January 2020
Beginner to intermediate
432 pages
11h 24m
English
Content preview from Python for Finance Cookbook
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Fact 5
This fact states that most measures of asset volatility are negatively correlated with their returns. To investigate it, we used the moving standard deviation (calculated using the rolling method of a pandas DataFrame) as a measure of historical volatility. We used windows of 21 and 252 days, which correspond to one month and one year of trading data.
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