If Amazon ever wanted to join the Dow Jones Industrial Average, that would be another good reason to consider a stock split. Due to its high share price, Amazon would have an outsized impact on the Dow Jones Industrial Average; a stock split would lower Amazon's share price, making the company's contribution to the market more in line with its actual size. Amazon has shown little enthusiasm about being added to the Dow Jones Industrial Average, while just four of the world's ten largest businesses by market capitalization are included.