It's been a good year in the stock market so far; however, one group of companies that hasn't performed as well as others are those in the consumer staples sector. This includes companies making and selling essential products like food. The Consumer Staples Select Sector SPDR Fund XLP has provided a total return of only around 15% this year, while the S&P 500 is nearly at the 23% mark. However, some consumer staples stocks have massively outperformed the market this year. That includes the retail giant Walm ...