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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; 620 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: 620 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 2026620$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
Pinpoint Asset Management (Singapore) Pte. Ltd.1$640.00%+1New
Parkworth Wealth Management, Inc.2$1280.00%00.0%Unchanged
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
Rialto Wealth Management, LLC3$1930.00%+3New
IMA Wealth, Inc.4$2560.00%+4New
WealthTrak Capital Management LLC5$3210.00%−5−50.0%Reduced
DecisionPoint Financial, LLC5$3210.00%+5New
UMA Financial Services, Inc.7$4490.00%−5−41.7%Reduced
SJS Investment Consulting Inc.7$4490.00%−1−12.5%Reduced
Raleigh Capital Management Inc.8$5120.00%+8New
Twin Peaks Wealth Advisors, LLC7$5350.00%+7New
Arlington Trust Co LLC10$6400.00%+10New
Prestige Wealth Management Group LLC10$6410.00%00.0%Unchanged
Financial Management Professionals, Inc.11$7040.00%00.0%Unchanged
CVA Family Office, LLC12$7680.00%00.0%Unchanged
South State Corp.12$7690.00%−19−61.3%Reduced
DiNuzzo Private Wealth, Inc.13$8330.00%+4+44.4%Added
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
Hughes Financial Services, LLC13$9300.00%−153−92.2%Reduced
Cornerstone Planning Group LLC13$9590.00%00.0%Unchanged
Capital Advisors, Ltd. LLC10$1.00K0.00%+10New
Activest Wealth Management16$1.02K0.00%+14+700.0%Added
Bogart Wealth, LLC21$1.34K0.00%+21New
Atlantic Trust, LLC25$1.60K0.00%−35−58.3%Reduced
High Note Wealth, LLC25$1.60K0.00%−3−10.7%Reduced
Capital A Wealth Management, LLC25$1.71K0.02%+25New
MV Capital Management, Inc.27$1.73K0.00%−8−22.9%Reduced
Toth Financial Advisory Corp28$1.79K0.00%+28New
Avion Wealth34$2.00K0.00%+17+100.0%Added
Legacy Wealth Managment, LLC33$2.11K0.00%00.0%Unchanged
Legacy Investment Solutions, LLC33$2.11K0.00%+33New
CIBC Private Wealth Group, LLC39$2.50K0.00%+37+1,850.0%Added
Sachetta, LLC42$2.69K0.00%−34−44.7%Reduced
SBI Securities Co., Ltd.46$2.94K0.00%−395−89.6%Reduced
Valley National Advisers Inc50$3.00K0.00%00.0%Unchanged
Wolff Wiese Magana LLC49$3.14K0.00%00.0%Unchanged
NewSquare Capital LLC50$3.20K0.00%−2−3.8%Reduced
Sound Income Strategies, LLC50$3.20K0.00%00.0%Unchanged
Financial Network Wealth Advisors LLC52$3.33K0.00%00.0%Unchanged
Curio Wealth, LLC52$3.33K0.00%+52New
Brown Brothers Harriman & Co56$3.58K0.00%+56New
Hemington Wealth Management63$4.00K0.00%+26+70.3%Added
Fortitude Family Office, LLC63$4.03K0.00%+63New
JFS Wealth Advisors, LLC63$4.03K0.00%−6−8.7%Reduced
Parkside Financial Bank & Trust63$4.03K0.00%+20+46.5%Added
Mitsubishi UFJ Kokusai Asset Management Co., Ltd.65$4.16K0.00%00.0%Unchanged
GPS Wealth Strategies Group, LLC70$4.48K0.00%00.0%Unchanged
Colonial Trust Co71$4.54K0.00%00.0%Unchanged
Bell Investment Advisors, Inc74$4.74K0.00%−18−19.6%Reduced
TD Waterhouse Canada Inc.75$4.81K0.00%+75New
Private Trust Co NA80$5.12K0.00%00.0%Unchanged
Private Wealth Management Group, LLC88$5.63K0.00%00.0%Unchanged
Farmers & Merchants Investments Inc90$5.76K0.00%+8+9.8%Added
SRS Capital Advisors, Inc.95$6.08K0.00%+23+31.9%Added
Spire Wealth Management100$6.40K0.00%−162−61.8%Reduced
Geneos Wealth Management Inc.100$6.40K0.00%00.0%Unchanged
Ameritas Advisory Services, LLC100$6.40K0.00%+100New
Kozak & Associates, Inc.100$6.48K0.00%+100New
First Pacific Financial104$6.66K0.00%+22+26.8%Added
Rakuten Securities, Inc.107$6.85K0.00%+97+970.0%Added
Huntington National Bank119$7.62K0.00%−24−16.8%Reduced
Leonteq Securities AG136$8.71K0.00%+43+46.2%Added
Key Financial Inc137$8.77K0.00%00.0%Unchanged
Fairscale Capital, LLC132$9.76K0.01%00.0%Unchanged
Quarry LP168$10.8K0.00%−190−53.1%Reduced
Cullen/Frost Bankers, Inc.192$12.3K0.00%+192New
Aventura Private Wealth, LLC199$12.7K0.01%−75−27.4%Reduced
Fairway Wealth LLC200$12.8K0.00%00.0%Unchanged
Annis Gardner Whiting Capital Advisors, LLC215$13.8K0.00%+215New
Rothschild Investment LLC235$15.0K0.00%+5+2.2%Added
Essential Partners LLC237$15.2K0.01%+237New
First Horizon Advisors, Inc.243$15.6K0.00%+175+257.4%Added
Kestra Investment Management, LLC266$15.7K0.00%+157+144.0%Added
Larson Financial Group LLC248$15.9K0.00%−609−71.1%Reduced
Maryland Capital Advisors Inc.256$16.4K0.01%−227−47.0%Reduced
Sterling Capital Management LLC261$16.7K0.00%+149+133.0%Added
IFP Advisors, Inc195$18.2K0.00%+129+195.5%Added
Tradewinds Capital Management, LLC296$18.9K0.00%00.0%Unchanged
Private Wealth Asset Management, LLC339$21.7K0.00%00.0%Unchanged
Whittier Trust Co of Nevada Inc364$23.3K0.00%00.0%Unchanged
Rise Advisors, LLC405$25.9K0.01%+40+11.0%Added
True Wealth Design, LLC420$26.9K0.01%+260+162.5%Added
Riggs Asset Managment Co. Inc.421$27.0K0.01%+21+5.3%Added
Federation des caisses Desjardins du Quebec430$27.5K0.00%00.0%Unchanged
Covestor Ltd461$29.0K0.02%−1,701−78.7%Reduced
Ci Investments Inc.474$30.0K0.00%+58+13.9%Added
Bessemer Group Inc463$30.0K0.00%+238+105.8%Added
Massmutual Trust Co FSB475$30.4K0.00%+125+35.7%Added
Banque Cantonale Vaudoise491$31.0K0.00%00.0%Unchanged
TSFG, LLC496$32.0K0.01%00.0%Unchanged
Bartlett & Co. Wealth Management LLC500$32.0K0.00%00.0%Unchanged
PenderFund Capital Management Ltd.601$38.5K0.01%+302+101.0%Added
Hantz Financial Services, Inc.639$41.0K0.00%+596+1,386.0%Added
Meeder Asset Management Inc679$43.5K0.00%+679New
Orion Capital Management LLC703$45.0K0.02%00.0%Unchanged
EverSource Wealth Advisors, LLC777$49.7K0.00%+353+83.3%Added