Wall Street's main indexes soared on Wednesday, with the benchmark S&P 500 touching a one-week high, driven by lower-than-expected December core inflation data and robust quarterly earnings from major U.

U.S. stocks are ripping higher Wednesday after getting a shot of adrenaline from an encouraging update on U.S. inflation. Strong profit reports from Wells Fargo and other big U.S. banks are also helping to launch indexes toward their best day in two months.