Exciting news: metro.news has merged with metro.co.uk! That means that as well as keeping up with all the latest news and features you love from Metro Newspaper you’ll also be joining the 23 million ...

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 ...

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