ZURICH—UBS Group AG Chief Executive Sergio Ermotti on Wednesday warned of a weak start to the year for the bank’s investment-banking and wealth-management units, citing “one of the worst first quarter environments in recent history.”The comments, prepared for a banking conference in London, sent UBS shares down, and underscored the challenges facing Switzerland’s biggest bank as it also confronts legal entanglements in France and the U.S....

Source: Wall Street Journal March 20, 2019 15:43 UTC