Sal Khan
Cane you sell something that you borrowed from someone else? Why, yes, you can and it is called shorting. Why would you do this? Well, you can now make money if the price goes down. Is this bad? This tutorial has your answers. Source: Khan Academy (www.khanacademy.org), used under the Creative Commons Attribution-NonCommercial-ShareAlike (CC BY-NC-SA) license. All Khan Academy content is available for free at www.khanacademy.org. Khan Academy does not endorse the World Public Library.
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