Lucas Downey is the co-founder of MoneyFlows, and an Investopedia Academy instructor. The Ulcer Index (UI) is a technical indicator that quantifies downside risk by measuring the depth and duration of ...

Investopedia contributors come from a range of backgrounds, and over 25 years there have been thousands of expert writers and editors who have contributed. Eric's career includes extensive work in ...

The three main differences between index funds and mutual funds are management style, investment objective and cost. Index funds tend to be the clear winner over the long term. Many, or all, of the ...