Rational (RTLLF) Held by Superinvestors
Rational AG (RTLLF) is currently held by 1 superinvestors tracked by InsiderSet, with a combined reported market value of approximately $1.61M based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026.
Gardner Russo & Quinn is currently the largest disclosed institutional shareholder of RTLLF tracked by InsiderSet, reporting ownership valued at approximately $1.61M in its June 30, 2026 SEC Form 13F filing.
The top 10 institutional shareholders tracked on this page collectively account for approximately 100% of the total disclosed RTLLF value among the investors covered in this analysis. Major shareholders include Gardner Russo & Quinn, and several other long-term asset managers with concentrated positions in Rational AG (RTLLF).
This page ranks the largest institutional RTLLF 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 |
|---|---|---|---|---|---|---|---|
| Gardner Russo & Quinn | Thomas Russo | 0.02% | 2,200 | $1,611,024 | — | — | — |
Frequently asked questions about RTLLF
Who are the largest superinvestors holding RTLLF?
The largest superinvestors holding RTLLF in the latest SEC Form 13F filings include Gardner Russo & Quinn. InsiderSet ranks these superinvestors by their latest reported RTLLF position.
What does the RTLLF superinvestors page include?
This page tracks RTLLF positions reported by a curated group of notable institutional investors and fund managers through SEC Form 13F. Rational AG (RTLLF) on this page reflects disclosed 13F holdings among those superinvestors, not every institutional shareholder of the stock.
How many superinvestors hold RTLLF?
InsiderSet currently tracks 1 superinvestors reporting RTLLF holdings in the latest available 13F data. This is the curated set on this page, not the total number of institutions that own RTLLF.
How much RTLLF stock do superinvestors hold?
Superinvestors tracked by InsiderSet disclosed approximately $1.61M in RTLLF 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 RTLLF superinvestor holdings last updated?
The latest RTLLF 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 RTLLF 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 RTLLF position after the reporting date.
Are superinvestors buying or selling RTLLF?
Buying and selling can be analyzed by comparing RTLLF positions across consecutive 13F reporting periods. InsiderSet's RTLLF Ownership Changes page shows institutions that increased, reduced, initiated, or exited positions based on reported 13F holdings. View RTLLF ownership changes.
How have superinvestor RTLLF holdings changed over time?
InsiderSet tracks RTLLF holdings among these superinvestors across multiple 13F reporting periods, so holder counts, reported value, and reported shares can be compared over time.