This premium credit card giant's stock has retreated from all-time highs despite strong business fundamentals.

The armed man took the woman hostage during a suspected failed robbery at the American Express building in central London this morning. A Scotland Yard spokesman said: "At 3.15pm the gunman left ...

But for Ken Chenault, the CEO of financial-services giant American Express, how money ultimately changes hands does not alter the firm's fundamental mission – namely, to be the number one choice for ...