This is a great article from Frank Armstrong III, in Forbes. He explores all of the different types of costs of investing that you should be looking for. It is worth reading.
Capitalism is a great thing for investors. In return for supplying their hard earned funds to the world’s markets, and accepting the risks that go along with it, they reap substantial rewards, but, market rewards are finite and investment expenses come off the top.
A prudent asset allocation plan needs funds to populate each asset class. Market baskets of stocks like index funds and exchange traded funds (ETFs) are essentially commodities to an informed investor. Because there is almost no evidence anywhere that managers who attempt to time markets or select individual stocks can actually improve results consistently, investors can easily eliminate a source of both cost and risk by simply doing without their services.