By TheStreet.com Staff What Are Large-Cap Stocks? How Many Are There?Size means everything on Wall Street: The bigger the company, the more valuable it is perceived to be by the public. Large-cap companies have a market capitalization of between $10 billion and $200 billion; these are companies like McDonalds (MCD), T-Mobile (TMUS) and Dow Chemical (DOW), which are household names because they make the products and services we use every day. Large-cap stocks are also referred to asblue chips, because if you’ve ever played poker, you know that the blue poker chips are the most valuable. As the …