The biggest U.S. bank by assets kicks off third-quarter results on Friday, followed by Wells Fargo WFC.N, Citigroup C.N and Morgan Stanley MS.N. By Niket Nishant and Mehnaz Yasmin Oct 11 (Reuters) - The six biggest U.S. banks are expected to have set aside nearly $5 billion in the third quarter to cover future loan losses, Wall Street analysts said, as lenders brace for a potential global recession. Fading fiscal stimulus measures, increased geopolitical tensions and elevated inflation are some factors that could have led to a jump in provisions, Barclays analysts wrote in a note.