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Alice Zhang is an Editor with Investopedia. She works on stories about business and impact investing. She is a Certified VITA Advanced Tax Preparer. Doretha Clemons, Ph.D., MBA, PMP, has been a ...

Christopher A. Farrell is a bestselling author, and former Wall Street trader and market maker with nearly 30 years of experience, trading over $20 billion in transaction value over his career. Dr.