Japan's SoftBank Group is the latest major Asian stock to surge on investor enthusiasm around artificial intelligence. This week, shares of the technology-focused investment firm surged nearly 30% in two straight trading days as investors piled in. The stock was turbocharged by reports that OpenAI and SB Energy — SoftBank's energy and data-center subsidiary — are moving toward initial public offerings. SoftBank's share price surged nearly 20% on Thursday and closed 12% higher on Friday. The