S&P 500 w 200 Day Moving Average Percent Bands

Using a simple technical indicator method of choosing buy/sell opportunities on the S&P 500, purchasing when the index rises above 101% of the 200 day moving average and selling when it drops below 99% of the same, the last "BUY" signal occurred on 1/3/2012.

With today's close of 1347.05, the last purchase in would amount to a 5.48% increase.