Anyone who is good with finances could probally answer this..

Hypothetical situation that will help me with my project:

I created a time machine where I can go back in time but only to march 14th 2006. I have 5,000 dollars to spend on any stock(s), my goal is to make the most money possible by investing in the company that will yield me the most net profit.

(I was trying to figure out how to find this out on my own, but I must not be looking right in the right places, thanks for the help)