Sound Income Strategies, LLC50$3.20K
Valley National Advisers Inc50$3.00K
Caitong International Asset Management Co., Ltd14$896
South State Corp.12$769
Arlington Trust Co LLC10$640
Twin Peaks Wealth Advisors, LLC7$535
Raleigh Capital Management Inc.8$512
WealthTrak Capital Management LLC5$321

Not filed for Q3 2025 yet (8)

Institutions that held Rambus Inc at the end of Q2 2025 and haven't filed a 13F for Q3 2025. Not filing isn't selling, so they aren't counted as sold out.

Institutions holding RMBS in Q2 2025 that haven't filed for Q3 2025
InstitutionShares, Q2 2025Value, Q2 2025
Norges Bank1,972,325$126.3M
Congress Wealth Management LLC191,225$12.2M
Scott Marsh Financial, LLC20,362$1.30M
CIBC World Markets Corp13,304$851.7K
First Horizon Advisors, Inc.243$15.6K
Legacy Investment Solutions, LLC33$2.11K
Capital A Wealth Management, LLC25$1.71K
Parkworth Wealth Management, Inc.2$128