Rambus (RMBS) Held by Superinvestors
RAMBUS INC (RMBS) is currently held by 2 superinvestors tracked by InsiderSet, with a combined reported market value of approximately $23.97M based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026.
Duquesne Family Office Llc is currently the largest disclosed institutional shareholder of RMBS tracked by InsiderSet, reporting ownership valued at approximately $22.96M in its June 30, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $16.05M, representing an estimated loss of -30.09% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 100% of the total disclosed RMBS value among the investors covered in this analysis. Major shareholders include Duquesne Family Office Llc, Sequoia Financial Advisors, and several other long-term asset managers with concentrated positions in RAMBUS INC (RMBS).
This page ranks the largest institutional RMBS shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Duquesne Family Office Llc | Stanley Druckenmiller | 0.53% | 173,000 | $22,964,000 | $16,054,400 | -$6,909,600 | -30.09% |
| Sequoia Financial Advisors | 0.01% | 7,542 | $1,001,126 | $699,898 | -$301,228 | -30.09% |
Frequently asked questions about RMBS
Who are the largest superinvestors holding RMBS?
The largest superinvestors holding RMBS in the latest SEC Form 13F filings include Duquesne Family Office Llc and Sequoia Financial Advisors. InsiderSet ranks these superinvestors by their latest reported RMBS position.
What does the RMBS superinvestors page include?
This page tracks RMBS positions reported by a curated group of notable institutional investors and fund managers through SEC Form 13F. RAMBUS INC (RMBS) on this page reflects disclosed 13F holdings among those superinvestors, not every institutional shareholder of the stock.
How many superinvestors hold RMBS?
InsiderSet currently tracks 2 superinvestors reporting RMBS holdings in the latest available 13F data. This is the curated set on this page, not the total number of institutions that own RMBS.
How much RMBS stock do superinvestors hold?
Superinvestors tracked by InsiderSet disclosed approximately $23.97M in RMBS holdings for Q2 2026. This figure is reported 13F value as of the filing period, not necessarily today's market value, and it covers the curated superinvestors on this page rather than every institutional filer.
When were RMBS superinvestor holdings last updated?
The latest RMBS superinvestor holdings on InsiderSet are based on SEC Form 13F filings for the quarter ended June 30, 2026. Form 13F filings are generally reported after the quarter ends, so the holdings shown represent the latest publicly disclosed positions rather than real-time holdings.
Are superinvestor RMBS holdings real-time?
No. Form 13F data is not real-time. It represents positions reported by these superinvestors as of the end of the reporting quarter. A superinvestor may have changed its RMBS position after the reporting date.
Are superinvestors buying or selling RMBS?
Buying and selling can be analyzed by comparing RMBS positions across consecutive 13F reporting periods. InsiderSet's RMBS Ownership Changes page shows institutions that increased, reduced, initiated, or exited positions based on reported 13F holdings. View RMBS ownership changes.
How have superinvestor RMBS holdings changed over time?
InsiderSet tracks RMBS holdings among these superinvestors across multiple 13F reporting periods, so holder counts, reported value, and reported shares can be compared over time.