Last week, Trial Holdings, a Japanese discount supermarket chain, raised $258 million in Japan's largest IPO. The company operates over 300 supermarkets and has seen a 41% jump in shares since its debut. Founder Hisao Nagata, a 67-year-old, has become a billionaire with an estimated net worth of $1.2 billion. Nagata's retail success is driven by AI technology that analyzes customer shopping patterns and monitors inventory. The company's innovative IoT devices and tech-embedded 'Smart Stores' have contributed to its growth. Additionally, Trial Holdings announced collaboration with NEC Corp for an AI-powered facial recognition system and is considering integrating generative AI into its staff communication platform. Nagata, who comes from retailing roots, emphasizes customer focus and has expanded into real estate, restaurants, and resorts. This surge in wealth reflects Japan's rising stock market, with other entrepreneurs also entering the billionaire club. The success of Trial Holdings showcases the increasing influence of retail AI in today's market.