This ETF tracks the S&P 500 Index, one of the most famous benchmarks in the world and one that tracks some of America's largest companies. As a result, investors should think of this as a play on mega and large cap stocks in the American market. These securities are usually known as 'Blue Chips' and are some of the most famous and profitable companies in the country, including well known names such as ExxonMobil, Apple, IBM, and GE. The fund is probably one of the safest in the equity world as the companies on this list are very unlikely to go under unless there is an apocalyptic event in the economy. However, these securities are unlikely to grow very much either as they are already pretty large and have probably seen their quickest growing days in years past, but most do pay out solid dividends which should help to ease the pain of this realization. Overall, VOO is a quality choice for investors seeking broad mega and large cap exposure and it is more diversified than most, containing just over 500 securities in total. As a result, this fund could serve as a building block for many portfolios making it an excellent choice for many buy and holders, especially for those looking to keep costs at a minimum.