In the following video, Motley Fool One analyst Jason Moser takes a question from a Fool reader, who asks, "On MSN Money, I noticed Volume and Average Volume. Volume changes by the minute ... is this volume stocks on the shelf for sale, or is it stocks that have sold? How can I use this to know to buy or sell? Please explain this in layman's terms."
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The article Ask a Fool: Volume and the Bid-Ask Spread originally appeared on Fool.com.
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