Alex Gerko, founder of British trading company XTX Markets, has become one of the richest people in the UK, according <a href="https://www.wsj.com/finance/alex-gerko-xtx-markets-ai-d155626a?mod=finance_lead_story">to</a> The Wall Street Journal. According to Forbes, Gerko's fortune grew <a href="https://www.forbes.com/profile/alexander-gerko/">by</a> 66% over the year to $12 billion, which ensured him seventh place in the list of British billionaires.