The Economic Times

In 2006, an investor put $1,000 into Costco; 20 years later, the stake had grown to about $31,240 with dividends reinvested

A $1,000 Costco investment made 20 years ago would have grown to about $31,240 with dividends reinvested. The return shows the power of long-term compounding. Costcos membership model, customer loyalty and steady sales growth helped drive gains. Still, past performance is no guarantee that the stock will deliver similar returns again.