This might be Wall Street's safest high-octane income stock.One of the best aspects of putting your money to work on Wall Street is that you don't have to conform to any blueprint. With thousands of publicly traded companies and exchange-traded funds (ETFs) to choose from, there's a very high probability of finding one or more securities that matches your investment goals and risk tolerance.But among the countless ways investors can build their wealth on Wall Street, few have proven more successful over lon ...