Japanese technology conglomerate SoftBank Group Corp. posted a 421.8 billion yen ($2.9 billion) profit in the April-June quarter, rebounding from a loss a year earlier as its investments benefited from the craze for artificial intelligence. Quarterly sales at Tokyo-based SoftBank Group, which invests heavily in AI companies like Nvidia and Open AI, rose 7% to 1.8 trillion yen ($12 billion), the company said Thursday. The group’s founder Masayoshi Son has emphasized that he sees a vibrant future in AI.