Building the Ideal Portfolio: How Many Stocks Do You Really Need?
Building the Ideal Portfolio: How Many Stocks Do You Really Need? Diversification is one of the cornerstones of modern portfolio theory (MPT), designed to reduce investment risk without sacrificing potential returns. It helps minimize the impact of any single stock's poor performance by spreading investments across a variety of assets. But how many stocks are needed to create a truly diversified portfolio? The answer depends on several factors, including the correlation between stocks, the size of the portfolio, and the investor's risk tolerance. In this article, we’ll explore the concept of diversification in detail, supported by empirical evidence, real-world examples, and case studies. 1. The Concept of Diversification At its core, diversification means spreading investments across different assets to minimize the impact of individual stock volatility. By holding a diversified portfolio, investors aim to mitigate unsystematic risk , which is specific to a...