Note: Our daily “S&P 500 Outlook, Forecast, and Trading plan for Friday, 05/17” will be posted around 8:30am EDT, Friday. THE GIST (“THE WHAT”) Building on Wednesday’s rally, the S&P 500 index closed higher for the third straight session buoyed by better-than-expected economic data, coupled with strong earnings by Walmart Inc. and Cisco Systems Inc. Brushing aside (more…)