Chapter III: Changes in Daily Volume are tracked in time here. Time Series Analysis demonstrates Trends and Cyclical Patterns in the number of shares transacted. |
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Here is an explanation of the historical volume charts for PPG Industries, Inc.: The top chart plots the average daily volume on a monthly basis for PPG over the past 5 years. Blue marks the de-seasonalized trend, which is a least squares linear regression applied to the PPG prices after seasonal variations have been filtered out. Typical Seasonal Patterns might show a January Effect, and possibly some quarterly distortions due to the periodic release of financial reports. Cyclical Patterns represent longer term changes in trading volume that sometimes reflect the operations of the general business cycle. |
Refined Volume Trend Analysis for PPG : |
| In the news, Friday, February 18, 2011: An unfavorable condition has developed with Aetna Inc., ticker symbol AET. Also, there are breaking events concerning Dollar Tree, Inc. (DLTR) and First Niagara Financial Group Inc. (FNFG) |