How do you know if an investment is worthwhile? How can you be sure your investment decisions will amount to the ROI you need to retire? These are important questions every investor needs to ask ...

Most stock market investors focus on ordinary common shares of a company's stock, but there are other types of securities that can give investors different types of exposure to a company. Stock ...

Daniel Jassy, CFA, is an Investopedia Academy instructor and the founder of SPYderCRusher Research. He contributes to Excel and Algorithmic Trading. Robert Kelly is managing director of XTS Energy LLC ...