Day Trading

Day trading is tricky, whether your doing it for real or as an exercise like you are doing here. The primary problem is that over very short periods of time, individual stocks as well as the stock market indexes can be extremely volatile. You might as well throw darts at a dart board marked out with all of the stock symbols because it pretty much is sheer luck over such a short time frame anyway.

I'm not familiar with CNBC's Million Dollar Portfolio Challenge, so I don't know what their investing time horizon is like for this task. Depending on how long that horizon is, I would probably make different sets of choices for your million dollars. Over a longer horizon, I would probably do some research and then pick 20 stocks, $50,000 each, and then let them sit there and do nothing for several months as that is, historically, the best way to get a return on investment. Too much "in and out" of the market would kill you on commission costs alone anyway.