U.S. markets closed mixed on Wednesday after a busy day with economic reports including GDP data which showed the economy grew more than expected in the second quarter. Stocks were steady after the Fed's decision to stay on course of tapering asset purchases. Bond yields held to session highs after the announcement. The benchmark 10-year note is at its highest yield in 2 weeks. Twitter (TWTR) stock shot up nearly 20 percent. Shares rallied on its upbeat earnings report highlighting better-than-expected user growth. Wells Fargo Advisors shared their thoughts with clients to 'stay invested and look for opportunities to put sidelined funds to work.' Exxon Mobil (XOM), Conoco Philips (COP) and Tesla (TSLA) are among the many companies set to report earnings Thursday. TheStreet's Susannah Lee reports from New York.