SoftBank Group reports Q3 net profit of $1.6B after its Vision Fund posted a $2.4B gain, as a jump in the value of its OpenAI investment helped offset losses (Arjun Kharpal/CNBC)

Arjun Kharpal / CNBC: SoftBank Group reports Q3 net profit of $1.6B after its Vision Fund posted a $2.4B gain, as a jump in the value of its OpenAI investment helped offset losses   —  SoftBank posted a $2.4 billion gain at its Vision Fund in the December quarter as a jump in the value of its OpenAI investment helped offset losses in some of its other bets.