It Was the Best of Times, It Was the Worst of Times All about how missing the best market days (or the worst!) might affect your portfolio. Share | Related Content From Boats to Brokers From the Dutch East India Company to Wall Street, the stock market has a long and storied history. A Look at Diversification Diversification is an investment principle designed to manage risk, but it can't prevent against a loss. What Is My Risk Tolerance? This questionnaire will help determine your tolerance for investment risk.