It's fairly obvious what the trader's mind set is effecting our short term value, they are shorting, or trading, over-bought areas of the upper Bollinger Band. The upper band is mostly reached on buying surges on anticipation of news or news itself. The public needs this perspective to avoid over-paying during these run-ups as the insider trading community stands always ready to give them a haircut each time they buy near or at these levels.

http://bigcharts.marketwatch.com/quickchart/quickchart.asp?symb=ca%3Aprb&insttype=Stock&freq=1&show=&x=40&y=12