Costco has become a beloved grocery destination, but the chain has changed a lot since the 1980s. Here's the biggest differences between Costco now and then.

Golf carts, saunas and sofas with price tags running into the thousands of dollars are now as common at Costco as the $1.50 hot dog, and the company said on its Thursday earnings call that shoppers ...

Costco and Walmart are two of the world's largest retailers.

Years of notable Costco underperformance relative to the S&P resulted in returns in the years that followed: After 2002: 2003 delivered 6.12 pp outperformance. After 2009: 2010 showed 9.26 pp. After ...