While diversification is a crucial way to spread risk across multiple investments, over-diversification1 occurs when a portfolio owns too many investments. In this instance, there can be some potential "hidden" costs, including reduced return potential without a material reduction in risk.2 If we think of diversification as the cost investors incur to reduce the risk [...]

As we reviewed in the two previous posts, diversification is an effective way to reduce risk. If you own too many investments, however, there can be hidden costs without a material reduction in the risk of loss. These costs may include: Reduced returns which can increase the risk of not reaching your financial goals Unnecessary [...]