Trumpâs Ban on Chinese Stocks Roils Investors Executive order was meant to hit Chinaâs military, but has frustrated some U.S. investors The order bans Americans from trading the securities of dozens of Chinese companies such as China Mobile. Photo: Mark Schiefelbein/Associated Press By Jan. 10, 2021 5:30 am ET U.S. investors have borne the brunt of an executive order signed by President Trump that was meant to hit the Chinese military by curtailing access to American dollars. The order, which takes effect Monday, bans Americans from trading the securities of dozens of Chinese companies. People who invested in those stocks are upset after a confusing series of events over the past two weeks. During that time, U.S. officials, the New York Stock Exchange and brokerage firms sent mixed signals over which stocks would be prohibited and...