FILE PHOTO: The logo of Swiss bank UBS is seen in Zurich, Switzerland October 25, 2018. REUTERS/Arnd Wiegmann/File Photo ZURICH (Reuters) - UBS, the world’s biggest wealth manager, has appointed corporate banking veteran Christian Rosset to lead a new wealth management team tasked with strengthening corporate offerings for entrepreneur clients, the bank told employees this week. With the new appointment, Swizterland’s biggest lender is seeking to boost business by increasing crossover between...