Magnite (MGNI) Held by Superinvestors
MAGNITE INC (MGNI) is currently held by 1 superinvestors tracked by InsiderSet, with a combined reported market value of approximately $12.73M based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026.
First Eagle U.S. Value is currently the largest disclosed institutional shareholder of MGNI tracked by InsiderSet, reporting ownership valued at approximately $12.73M 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 $17.04M, representing an estimated gain of +33.83% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 100% of the total disclosed MGNI value among the investors covered in this analysis. Major shareholders include First Eagle U.S. Value, and several other long-term asset managers with concentrated positions in MAGNITE INC (MGNI).
This page ranks the largest institutional MGNI 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 |
|---|---|---|---|---|---|---|---|
| First Eagle U.S. Value | Jean-Marie Eveillard | 0.02% | 670,788 | $12,731,556 | $17,038,015 | +$4,306,459 | +33.83% |
Frequently asked questions about MGNI
Who are the largest superinvestors holding MGNI?
The largest superinvestors holding MGNI in the latest SEC Form 13F filings include First Eagle U.S. Value. InsiderSet ranks these superinvestors by their latest reported MGNI position.
What does the MGNI superinvestors page include?
This page tracks MGNI positions reported by a curated group of notable institutional investors and fund managers through SEC Form 13F. MAGNITE INC (MGNI) on this page reflects disclosed 13F holdings among those superinvestors, not every institutional shareholder of the stock.
How many superinvestors hold MGNI?
InsiderSet currently tracks 1 superinvestors reporting MGNI holdings in the latest available 13F data. This is the curated set on this page, not the total number of institutions that own MGNI.
How much MGNI stock do superinvestors hold?
Superinvestors tracked by InsiderSet disclosed approximately $12.73M in MGNI 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 MGNI superinvestor holdings last updated?
The latest MGNI 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 MGNI 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 MGNI position after the reporting date.
Are superinvestors buying or selling MGNI?
Buying and selling can be analyzed by comparing MGNI positions across consecutive 13F reporting periods. InsiderSet's MGNI Ownership Changes page shows institutions that increased, reduced, initiated, or exited positions based on reported 13F holdings. View MGNI ownership changes.
How have superinvestor MGNI holdings changed over time?
InsiderSet tracks MGNI holdings among these superinvestors across multiple 13F reporting periods, so holder counts, reported value, and reported shares can be compared over time.