):A wunderkind's $45bn AI hedge fund drew Silicon Valley's elite before leverage-driven losses forced a scramble to raise cash. That track record helped him attract an unusually prominent roster of backers for a manager with no prior professional investing experience, according to the Journal. The fund's investor base also stood out structurally. People familiar with the matter said institutional investors had been wary of committing capital to a manager without an established track record. Those private holdings could provide a further source of gains if their valuations continue to climb, offering a potential offset to the losses and forced liquidation that defined the fund's public portfolio in July.