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Gen Z Trading Prodigy Wins Over Wall Street Backers for Startup

Yoyo Chang turned a hunch born in an English high school cafeteria into a payments app supported by serious, well-heeled investors.

Yoyo Chang outside Windsor Castle

Yoyo Chang outside Windsor Castle

Photographer: Carlotta Cardana for Bloomberg Markets

When Yoyo Chang first told his parents that he wanted to start his own technology venture, they were alarmed: This was not part of the plan.

Paul and Pauline Chang had emigrated to the U.K. from Taiwan in 2003 so their son could learn English and eventually pursue an international business career, preferably at a global investment bank. Sure enough, Chang excelled in school. He also fell in love with the stock market at the age of 13, raking in £250,000 ($326,650) in trading profits for his family by the time he went to college in 2018.