One of Trump's top selling points is he's a successful businessmen, better than most, who knows how to get things done. But it appears Trump has underperformed the S&P 500 over the last thirty years. Essentially had he invested in an unmanged index fund, he would have had a net worth of $10 billion more than he has today.
http://finance.yahoo.com/news/why-probab...20366.html
http://finance.yahoo.com/news/why-probab...20366.html