American Express (AXP) closed at $323.09 in the latest trading session, marking a +2.16% move from the prior day. The stock's change was more than the S&P 500's daily gain of 1.56%. Meanwhile, the Dow gained 1.29%, and the Nasdaq, a tech-heavy index, added 2.21%. The credit card issuer and global payments company's stock has dropped by 2.78% in the past month, falling short of the Finance sector's loss of 2.31% and the S&P 500's gain of 0.41%.Analysts and investors alike will be keeping a close eye on the p ...