NEW YORK--(BUSINESS WIRE)--American Express (NYSE: AXP) Chief Financial Officer, Jeffrey C. Campbell, will present at the Barclays Global Financial Services Conference in New York City, on Friday, September 18, 2015, at 11:15 a.m. (ET). Mr. Campbell’s presentation will be focused on the Company’s business strategy and financial performance. After the presentation, Mr. Campbell will participate in a question-and-answer session. A live audio webcast will be made available to the general public th