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Livermore
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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.

13F holders, Q1 2026

Institutional positions in Rambus Inc as of Mar 31, 2026. 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
557
+11 vs. Q4 2025
Shares held
102.8M
+17.0M (+19.8%) vs. Q4 2025
Total value
$8.83B
+$938.8M (+11.9%) vs. Q4 2025
New holders
85
189 more added
Sold out
74
207 more reduced

8 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q4 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.

Institutional holdersQ1 2026: 557 institutions
Q1 2021: 213 institutionsQ2 2021: 219 institutionsQ3 2021: 236 institutionsQ4 2021: 258 institutionsQ1 2022: 276 institutionsQ2 2022: 253 institutionsQ3 2022: 241 institutionsQ4 2022: 303 institutionsQ1 2023: 337 institutionsQ2 2023: 393 institutionsQ3 2023: 350 institutionsQ4 2023: 400 institutionsQ1 2024: 375 institutionsQ2 2024: 363 institutionsQ3 2024: 376 institutionsQ4 2024: 395 institutionsQ1 2025: 413 institutionsQ2 2025: 459 institutionsQ3 2025: 513 institutionsQ4 2025: 554 institutionsQ1 2026: 557 institutionsQ2 2026: 621 institutions
Value heldQ1 2026: $8.83B
Q1 2021: $1.86BQ2 2021: $2.30BQ3 2021: $2.07BQ4 2021: $2.80BQ1 2022: $2.98BQ2 2022: $2.07BQ3 2022: $2.38BQ4 2022: $3.27BQ1 2023: $4.81BQ2 2023: $6.14BQ3 2023: $5.48BQ4 2023: $6.62BQ1 2024: $6.00BQ2 2024: $5.64BQ3 2024: $3.94BQ4 2024: $5.03BQ1 2025: $5.01BQ2 2025: $6.22BQ3 2025: $10.3BQ4 2025: $9.18BQ1 2026: $8.83BQ2 2026: $13.3B
Institutions holding RMBS and their total value by quarter
QuarterHoldersValue
Q2 2026621$13.3B
Q1 2026557$8.83B
Q4 2025554$9.18B
Q3 2025513$10.3B
Q2 2025459$6.22B
Q1 2025413$5.01B
Q4 2024395$5.03B
Q3 2024376$3.94B
Q2 2024363$5.64B
Q1 2024375$6.00B
Q4 2023400$6.62B
Q3 2023350$5.48B
Q2 2023393$6.14B
Q1 2023337$4.81B
Q4 2022303$3.27B
Q3 2022241$2.38B
Q2 2022253$2.07B
Q1 2022276$2.98B
Q4 2021258$2.80B
Q3 2021236$2.07B
Q2 2021219$2.30B
Q1 2021213$1.86B

Institutions, Q1 2026

Shares, value and share of portfolio for each institution holding Rambus Inc; share changes are against Q4 2025.

