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Volatility is defined as the price range for a period, divided by the average price for the period: For instance, on 3/2/2010 the average price was 32.76 with a range of 0.98, indicating a Daily Volatility of 2.9%. 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. This is a different concept from the weekly average of daily volatility. For reference, the price is plotted in red. Volatility, as measured through various intervals, ( Daily, Weekly, Monthly and Quarterly) is plotted according to color. 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. Average Daily Volatility over the history of SNDK has been 6% in contrast to the Average Quarterly Volatility of 60%. |
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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 SNDK Volatility Curve, the increase is not constant. |
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This histogram is a frequency distribution of Daily Volatility, corresponding to the green points on the first chart on this page. |
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In a similar vein, the Frequency Distribution of the Quarterly Volatility is plotted here. This is the distribution of the values plotted in purple on the top chart from this page. |
Refined Volatility Risk Analysis for SNDK : |
| Friday, March 12, 2010: We have news on ConAgra Foods, Inc., ticker symbol CAG. Signs of an over-bought condition have become noticable. Also, there are breaking events concerning Fluor Corporation (NEW) and Amgen, Inc.. From the News Archive: (3/11/2010 ) Favorable events happened at Zimmer Holdings, Inc., Zimmer Holdings, Inc., and Walgreen Company. Meanwhile, bad news came from Southwestern Energy Company. |