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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; 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 2026

Institutional positions in Rambus Inc as of Jun 30, 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
620
+71 vs. Q1 2026
Shares held
100.5M
−1.86M (−1.8%) vs. Q1 2026
Total value
$13.3B
+$4.50B (+51.2%) vs. Q1 2026
New holders
137
189 more added
Sold out
66
229 more reduced

8 institutions that held it in Q1 2026 haven't filed for Q2 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q1 2026: 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 2026: 620 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 2026: $13.3B
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 2026

Shares, value and share of portfolio for each institution holding Rambus Inc; share changes are against Q1 2026.

Institutions holding RMBS in Q2 2026
InstitutionSharesValue% of portfolioChange in sharesAction
CoreCap Advisors, LLC400$53.1K0.00%+400New
Covestor Ltd395$53.0K0.03%−190−32.5%Reduced
Persistent Asset Partners Ltd368$48.8K0.02%+368New
International Assets Investment Management, LLC393$48.7K0.00%+393New
PenderFund Capital Management Ltd.350$46.5K0.01%−50−12.5%Reduced
Private Wealth Asset Management, LLC339$45.0K0.00%00.0%Unchanged
Mitsubishi UFJ Kokusai Asset Management Co., Ltd.306$40.6K0.00%00.0%Unchanged
Essential Partners LLC274$36.4K0.02%+35+14.6%Added
First Horizon Corp267$35.4K0.00%+111+71.2%Added
Private Trust Co NA265$35.2K0.00%−23−8.0%Reduced
Banque Transatlantique SA260$34.5K0.00%+260New
Maryland Capital Advisors Inc.257$34.1K0.01%+257New
Steigerwald, Gordon & Koch Inc.236$31.3K0.00%00.0%Unchanged
Fortitude Family Office, LLC227$30.1K0.01%+125+122.5%Added
Acumen Wealth Advisors, LLC221$29.3K0.01%−54−19.6%Reduced
Strive Financial Group ,LLC210$27.9K0.01%00.0%Unchanged
Mather Group, LLC.204$27.1K0.00%00.0%Unchanged
Danske Bank A/S200$26.5K0.00%00.0%Unchanged
Aventura Private Wealth, LLC189$25.1K0.01%−10−5.0%Reduced
Tokio Marine Asset Management Co Ltd184$24.4K0.00%+184New
Huntington National Bank158$21.0K0.00%+63+66.3%Added
Abound Wealth Management155$20.6K0.00%00.0%Unchanged
Harbor Capital Advisors, Inc.141$19.0K0.00%−11−7.2%Reduced
Contravisory Investment Management, Inc.142$18.8K0.00%00.0%Unchanged
Key Financial Inc137$18.2K0.00%00.0%Unchanged
Fairscale Capital, LLC132$17.5K0.01%00.0%Unchanged
Whittier Trust Co of Nevada Inc153$16.2K0.00%−78−33.8%Reduced
Clear Street Markets LLC119$15.8K0.00%−681−85.1%Reduced
TD Waterhouse Canada Inc.127$15.7K0.00%+52+69.3%Added
Cedar Mountain Advisors, LLC115$15.3K0.00%00.0%Unchanged
CVA Family Office, LLC107$14.2K0.00%+14+15.1%Added
Crewe Advisors LLC105$13.9K0.00%−168−61.5%Reduced
Signature Equity Partners, LLC105$13.9K0.01%+105New
JFS Wealth Advisors, LLC103$13.7K0.00%+3+3.0%Added
Geneos Wealth Management Inc.100$13.3K0.00%00.0%Unchanged
Cassaday & Co Wealth Management LLC100$13.3K0.00%+100New
Wolff Wiese Magana LLC99$13.1K0.01%00.0%Unchanged
Parkside Financial Bank & Trust98$13.0K0.00%−42−30.0%Reduced
Harvest Fund Management Co., Ltd95$13.0K0.00%−34−26.4%Reduced
Farmers & Merchants Investments Inc97$12.9K0.00%00.0%Unchanged
Rossby Financial, LCC94$12.5K0.00%−68−42.0%Reduced
