In 1952, a guy by the name of Harry Markowitz published an article that put forth a new idea about how to be successful as an investor, based on historical data of the financial markets. His theory, called Modern Portfolio Theory, would eventually become recognized as a ground breaking shift in the investing world. Markowitz won (actually shared) the Nobel Prize in Economics in 1990 for his development of MPT. What is it and how does it affect you? Keep reading….