Is It Too Late to Buy Costco Stock?

Costco (COST 1.11%) has been an unusually positive force in shareholders' portfolios. The retailer outperformed peers in its brutally competitive industry this past decade, delivering market share growth and steady earnings through a wide range of selling environments. Costco has also sent billions to investors through regular and "special" dividend payments, including the most recent $7 billion windfall that arrived in mid-January.You might think these factors all limit your potential returns from buying t ...