Vanguard Portfolio Management LLC filed a Schedule 13G with the SEC on October 30, 2026, disclosing beneficial ownership of 2,241,292 shares of Post Holdings Inc common stock as of September 30, 2026.

Key Highlights

  • Aggregate beneficial ownership: Vanguard Portfolio Management reported holding 2,241,292 shares of Post Holdings Inc common stock, representing 5.09% of the class.
  • Sole dispositive power: The filing attributes sole power to dispose of all 2,241,292 shares to Vanguard Portfolio Management.
  • Sole voting power: Sole voting power is reported for only 35,719 shares, with shared voting power listed as zero.
  • Reporting person type: Vanguard Portfolio Management is classified as an investment adviser (type IA), organized in Pennsylvania.
  • Affiliates included: The filing states it reflects securities beneficially owned by Vanguard Portfolio Management LLC and affiliates Vanguard Fiduciary Trust Company and Vanguard Global Advisers, LLC.
  • Event date: The date of the event requiring the filing is reported as September 30, 2026.

Vanguard Portfolio Management Crosses 5% Threshold in Post Holdings Common Stock

According to the Schedule 13G filed October 30, 2026, Vanguard Portfolio Management LLC disclosed beneficial ownership of 2,241,292 shares of Post Holdings Inc (CUSIP 737446104) common stock, equal to 5.09% of the outstanding class. The triggering event date is listed as September 30, 2026. Post Holdings Inc is headquartered at 2503 South Hanley Road, Saint Louis, MO 63144, according to the filing.

The filing reports that Vanguard Portfolio Management holds sole dispositive power over all 2,241,292 shares, while sole voting power covers only 35,719 shares. Shared voting and shared dispositive power are each reported as zero. The filing notes, in accordance with SEC Release No. 34-39538 (January 12, 1998), that the reported securities include holdings by Vanguard funds or sleeves thereof over which Vanguard Portfolio Management LLC exercises dispositive power, as well as securities held by clients over which affiliates Vanguard Fiduciary Trust Company and Vanguard Global Advisers, LLC exercise dispositive and/or voting power.

The filing states that Vanguard Portfolio Management, "including investment companies registered under the Investment Company Act of 1940 and other managed accounts, have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, the securities reported herein," and that "no one other person's interest in the securities reported herein is more than 5%." The statement was signed by My Trieu-Gatt, Authorized Signatory and Head of Global Fund Administration, on October 30, 2026.

What Was Disclosed

Vanguard Portfolio Management LLC filed a Schedule 13G reporting beneficial ownership of 2,241,292 shares, or 5.09%, of Post Holdings Inc common stock as of September 30, 2026, with sole dispositive power over all reported shares and sole voting power over 35,719 shares.