http://www.indexindicators.com/charts/sp500-vs-put-call-ratio-index-20d-sma-params-3y-x-x/
Percentage of S&P 500 stocks above 20-Day Moving Average
http://www.indexindicators.com/charts/sp500-vs-sp500-stocks-above-20d-sma-params-2y-x-x/
Percentage of S&P 500 stocks above 20-Day Moving Average
http://www.indexindicators.com/charts/sp500-vs-sp500-stocks-above-20d-sma-params-2y-x-x/