SoftBank

SoftBank Group is a Japanese multinational conglomerate and investment firm founded by Masayoshi Son, best known for placing large, high-conviction bets on transformative technology companies worldwide. Through its Vision Fund — one of the largest technology-focused investment vehicles ever assembled — SoftBank has backed a broad range of AI, internet, and semiconductor companies across multiple continents. The firm also owns Arm Holdings, a British chip-design company whose processor architectures power the vast majority of mobile devices globally and are increasingly central to AI hardware development.

In the current AI investment cycle, SoftBank has remained a prominent backer of leading AI companies, including participation in a landmark funding round for OpenAI. This positions SoftBank at the intersection of AI software and AI infrastructure, through both its investment portfolio and its ownership of Arm.

SoftBank's shares are publicly traded in Japan, and the stock is widely watched as a proxy for global technology sentiment. Its price tends to move sharply in response to both portfolio developments and macroeconomic or geopolitical events, reflecting the concentrated, high-stakes nature of SoftBank's investment strategy.