Institutions holding RMBS in Q1 2026
InstitutionSharesValue% of portfolioChange in sharesAction
Financial Network Wealth Advisors LLC45$3.87K0.00%−7−13.5%Reduced
High Note Wealth, LLC41$3.53K0.00%−1−2.4%Reduced
Toth Financial Advisory Corp28$2.41K0.00%00.0%Unchanged
Zions Bancorporation, National Association27$2.32K0.00%−10−27.0%Reduced
Cornerstone Planning Group LLC19$2.24K0.00%+6+46.2%Added
MV Capital Management, Inc.26$2.24K0.00%−1−3.7%Reduced
Atlantic Trust, LLC25$2.15K0.00%00.0%Unchanged
Avion Wealth28$2.00K0.00%00.0%Unchanged
Cornerstone Financial Management LLC21$1.81K0.00%−5−19.2%Reduced
Manchester Capital Management LLC21$1.81K0.00%00.0%Unchanged
Bogart Wealth, LLC21$1.81K0.00%00.0%Unchanged
CBIZ Investment Advisory Services, LLC21$1.81K0.00%00.0%Unchanged
Raleigh Capital Management Inc.21$1.81K0.00%+21New
Barrett & Company, Inc.20$1.72K0.00%00.0%Unchanged
Walleye Capital LLC19$1.64K0.00%−20,775−99.9%Reduced
SJS Investment Consulting Inc.19$1.64K0.00%+10+111.1%Added
Armstrong Advisory Group, Inc19$1.64K0.00%+19New
Twin Peaks Wealth Advisors, LLC19$1.64K0.00%+19New
UMA Financial Services, Inc.18$1.55K0.00%+6+50.0%Added
Central Trust Co17$1.46K0.00%00.0%Unchanged
Activest Wealth Management17$1.46K0.00%00.0%Unchanged
DiNuzzo Private Wealth, Inc.16$1.38K0.00%−2−11.1%Reduced
Marquette Asset Management, LLC16$1.38K0.00%+16New
JPL Wealth Management, LLC15$1.29K0.00%+15New
Creative Financial Designs Inc14$1.20K0.00%00.0%Unchanged
Bare Financial Services, Inc14$1.20K0.00%00.0%Unchanged
Hughes Financial Services, LLC14$1.20K0.00%+1+7.7%Added
Cullen/Frost Bankers, Inc.13$1.12K0.00%−10−43.5%Reduced
North Star Investment Management Corp.13$1.12K0.00%+13New
Salomon & Ludwin, LLC12$1.12K0.00%00.0%Unchanged
Dunhill Financial, LLC12$1.06K0.00%+10+500.0%Added
Bay Harbor Wealth Management, LLC12$1.03K0.00%+4+50.0%Added
Capital Advisors, Ltd. LLC10$1.00K0.00%00.0%Unchanged
Quent Capital, LLC11$9460.00%−1−8.3%Reduced
Financial Management Professionals, Inc.11$9460.00%00.0%Unchanged
Operose Advisors LLC11$9460.00%+11New
Chilton Capital Management LLC10$8610.00%00.0%Unchanged
Prestige Wealth Management Group LLC10$8610.00%00.0%Unchanged
Silicon Valley Capital Partners10$8600.00%+10New
Dogwood Wealth Management LLC10$8600.00%+10New
Rachor Investment Advisory Services, LLC9$7750.00%00.0%Unchanged
Trust Co8$6880.00%00.0%Unchanged
Rialto Wealth Management, LLC7$6030.00%+2+40.0%Added
Basecamp Wealth Advisors LLC6$5160.00%00.0%Unchanged
Vermillion Wealth Management, Inc.6$5160.00%+6New
DecisionPoint Financial, LLC5$4310.00%00.0%Unchanged
HFM Investment Advisors, LLC5$4300.00%00.0%Unchanged
USA Financial Portformulas Corp5$4300.00%00.0%Unchanged
Godfrey Financial Associates, Inc.5$4300.00%00.0%Unchanged
Intentional Wealth Strategies, LLC5$4300.00%+5New
IMA Wealth, Inc.4$3440.00%00.0%Unchanged
Transamerica Financial Advisors, Inc.4$3440.00%+2+100.0%Added
Curio Wealth, LLC3$2580.00%+3New
Principia Wealth Advisory, LLC2$1720.00%+2New
Pinpoint Asset Management (Singapore) Pte. Ltd.1$860.00%00.0%Unchanged
AdvisorNet Financial, Inc1$860.00%+1New
Raffa Wealth Management, LLC1$860.00%+1New
William Blair Investment Management, LLC0$00.00%−316,397−100.0%Sold out
Public Sector Pension Investment Board0$00.00%−305,209−100.0%Sold out
Tudor Investment Corp Et Al0$00.00%−101,605−100.0%Sold out
Castleark Management LLC0$00.00%−95,578−100.0%Sold out
Hillsdale Investment Management Inc.0$00.00%−88,990−100.0%Sold out
Trexquant Investment LP0$00.00%−74,943−100.0%Sold out
EAM Investors, LLC0$00.00%−60,957−100.0%Sold out
Erste Asset Management GmbH0$00.00%−55,600−100.0%Sold out
M37 Management LP0$00.00%−50,000−100.0%Sold out
Two Sigma Advisers, LP0$00.00%−46,700−100.0%Sold out
Point72 Asset Management, L.P.0$00.00%−30,021−100.0%Sold out
F/M Investments LLC0$00.00%−26,710−100.0%Sold out
Skandinaviska Enskilda Banken AB (publ)0$00.00%−24,177−100.0%Sold out
PEAK6 LLC0$00.00%−17,648−100.0%Sold out
Epoch Investment Partners, Inc.0$00.00%−17,603−100.0%Sold out
GF Fund Management Co. Ltd.0$00.00%−15,975−100.0%Sold out
Credit Agricole S A0$00.00%−15,114−100.0%Sold out
Campbell & CO Investment Adviser LLC0$00.00%−14,091−100.0%Sold out
Entropy Technologies, LP0$00.00%−12,810−100.0%Sold out
Edgestream Partners, L.P.0$00.00%−11,739−100.0%Sold out
Encompass More Asset Management0$00.00%−10,349−100.0%Sold out
Eventide Asset Management, LLC0$00.00%−10,330−100.0%Sold out
Vestmark Advisory Solutions, Inc.0$00.00%−9,992−100.0%Sold out
FirstWave Capital Management LLC0$00.00%−9,933−100.0%Sold out
GTS Securities LLC0$00.00%−9,846−100.0%Sold out
Sigma Planning Corp0$00.00%−9,460−100.0%Sold out
Diametric Capital, LP0$00.00%−6,991−100.0%Sold out
Axq Capital, LP0$00.00%−6,742−100.0%Sold out
Integrated Advisors Network LLC0$00.00%−6,475−100.0%Sold out
Calamos Advisors LLC0$00.00%−6,316−100.0%Sold out
VGI Partners Ltd0$00.00%−6,000−100.0%Sold out
Qube Research & Technologies Ltd0$00.00%−5,648−100.0%Sold out
Squarepoint Ops LLC0$00.00%−5,496−100.0%Sold out
CoreCap Advisors, LLC0$00.00%−4,367−100.0%Sold out
Verition Fund Management LLC0$00.00%−4,091−100.0%Sold out
Forum Financial Management, LP0$00.00%−3,891−100.0%Sold out
Simplex Trading, LLC0$00.00%−3,884−100.0%Sold out
Oak Ridge Investments LLC0$00.00%−3,828−100.0%Sold out
Freestone Grove Partners LP0$00.00%−3,574−100.0%Sold out
Schonfeld Strategic Advisors LLC0$00.00%−3,505−100.0%Sold out
Occudo Quantitative Strategies LP0$00.00%−3,494−100.0%Sold out
City Center Advisors, LLC0$00.00%−3,338−100.0%Sold out
Journey Retirement Planning & Investment Management LLC0$00.00%−3,312−100.0%Sold out