Coattail Investing is a term used in the world of finance, particularly in the field of stock trading or trading of other financial assets, as also trading in commodities. This is a type of investing strategy and the strategy involves copying and following the styles of one or more successful traders. Thus, a person or a firm (say, mutual funds, investment banks, etc.) may follow the strategy of Warren Buffet and practicing the Coattail Investing in the style of Warren Buffet.