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This chart shows Volatility for AK Steel Holding Corporation, defined to be the price range as a portion of the average price: So, to derive the Daily Volatility on 2/18/2011 of 5.4%, the price range for the day (0.95) was divided by the average price (17.4). Daily Volatility (the daily range as a portion of the daily average price) is plotted in green. Blue is Weekly Volatility, which is the weekly range as a portion of the weekly average price. It is important to avoid confusing this with the weekly average of the daily volatility, which is a completely different concept. The red plot shows the actual price. The remaining marks on the plot correspond to the Volatility measured across several time intervals. Investors often make a distinction between the concept of Volatility, and the concept of Risk. Academics define them to be exactly equivalent, but as can be seen here, there is good reason to distinguish between the levels of volatility or risk experienced across different time frames. During 17 years, the Average Quarterly Volatility of AKS stock price has been 43% while the Average Daily Volatility has been 4%. |
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If you have ever seen a "yield curve" you should be able to understand the concept behind this "yield curve". Each Volatility Curve is a snapshot in time. From left to right, each position plots the Volatility associated with increasing intervals of time. However, as seen in this plot of the AKS Volatility Curve, the increase is not constant. |
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A frequency distribution of the green points on the first chart (the daily volatility) yields this histogram. |
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Similarly, the purple points on the top chart, the Quarterly Volatility Values, are subjected to frequency distribution here. |
Refined Volatility Risk Analysis for AKS : |
| Friday, February 18, 2011: We have news on Fiserv, Inc., ticker symbol FISV. Signs of an over-bought condition have become noticable. Also, there are breaking events concerning Zimmer Holdings, Inc. and D.R. Horton, Inc.. From the News Archive: (2/18/2011 ) Favorable events happened at Robert Half International Inc. and Southwestern Energy Company. Meanwhile, bad news came from McCormick & Company, Incorporated and Reynolds American, Inc.. |