US STOCKS-Nasdaq boosted by biotechs; energy, banks weigh on Dow, S&P By: Reuters: Company News June 21, 2017 at 13:21 PM EDT * Dow down 0.17 pct, S&P off 0.05 pct, Nasdaq up 0.56 pct (Updates to early afternoon) Read More >> Related Stocks: Amgen Bank of America Caterpillar Celgene Corp Chevron Corp Exxon Mobil FedEx Corp Goldman Sachs Group Regeneron Pharmaceuticals