Three affiliated investment advisers filed a Schedule 13G on November 13, 2026, disclosing aggregate beneficial ownership positions in the Class A ordinary shares of Plutonian Acquisition Corp. II (NYSE:PLUN) as of September 30, 2026.

Key Highlights

  • Westchester Capital Management stake: Westchester Capital Management, LLC reported beneficial ownership of 636,030 Class A ordinary shares, representing 5.59% of the class.
  • Virtus Investment Advisers stake: Virtus Investment Advisers, LLC reported beneficial ownership of 584,725 shares, representing 5.14% of the class.
  • Westchester Capital Partners stake: Westchester Capital Partners, LLC reported beneficial ownership of 3,970 shares, representing 0.03% of the class.
  • Shares outstanding basis: All percentage calculations are based on 11,383,837 shares outstanding as of October 15, 2026, as reported in the issuer's quarterly report filed on that date.
  • Shared voting power: Westchester Capital Management and Virtus Investment Advisers each reported shared voting and dispositive power over 584,725 shares, with Virtus's amounts noted as also included in Westchester's totals.
  • Event trigger date: The date of the event requiring this filing was September 30, 2026, according to the filing.

Three Delaware-Organized Advisers Report Combined Positions in Plutonian Acquisition Corp. II

According to the filing, Plutonian Acquisition Corp. II is a Cayman Islands-incorporated acquisition company with its principal executive offices at 1216 Broadway, New York, NY 10001. The securities reported on are Class A ordinary shares with a par value of $0.0001 per share, identified by CUSIP number G71382108. The Schedule 13G was filed jointly by Westchester Capital Management, LLC, Westchester Capital Partners, LLC, and Virtus Investment Advisers, LLC, each organized under the laws of Delaware and each identified in the filing as an investment adviser.

The filing describes Virtus Investment Advisers, LLC as a registered investment adviser that serves as investment adviser to The Merger Fund, The Merger Fund VL, Virtus Westchester Event-Driven Fund, and Virtus Westchester Credit Event Fund. Westchester Capital Management, LLC is described as a registered investment adviser acting as sub-advisor to those same funds as well as JNL/Westchester Capital Event Driven Fund, JNL Multi-Manager Alternative Fund, and Principal Funds, Inc. - Global Multi-Strategy Fund. Westchester Capital Partners, LLC serves as investment adviser to Westchester Capital Master Trust. According to the filing, the funds directly hold ordinary shares of the company for the benefit of investors in those funds.

The filing states that Westchester Capital Management holds sole voting and dispositive power over 51,305 shares and shared voting and dispositive power over 584,725 shares, for a total of 636,030 shares. Virtus Investment Advisers holds no sole voting or dispositive power, with all 584,725 of its reported shares held under shared power. The filing notes that Virtus's amounts are also included within Westchester Capital Management's reported totals. Mr. Roy Behren and Mr. Michael T. Shannon are identified in the filing as Co-Presidents of both Westchester Capital Management and Westchester Capital Partners. The filing was signed on November 13, 2026, by CaSaundra Wu as Chief Compliance Officer for both Westchester entities and by James Sena as Chief Compliance Officer for Virtus.

What Was Disclosed

Three affiliated registered investment advisers jointly disclosed beneficial ownership positions in Plutonian Acquisition Corp. II Class A ordinary shares via a Schedule 13G filed November 13, 2026, covering a triggering event dated September 30, 2026, with Westchester Capital Management reporting the largest position at 636,030 shares, or 5.59% of the class.