Japan’s SoftBank Group, led by chief exec Masayoshi Son, is partnering with a Saudi sovereign-wealth fund to establish a multibillion-dollar tech investment fund. SoftBank is an ambitious tech investor, as evidenced by its recent deals with China’s Alibaba Group, mobile carrier Sprint and chip designer ARM Holdings. Today, the company “plans to invest at least $25 billion over the next five years through a fund dubbed the SoftBank Vision Fund,” reports The Wall Street Journal. “Saudi Arabia’s Public Investment Fund may contribute an additional $45 billion over the next five years as the fund’s lead partner.” SoftBank is in talks with additional global investors, who could “push the new fund up to $100 billion to become the world’s ‘biggest investor’ in technology over the next decade.”