Professional investors now control the markets, whereas institutional investors such as pension funds, endowments, foundations, and wealthy family offices have trillions of dollars at their disposal to invest. The correct strategies for investors with active management expertise fall on the opposite end of the spectrum. Every investment plan and portfolio is going to be different because every individual or organization has unique circumstances and cash flow needs. In this chapter, the author describes his own experience in the investment industry. The chapter claims that many of the best academically tested evidence-based investment strategies from the past—once only reserved for the wealthy elite at a very high cost—would soon become available to all investors through low-cost exchange-traded funds (ETFs) and mutual funds that could be instituted on a systematic and quantitative basis. An ETF is very much like a mutual fund which allows the user to hold a number of different securities under a single fund structure. The basic investment principles apply to all investors, regardless of the size of their portfolio. The hard part is following them, when those around cannot.