Magnetar Financial LLC and affiliated reporting persons filed a Schedule 13G with the SEC on November 13, 2026, disclosing beneficial ownership of 800,000 Class A ordinary shares of ARC Group Securities Acquisition I as of September 30, 2026.

Key Highlights

  • Aggregate ownership: Each reporting person is disclosed as the beneficial owner of 800,000 Class A ordinary shares, par value $0.0001 per share, of ARC Group Securities Acquisition I.
  • Percent of class: The 800,000 shares represent approximately 7.23% of the total shares outstanding, based on approximately 11,060,000 shares outstanding as reported by the issuer.
  • Voting and dispositive power: All 800,000 shares are held with shared voting power and shared dispositive power; sole voting and sole dispositive power are each reported as 0.
  • Four reporting persons: The filing is made jointly by Magnetar Financial LLC, Magnetar Capital Partners LP, Supernova Management LLC, and David J. Snyderman, all based at 1603 Orrington Avenue, 13th Floor, Evanston, Illinois 60201.
  • Shares distributed across six funds: The 800,000 shares are held across Constellation Master Fund (224,000), Structured Credit Fund (176,000), Alpha Star Fund (168,000), Xing He Master Fund (136,000), Lake Credit Fund (64,000), and Waterfront Series A Fund (32,000).
  • Event date: The date of the event requiring the filing is reported as September 30, 2026.

Magnetar Financial's Ownership Position in ARC Group Securities Acquisition I

According to the Schedule 13G filed November 13, 2026, Magnetar Financial LLC serves as investment adviser to the Magnetar Funds and, in that capacity, exercises voting and investment power over the 800,000 Class A ordinary shares held across those fund accounts. Magnetar Capital Partners LP is disclosed as the sole member and parent holding company of Magnetar Financial. Supernova Management LLC is identified as the general partner of Magnetar Capital Partners, and David J. Snyderman is named as the administrative manager of Supernova Management.

The filing states that as of September 30, 2026, the 800,000 shares represent approximately 7.23% of the total shares outstanding. That percentage is calculated based on the approximately 11,060,000 shares outstanding as provided by the issuer in its Form 10-Q filed on September 8, 2026, according to the filing. The shares are spread among six funds: Constellation Master Fund (224,000 shares), Structured Credit Fund (176,000), Alpha Star Fund (168,000), Xing He Master Fund (136,000), Lake Credit Fund (64,000), and Waterfront Series A Fund (32,000).

The filing certifies, as required under Schedule 13G, that "the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer." The Class A ordinary shares carry CUSIP number G0511G109. The issuer's principal executive offices are listed as 398 S Mill Avenue, Suite 306, Tempe, AZ 85284.

What Was Disclosed

Magnetar Financial LLC and three affiliated entities filed a Schedule 13G reporting shared beneficial ownership of 800,000 Class A ordinary shares of ARC Group Securities Acquisition I, representing approximately 7.23% of shares outstanding as of September 30, 2026.