LifeSteps Financial, Inc.93$12.3K0.01%+93New
Basecamp Wealth Advisors LLC91$12.1K0.00%+85+1,416.7%Added
Private Wealth Management Group, LLC88$11.7K0.00%00.0%Unchanged
Bogart Wealth, LLC83$11.0K0.00%+62+295.2%Added
MJT & Associates Financial Advisory Group, Inc.75$9.96K0.01%+1+1.4%Added
Silver Grove Financial Group, Inc.74$9.82K0.01%+74New
Keating Financial Advisory Services, Inc.69$9.16K0.00%+2+3.0%Added
WPG Advisers, LLC68$9.03K0.01%−6−8.1%Reduced
Zions Bancorporation, National Association65$8.63K0.00%+38+140.7%Added
First Pacific Financial56$7.43K0.00%−57−50.4%Reduced
Sachetta, LLC56$7.43K0.00%+9+19.1%Added
Brown Brothers Harriman & Co56$7.43K0.00%00.0%Unchanged
Action Point Financial Planning, LLC57$7.17K0.00%+57New
Bell Investment Advisors, Inc51$6.77K0.00%−14−21.5%Reduced
LRI Investments, LLC50$6.64K0.00%−21−29.6%Reduced
Valley National Advisers Inc50$6.64K0.00%00.0%Unchanged
Strengthening Families & Communities, LLC43$5.71K0.00%+43New
Quarry LP43$5.71K0.00%+43New
Colonial Trust Co41$5.44K0.00%−9−18.0%Reduced
High Note Wealth, LLC41$5.44K0.00%00.0%Unchanged
Whittier Trust Co46$5.21K0.00%00.0%Unchanged
Financial Network Wealth Advisors LLC31$4.12K0.00%−14−31.1%Reduced
GW&K Investment Management, LLC30$4.00K0.00%+30New
Toth Financial Advisory Corp28$3.72K0.00%00.0%Unchanged
Rialto Wealth Management, LLC27$3.58K0.00%+20+285.7%Added
MV Capital Management, Inc.26$3.45K0.00%00.0%Unchanged
Atlantic Trust, LLC25$3.32K0.00%00.0%Unchanged
Cornerstone Financial Management LLC25$3.32K0.00%+4+19.0%Added
SJS Investment Consulting Inc.25$3.32K0.00%+6+31.6%Added
Tounjian Advisory Partners, LLC24$3.19K0.00%+24New
Avion Wealth28$3.00K0.00%00.0%Unchanged
Manchester Capital Management LLC22$2.92K0.00%+1+4.8%Added
Cromwell Holdings LLC22$2.92K0.00%+22New
Barrett & Company, Inc.20$2.65K0.00%00.0%Unchanged
Armstrong Advisory Group, Inc19$2.52K0.00%00.0%Unchanged
UMA Financial Services, Inc.19$2.52K0.00%+1+5.6%Added
DiNuzzo Private Wealth, Inc.17$2.26K0.00%+1+6.3%Added
Hughes Financial Services, LLC16$2.12K0.00%+2+14.3%Added
Bay Harbor Wealth Management, LLC16$2.12K0.00%+4+33.3%Added
Creative Capital Management Investments LLC16$2.12K0.00%+16New
Cornerstone Planning Group LLC20$2.08K0.00%+1+5.3%Added
JPL Wealth Management, LLC15$1.99K0.00%00.0%Unchanged
Creative Financial Designs Inc14$1.86K0.00%00.0%Unchanged
Bare Financial Services, Inc14$1.86K0.00%00.0%Unchanged
CBIZ Investment Advisory Services, LLC21$1.81K0.00%00.0%Unchanged
Dunhill Financial, LLC12$1.63K0.00%00.0%Unchanged
Salomon & Ludwin, LLC12$1.49K0.00%00.0%Unchanged
Financial Management Professionals, Inc.11$1.46K0.00%00.0%Unchanged
Quent Capital, LLC11$1.46K0.00%00.0%Unchanged
Chilton Capital Management LLC10$1.33K0.00%00.0%Unchanged
Prestige Wealth Management Group LLC10$1.33K0.00%00.0%Unchanged
HFM Investment Advisors, LLC10$1.33K0.00%+5+100.0%Added
Silicon Valley Capital Partners10$1.33K0.00%00.0%Unchanged
Dogwood Wealth Management LLC10$1.33K0.00%00.0%Unchanged
Marquette Asset Management, LLC8$1.06K0.00%−8−50.0%Reduced
Trust Co8$1.06K0.00%00.0%Unchanged
Raffa Wealth Management, LLC8$1.06K0.00%+7+700.0%Added
Capital Advisors, Ltd. LLC10$1.00K0.00%00.0%Unchanged
South State Corp.7$9300.00%+7New