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ACP Holdings Acquisition Corp. has a significant shareholder group led by Magnetar entities and David J. Snyderman. As of June 30, 2026, they collectively reported beneficial ownership of 1,600,000 Class A ordinary shares of ACGC, representing 7.29% of the outstanding Class A shares. These shares are held across several Magnetar-managed funds, including Constellation Master Fund, Structured Credit Fund, Alpha Star Fund, Lake Credit Fund, Xing He Master Fund, Waterfront Series A Fund, and Capital Master Fund.
The reporting persons have shared voting and dispositive power over all 1,600,000 shares, with no sole voting or dispositive power. The ownership percentage is based on 21,946,600 shares outstanding, as referenced from the issuer’s Form 10-Q. The filing is made jointly by Magnetar Financial LLC, Magnetar Capital Partners LP, Supernova Management LLC, and Mr. Snyderman.
ACP Holdings Acquisition Corp., a Cayman Islands-based blank check company, reported its first quarterly results since its April 2026 IPO. Total assets were $218.4 million as of June 30, 2026, including $217.4 million invested in a Trust Account for a future business combination and $746,223 in cash equivalents for operating needs.
The company generated net income of $1.17 million for the three months ended June 30, 2026, driven by $1.69 million of interest income on Trust investments and a gain from the change in fair value of the over-allotment option, partially offset by $603,119 of formation, general and administrative costs. All 21,461,600 publicly held Class A ordinary shares are classified as subject to possible redemption at $10.13 per share.
Working capital was $833,794, and management discloses that current liquidity is not sufficient to fund operations for at least one year at expected spending levels. If no initial business combination is completed within the 18‑month Completion Window ending October 8, 2027, the company will redeem public shares and liquidate, creating substantial doubt about its ability to continue as a going concern.
Adage Capital Management, L.P., Robert Atchinson, and Phillip Gross reported beneficial ownership of Class A Ordinary Shares of ACP Holdings Acquisition Corp. They collectively report 1,800,000 Class A shares, representing 8.20% of the class, with shared voting and dispositive power and no sole power.
The ownership percentage is based on 21,946,600 Class A shares outstanding as of May 14, 2026, as stated in the company’s quarterly report for the period ended March 31, 2026. The shares are held through Adage Capital Partners, L.P., with Adage entities acting as investment manager and general partners.