The S&P 500 closed flat on Friday, the Dow declined 259 points while the Nasdaq 100 advanced 0.5% as bank declines overshadowed tech gains. The financial sector was particularly affected by concerns surrounding New York Community Bancorp, which saw its shares tumble 8.2% following disappointing guidance. Bank of America and Wells Fargo both fell 1.7% and 1.3%, respectively, while Morgan Stanley an