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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, Q2 2025

Institutional positions in Rambus Inc as of Jun 30, 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
459
+49 vs. Q1 2025
Shares held
97.1M
+715.5K (+0.7%) vs. Q1 2025
Total value
$6.22B
+$1.23B (+24.5%) vs. Q1 2025
New holders
88
191 more added
Sold out
39
131 more reduced

3 institutions that held it in Q1 2025 haven't filed for Q2 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q1 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 holdersQ2 2025: 459 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 heldQ2 2025: $6.22B
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, Q2 2025

Shares, value and share of portfolio for each institution holding Rambus Inc; share changes are against Q1 2025.

Institutions holding RMBS in Q2 2025
InstitutionSharesValue% of portfolioChange in sharesAction
Ameritas Advisory Services, LLC100$6.40K0.00%+100New
SRS Capital Advisors, Inc.95$6.08K0.00%+23+31.9%Added
Farmers & Merchants Investments Inc90$5.76K0.00%+8+9.8%Added
Private Wealth Management Group, LLC88$5.63K0.00%00.0%Unchanged
Private Trust Co NA80$5.12K0.00%00.0%Unchanged
TD Waterhouse Canada Inc.75$4.81K0.00%+75New
Bell Investment Advisors, Inc74$4.74K0.00%−18−19.6%Reduced
Colonial Trust Co71$4.54K0.00%00.0%Unchanged
GPS Wealth Strategies Group, LLC70$4.48K0.00%00.0%Unchanged
Mitsubishi UFJ Kokusai Asset Management Co., Ltd.65$4.16K0.00%00.0%Unchanged
JFS Wealth Advisors, LLC63$4.03K0.00%−6−8.7%Reduced
Parkside Financial Bank & Trust63$4.03K0.00%+20+46.5%Added
Fortitude Family Office, LLC63$4.03K0.00%+63New
Hemington Wealth Management63$4.00K0.00%+26+70.3%Added
Brown Brothers Harriman & Co56$3.58K0.00%+56New
Financial Network Wealth Advisors LLC52$3.33K0.00%00.0%Unchanged
Curio Wealth, LLC52$3.33K0.00%+52New
NewSquare Capital LLC50$3.20K0.00%−2−3.8%Reduced
Sound Income Strategies, LLC50$3.20K0.00%00.0%Unchanged
Wolff Wiese Magana LLC49$3.14K0.00%00.0%Unchanged
Valley National Advisers Inc50$3.00K0.00%00.0%Unchanged
SBI Securities Co., Ltd.46$2.94K0.00%−395−89.6%Reduced
Sachetta, LLC42$2.69K0.00%−34−44.7%Reduced
CIBC Private Wealth Group, LLC39$2.50K0.00%+37+1,850.0%Added
Legacy Wealth Managment, LLC33$2.11K0.00%00.0%Unchanged
Legacy Investment Solutions, LLC33$2.11K0.00%+33New
Avion Wealth34$2.00K0.00%+17+100.0%Added
Toth Financial Advisory Corp28$1.79K0.00%+28New
MV Capital Management, Inc.27$1.73K0.00%−8−22.9%Reduced
Capital A Wealth Management, LLC25$1.71K0.02%+25New
Atlantic Trust, LLC25$1.60K0.00%−35−58.3%Reduced
High Note Wealth, LLC25$1.60K0.00%−3−10.7%Reduced
Bogart Wealth, LLC21$1.34K0.00%+21New
Activest Wealth Management16$1.02K0.00%+14+700.0%Added
Capital Advisors, Ltd. LLC10$1.00K0.00%+10New
Cornerstone Planning Group LLC13$9590.00%00.0%Unchanged
Hughes Financial Services, LLC13$9300.00%−153−92.2%Reduced
Creative Financial Designs Inc14$8960.00%−9−39.1%Reduced
Caitong International Asset Management Co., Ltd14$8960.00%00.0%Unchanged
Bare Financial Services, Inc14$8960.00%00.0%Unchanged
DiNuzzo Private Wealth, Inc.13$8330.00%+4+44.4%Added
South State Corp.12$7690.00%−19−61.3%Reduced
