Investors that take the time to understand the factors that make up Amex's moat will struggle to not come away impressed.

Longtime mall retailer Express filed for Chapter 11 bankruptcy protection on Monday, but a group of investors led by brand management firm WHP Global is looking to save the company by acquiring it.

American Express and Visa are both major credit card networks, but they’re certainly not the same. Using an American Express card, or Amex card, can imply a certain level of prestige and exclusivity.

When Express debuted about 40 years ago, the retailer was focused on making business casual apparel trendy, appealing, mainstream and accessible in malls - the most important sales channel at the time ...