SoftBank Group Corp. has sold its entire stake in Nvidia Corp., locking in profits of $5.8 billion just as founder Masayoshi Son prepares a fresh wave of investments aimed at building a global ecosystem around artificial intelligence.

The Tokyo-based conglomerate had increased its Nvidia holdings to about $3 billion by March, and the windfall from that sale—combined with strong returns from its Vision Fund—helped SoftBank post a surprise ¥2.5 trillion ($16.2 billion) net income for the fiscal second quarter, far exceeding analyst expectations of ¥418.2 billion, according to Bloomberg News. Advertisement

In a move reflecting confidence in its growth trajectory, SoftBank also announced a 4-for-1 stock split, effective January 1, aimed at broadening retail investor participation.

Son, 68,

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