Making Money Minute with Ron Hiebert - Concentration & Returns
Diversification in a portfolio is important because it spreads your risk across many assets and lowers exposure to any one of them. The problem, is you seldom get market beating returns owning dozens or even hundreds of securities. Oversized gains require concentrated portfolios. For example, Bill Gates has a 50 billion dollar investment portfolio. 79% of it is in only 4 stocks - Microsoft, Waste Management, Berkshire Hathaway and Canadian National Railway. The stocks high quality lessens the risk, but the concentration danger that goes hand in hand with oversized returns is still there.
