Tesla is on the verge of breaking into the S&P 500 index. Here's the last thing it needs to do to be eligible. (TSLA)

· *Tesla is on the verge of qualifying for inclusion in the S&P 500 index, one of the most popular stock indexes followed by investors, The Wall Street Journal first reported.*
· *The last criteria that Tesla needs to fulfill to be considered for inclusion in the index is profitability.*
· *The sum of its previous four...