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Aristeia Capital, L.L.C. reports beneficial ownership of 1,100,000 Class A ordinary shares of Dune Acquisition Corp II, representing approximately 7.6% of the outstanding class. The filing states the Reporting Person has sole voting and dispositive power over all 1,100,000 shares and that this percentage was calculated using 14,482,813 shares outstanding as of June 30, 2025, per the issuer's quarterly report.
The statement certifies the shares are held in the ordinary course of business and were not acquired to change or influence control of the issuer. The filing is a passive Schedule 13G disclosure showing a material (>5%) passive stake without an expressed intent to seek control.
Dune Acquisition Corp II is the issuer named in this Schedule 13G. Reporting persons AQR Capital Management, LLC, AQR Capital Management Holdings, LLC and AQR Arbitrage, LLC together report beneficial ownership of 779,980 Class A ordinary shares, representing 5.39% of the class. The filing shows the reporting persons have shared voting and shared dispositive power over these shares and no sole voting or dispositive power. The filing includes a certification that the securities were acquired and are held in the ordinary course of business and were not purchased to change or influence control of the issuer.
Dune Acquisition Corporation II completed its Initial Public Offering and deposited $144,109,375 into a Trust Account; as of June 30, 2025 the Trust held $144,982,839 invested in money market funds buying U.S. Treasury securities.
The company has not commenced operations and will not generate operating revenue until a Business Combination is completed. For the three months ended June 30, 2025 the company reported net income of $761,019 and for the six months net income of $712,925, primarily driven by $873,464 of interest income on Trust assets offset by formation and G&A costs of $112,445 (three months) and $160,539 (six months).
Key capital facts: gross IPO proceeds were $143,750,000 (14,375,000 Units), plus $2,000,000 from sale of 2,000,000 Private Placement Warrants; public Class A shares subject to redemption total 14,375,000 at a redemption value of $10.085 per share; a deferred underwriting fee of $5,750,000 is payable from the Trust. The Sponsor holds 5,750,000 Class B founder shares and a 15-month Completion Window applies to consummate a Business Combination.
Magnetar Financial LLC, Magnetar Capital Partners LP, Supernova Management LLC and David J. Snyderman have filed a Schedule 13G disclosing a 5.91 % passive stake in Dune Acquisition Corp II (Class A ordinary shares, CUSIP G2867S109, symbol IPODU). As of the event date 30 Jun 2025, the group beneficially owned 850,000 shares out of 14.375 million outstanding, crossing the 5 % reporting threshold but remaining below the 10 % level that could trigger greater regulatory scrutiny.
The position is spread across eight Magnetar-managed funds, with Constellation Master Fund holding the largest block (229,500 shares). All voting and dispositive powers are shared; none are held solely. The filing was signed 8 Aug 2025 and states that the shares were acquired in the ordinary course of business, with no intent to change or influence control of the issuer, qualifying the group to file on a passive 13G basis rather than an activist 13D.
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