Third Point was among the big winners from EV startup Rivian's blockbuster IPO earlier this month. : Third Point, the hedge fund of billionaire investor Daniel Loeb, scored a $300 million gain from electric-vehicle startup Rivian's blockbuster IPO earlier this month, according to the Financial Times. The FT reported that Third Point, which has $20 billion under management, won big after making a number of investments over the last year. The newspaper cited investor letters and a person with knowledge of the matter.