Vanguard Capital Management filed a Schedule 13G with the SEC on October 30, 2026, disclosing beneficial ownership of 4,305,787 shares of Applied Optoelectronics Inc common stock as of September 30, 2026.

Key Highlights

  • Aggregate beneficial ownership: Vanguard Capital Management reported beneficial ownership of 4,305,787 shares of Applied Optoelectronics Inc common stock.
  • Percent of class: The reported position represents 5.09% of the outstanding class of common stock, according to the filing.
  • Sole dispositive power: Vanguard Capital Management holds sole power to dispose of all 4,305,787 shares.
  • Sole voting power: The filing reports sole voting power over 652,746 shares, with shared voting power of zero.
  • Event date: The date of the event requiring this filing is reported as September 30, 2026.
  • Reporting affiliates included: The filing states that reported securities reflect holdings attributable to Vanguard Asset Management Limited, Vanguard Fiduciary Trust Company, Vanguard Global Advisers, LLC, and Vanguard Investments Australia Ltd.

Vanguard Capital Management's Reported Position in Applied Optoelectronics

According to the Schedule 13G filed on October 30, 2026, Vanguard Capital Management, an investment adviser organized in Pennsylvania and headquartered at 100 Vanguard Blvd, Malvern, PA 19355, reported beneficial ownership of 4,305,787 shares of common stock of Applied Optoelectronics Inc (NASDAQ:AAOI), representing 5.09% of the class. The triggering event date for the filing is listed as September 30, 2026.

The filing discloses that Vanguard Capital Management holds sole dispositive power over all 4,305,787 shares, while sole voting power is reported over 652,746 shares. Shared voting power 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 those beneficially owned by Vanguard Capital Management LLC and specified affiliates: Vanguard Asset Management Limited, Vanguard Fiduciary Trust Company, Vanguard Global Advisers, LLC, and Vanguard Investments Australia Ltd. The statement also covers securities held by Vanguard funds or sleeves thereof over which Vanguard Capital Management LLC exercises dispositive power.

The filing further states that "Vanguard Capital 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 single other person's interest in the reported securities exceeds 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 Capital Management filed a Schedule 13G disclosing a 5.09% beneficial ownership stake, equaling 4,305,787 shares, in Applied Optoelectronics Inc common stock, with the triggering event dated September 30, 2026.