US election result adds to anxiety over how long investment boom will last Expanding AI investment has been the biggest driver of U.S.
US election result adds to anxiety over how long investment boom will last Expanding AI investment has been the biggest driver of U.S. economic growth and stock market gains. (Source photos by Nikkei, AP) TOKYO -- Investors are weighing the prospect of slower U.S. artificial-intelligence investment after the Democratic Party's sweeping midterm election win, which could turn the currency market tide in the yen's favor.