X (Twitter) has rolled out a set of widgets for its iOS app, enabling users to add feeds to their Home screen as well as a real-time notification count to their Lock Screen. The Home screen widget ...

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 ...

Julia Kagan is a financial/consumer journalist and former senior editor, personal finance, of Investopedia. Anthony Battle is a CERTIFIED FINANCIAL PLANNER™ professional. He earned the Chartered ...

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