CVA Family Office, LLC12$7680.00%00.0%Unchanged
Financial Management Professionals, Inc.11$7040.00%00.0%Unchanged
Prestige Wealth Management Group LLC10$6410.00%00.0%Unchanged
Arlington Trust Co LLC10$6400.00%+10New
Twin Peaks Wealth Advisors, LLC7$5350.00%+7New
Raleigh Capital Management Inc.8$5120.00%+8New
UMA Financial Services, Inc.7$4490.00%−5−41.7%Reduced
SJS Investment Consulting Inc.7$4490.00%−1−12.5%Reduced
WealthTrak Capital Management LLC5$3210.00%−5−50.0%Reduced
DecisionPoint Financial, LLC5$3210.00%+5New
IMA Wealth, Inc.4$2560.00%+4New
Rialto Wealth Management, LLC3$1930.00%+3New
CoreCap Advisors, LLC3$1920.00%−8−72.7%Reduced
HFM Investment Advisors, LLC3$1920.00%+2+200.0%Added
Bay Harbor Wealth Management, LLC3$1920.00%+2+200.0%Added
Parkworth Wealth Management, Inc.2$1280.00%00.0%Unchanged
Pinpoint Asset Management (Singapore) Pte. Ltd.1$640.00%+1New
Vaughan Nelson Investment Management, L.P.0$00.00%−562,813−100.0%Sold out
Schonfeld Strategic Advisors LLC0$00.00%−203,645−100.0%Sold out
Corebridge Financial, Inc.0$00.00%−169,347−100.0%Sold out
Ellsworth Advisors, LLC0$00.00%−74,709−100.0%Sold out
Barington Capital Group, L.P.0$00.00%−55,000−100.0%Sold out
Lisanti Capital Growth, LLC0$00.00%−51,925−100.0%Sold out
ExodusPoint Capital Management, LP0$00.00%−38,249−100.0%Sold out
Westpac Banking Corp0$00.00%−26,843−100.0%Sold out
Renaissance Technologies LLC0$00.00%−22,900−100.0%Sold out
Trexquant Investment LP0$00.00%−16,810−100.0%Sold out
Twin Tree Management, LP0$00.00%−16,172−100.0%Sold out
Legato Capital Management LLC0$00.00%−11,575−100.0%Sold out
K2 Principal Fund, L.P.0$00.00%−11,520−100.0%Sold out
Pinebridge Investments, L.P.0$00.00%−10,601−100.0%Sold out
Ieq Capital, LLC0$00.00%−10,485−100.0%Sold out
Unique Wealth Strategies, LLC0$00.00%−9,717−100.0%Sold out
United Services Automobile Association0$00.00%−7,171−100.0%Sold out
Equitable Trust Co0$00.00%−6,870−100.0%Sold out
EntryPoint Capital, LLC0$00.00%−6,558−100.0%Sold out
Oppenheimer Asset Management Inc.0$00.00%−5,762−100.0%Sold out
Summit Global Investments0$00.00%−5,005−100.0%Sold out
Fiduciary Financial Group, LLC0$00.00%−5,498−100.0%Sold out
Allianz Asset Management GmbH0$00.00%−4,700−100.0%Sold out
Snowden Capital Advisors LLC0$00.00%−4,341−100.0%Sold out
Ontario Teachers Pension Plan Board0$00.00%−4,135−100.0%Sold out
Jefferies Financial Group Inc.0$00.00%−4,028−100.0%Sold out
Headlands Technologies LLC0$00.00%−2,160−100.0%Sold out
Harvest Fund Management Co., Ltd0$00.00%−2,003−100.0%Sold out
McIlrath & Eck, LLC0$00.00%−804−100.0%Sold out
V-Square Quantitative Management LLC0$00.00%−508−100.0%Sold out
Eq Wealth Advisors, LLC0$00.00%−285−100.0%Sold out
Clear Street Markets LLC0$00.00%−223−100.0%Sold out
Mather Group, LLC.0$00.00%−113−100.0%Sold out
Cape Investment Advisory, Inc.0$00.00%−88−100.0%Sold out
Stephens Consulting, LLC0$00.00%−30−100.0%Sold out
TD Private Client Wealth LLC0$00.00%−16−100.0%Sold out
Global Financial Private Client, LLC0$00.00%−9−100.0%Sold out
TD Capital Management LLC0$00.00%−5−100.0%Sold out
Highline Wealth Partners LLC0$00.00%−3−100.0%Sold out
Glenmede Trust Co NA––––Not filed
Lindbrook Capital, LLC––––Not filed