Bio-rad Laboratories-a (BIO) Held by Superinvestors
BIO-RAD LABORATORIES-A (BIO) is currently held by 2 superinvestors tracked by InsiderSet, with a combined reported market value of approximately $1.01B 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 BIO tracked by InsiderSet, reporting ownership valued at approximately $765.21M 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 $954.29M, representing an estimated gain of +24.71% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 100% of the total disclosed BIO value among the investors covered in this analysis. Major shareholders include First Eagle U.S. Value, Ariel Appreciation Fund, and several other long-term asset managers with concentrated positions in BIO-RAD LABORATORIES-A (BIO).
This page ranks the largest institutional BIO 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 | 1.26% | 2,606,219 | $765,211,916 | $954,293,149 | +$189,081,233 | +24.71% |
| Ariel Appreciation Fund | John W. Rogers Jr. | 2.39% | 816,751 | $239,806,261 | $299,061,546 | +$59,255,285 | +24.71% |
Frequently asked questions about BIO
Who are the largest superinvestors holding BIO?
The largest superinvestors holding BIO in the latest SEC Form 13F filings include First Eagle U.S. Value and Ariel Appreciation Fund. InsiderSet ranks these superinvestors by their latest reported BIO position.
What does the BIO superinvestors page include?
This page tracks BIO positions reported by a curated group of notable institutional investors and fund managers through SEC Form 13F. BIO-RAD LABORATORIES-A (BIO) on this page reflects disclosed 13F holdings among those superinvestors, not every institutional shareholder of the stock.
How many superinvestors hold BIO?
InsiderSet currently tracks 2 superinvestors reporting BIO holdings in the latest available 13F data. This is the curated set on this page, not the total number of institutions that own BIO.
How much BIO stock do superinvestors hold?
Superinvestors tracked by InsiderSet disclosed approximately $1.01B in BIO 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 BIO superinvestor holdings last updated?
The latest BIO 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 BIO 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 BIO position after the reporting date.
Are superinvestors buying or selling BIO?
Buying and selling can be analyzed by comparing BIO positions across consecutive 13F reporting periods. InsiderSet's BIO Ownership Changes page shows institutions that increased, reduced, initiated, or exited positions based on reported 13F holdings. View BIO ownership changes.
How have superinvestor BIO holdings changed over time?
InsiderSet tracks BIO holdings among these superinvestors across multiple 13F reporting periods, so holder counts, reported value, and reported shares can be compared over time.