Decoding the Stock Market: The Vocabulary of Volatility

When the stock market is making large up and down moves on a regular basis, you may hear that we're in a "volatile" market, but what does that mean?

While the word volatility is often used to describe general stock market action, or big movements in a certain stock, there's quite a bit more to the concept of volatility than that. So, here's a look at what volatility really means, as well as the most important volatility-related information investors should know.

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Source Fool.com