At a Tokyo forum, Masayoshi Son says he "was crying" over SoftBank selling its $5.83B Nvidia stake but "I just had more need for money to invest in OpenAI" (Dylan Butts/CNBC)

Dylan Butts / CNBC: At a Tokyo forum, Masayoshi Son says he “was crying” over SoftBank selling its $5.83B Nvidia stake but “I just had more need for money to invest in OpenAI”  —  SoftBank Group founder Masayoshi Son on Monday downplayed the decision to offload the conglomerate's entire Nvidia stake …