Dimensional Fund Advisors LP Reports 5.2% Stake in AdvanSix Inc. (ASIX)

On July 14, 2026, Dimensional Fund Advisors LP filed a Schedule 13G with the SEC, reporting a new 5.2% ownership stake in AdvanSix Inc. (ASIX). As of the event date on June 30, 2026, the investment advisor beneficially owns 1,407,349 shares of common stock. Dimensional Fund Advisors LP reported sole voting power over 1,380,649 shares and sole dispositive power over the full 1,407,349 shares. The filing clarifies that Dimensional Fund Advisors LP acts as an investment advisor or manager to various registered investment companies, trusts, and separate accounts (the "Funds"). While Dimensional may be deemed a beneficial owner due to its voting and investment power, the firm expressly disclaims beneficial ownership of these securities, noting that all reported shares are owned by the Funds themselves. This acquisition was made in the ordinary course of business and not for the purpose of changing or influencing the control of the issuer. This filing marks an increase from a previously reported 0.0% position, crossing the 5% disclosure threshold.