Dow's 237-point rally led by gains for shares of American Express, Visa

Shares of American Express and Visa are trading higher Friday afternoon, sending the Dow Jones Industrial Average into positive territory. Shares of American Express and Visa have contributed to the index’s intraday rally, as the Dow is trading 237 points higher (0.5%). American Express’s shares are up $21.41 (6.6%) while those of Visa hav…