THE RISKS facing investors and the global economy are myriad and growing. Bloomberg asked three of the most visionary people in the financial industry what they're most worried about over the next five to 10 years: Cathie Wood, whose Ark Investment Management attracted billions of dollars in the past year after her tech-focused bets trounced the market in 2020; Mohamed El-Erian, chief economic adviser to Allianz SE and a Bloomberg Opinion columnist; and Scott Minerd, chair of Guggenheim Investments.