The list was further narrowed down to the very best firms by only selecting “repeater firms” (i.e. only the few firms that have appeared on the list at least three times during the last 10 years). They then compared the stock price growth in those repeater “best companies” and compared the stock price growth of the companies comprising the S&P 500. The results were phenomenal. The “best companies” with great HR saw their stock price rise an average of 109 percent, while the S&P 500s rose only 10 percent over the last 10 years. That means that the stock price growth of firms with great HR departments was nearly 10 times higher!