FYI: After being down as much as four percent on the month earlier this week, and then having the best two-day rally in years on Wednesday and Thursday, the S&P 500's performance this month seems anything but typical. However, when you compare the month to the average December pattern, the month has been relatively normal. Regular readers of our site know we focus a lot on seasonality and historical trends in our analysis. While these are by no means the only type of analysis you should use in your investment decisions, we feel it is important to know the historical trends. History may not always repeat itself, but just as kids will share similar traits with their parents, market trends one year often look a lot like the trends that preceded them in the past.
Regards,
Ted
http://www.bespokeinvest.com/thinkbig/2014/12/19/a-typical-december.html?printerFriendly=true