US STOCKS-S&P, Nasdaq down after 2-day run up; biotechs, energy fall By: Reuters: Company News February 04, 2015 at 13:05 PM EST * Indexes: Dow up 0.1 pct, S&P off 0.4 pct, Nasdaq down 0.2 pct (Updates to midday, changes byline) Read More >> Related Stocks: Chipotle Mexican Grill Gilead Sciences Merck & Co Walt Disney