Fortuna Mining (FSM) Held by Superinvestors
FORTUNA MINING CORP (FSM) is currently held by 2 superinvestors tracked by InsiderSet, with a combined reported market value of approximately $25.40M based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026.
Causeway Capital Management is currently the largest disclosed institutional shareholder of FSM tracked by InsiderSet, reporting ownership valued at approximately $17.63M 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 $18.99M, representing an estimated gain of +7.68% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 100% of the total disclosed FSM value among the investors covered in this analysis. Major shareholders include Causeway Capital Management, Renaissance Technologies LLC, and several other long-term asset managers with concentrated positions in FORTUNA MINING CORP (FSM).
This page ranks the largest institutional FSM 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 |
|---|---|---|---|---|---|---|---|
| Causeway Capital Management | Sarah Ketterer | 0.19% | 2,086,645 | $17,634,448 | $18,988,470 | +$1,354,022 | +7.68% |
| Renaissance Technologies LLC | Jim Simons | 0.01% | 919,400 | $7,768,930 | $8,366,540 | +$597,610 | +7.69% |
Frequently asked questions about FSM
Who are the largest superinvestors holding FSM?
The largest superinvestors holding FSM in the latest SEC Form 13F filings include Causeway Capital Management and Renaissance Technologies LLC. InsiderSet ranks these superinvestors by their latest reported FSM position.
What does the FSM superinvestors page include?
This page tracks FSM positions reported by a curated group of notable institutional investors and fund managers through SEC Form 13F. FORTUNA MINING CORP (FSM) on this page reflects disclosed 13F holdings among those superinvestors, not every institutional shareholder of the stock.
How many superinvestors hold FSM?
InsiderSet currently tracks 2 superinvestors reporting FSM holdings in the latest available 13F data. This is the curated set on this page, not the total number of institutions that own FSM.
How much FSM stock do superinvestors hold?
Superinvestors tracked by InsiderSet disclosed approximately $25.40M in FSM 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 FSM superinvestor holdings last updated?
The latest FSM 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 FSM 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 FSM position after the reporting date.
Are superinvestors buying or selling FSM?
Buying and selling can be analyzed by comparing FSM positions across consecutive 13F reporting periods. InsiderSet's FSM Ownership Changes page shows institutions that increased, reduced, initiated, or exited positions based on reported 13F holdings. View FSM ownership changes.
How have superinvestor FSM holdings changed over time?
InsiderSet tracks FSM holdings among these superinvestors across multiple 13F reporting periods, so holder counts, reported value, and reported shares can be compared over time.