Costco's Upside Is Limited Due to Valuation

Shares of Costco Wholesale Corp. (COST, Financial) have proven to be an exceptional investment historically. Over the past decade, the stock has delivered a total return of roughly 760%. Comparably, over the same period, the S&P 500 has delivered a total return of roughly 227%. Costco's strong historical performance versus the broader market over the past 10 years is especially impressive given the fact the retail sector has been fairly challenging. The SPDR S&P Retail ETF (XRT, Financial) has delivered a t ...