SoftBank Group 9984.T has tapped banks to prepare initial public offerings for its energy and infrastructure developer SB Energy and its planned autonomous robotics spinout Roze, as founder Masayoshi Son ramps up the Japanese group's push into artificial intelligence infrastructure amid strong investor appetite for companies underpinning AI buildout, according to two people familiar with the matter.SoftBank has hired JPMorgan JPM.N, Goldman Sachs GS.N, Morgan Stanley MS.N, Citi C.N and Mizuho for SB Energy's IPO, which could come as early as September, the sources said. SB Energy could seek a valuation of more than $50 billion in its market debut, the people said. At the same time, SoftBank has tapped Goldman Sachs, JPMorgan, Mizuho and Morgan Stanley for the IPO of its autonomous robotics company Roze, which will focus on building data centers and using robotics to improve the efficiency of AI infrastructure construction and is targeting a similar time frame, the sources added. 2026 is shaping up as a major year for IPOs, with a wave of mega AI listings including SpaceX, Anthropic and OpenAI expected to test investor appetite for large new issues. The Financial Times reported in April that SoftBank was exploring a roughly $100 billion AI and robotics spinoff and taking it public under the name Roze.