Dimensional Fund Advisors LP Reports 5.1% Stake in FONAR Corp (FONR)

Dimensional Fund Advisors LP filed a Schedule 13G/A on April 9, 2026, reporting a 5.1% stake in FONAR Corp (FONR). As of the event date of March 31, 2026, the investment advisor beneficially owns 315,471 shares of common stock. This represents a new significant reporting threshold compared to the previously reported 0.0% ownership. Dimensional Fund Advisors LP serves as an investment advisor to various registered investment companies, trusts, and accounts (collectively, the 'Funds'). In its capacity as advisor or manager, Dimensional possesses sole voting power over 312,499 shares and sole dispositive power over all 315,471 shares. The filing notes that while Dimensional may be deemed a beneficial owner under SEC rules, the securities are actually owned by the Funds, and Dimensional disclaims beneficial ownership of these shares. The acquisition was made in the ordinary course of business and not for the purpose of influencing or changing the control of the issuer.