US STOCKS-Wall St ends lower; S&P 500 in biggest 3-day drop since Jan By: Reuters: Company News April 07, 2014 at 16:30 PM EDT * Indexes down: Dow 1 pct; S&P 1.1 pct; Nasdaq 1.2 pct (Updates to close) Read More >> Related Stocks: Alcoa Bed Bath & Beyond Energen Corp Facebook Gilead Sciences JPMorgan Chase & Co Mallinckrodt plc Netflix Pfizer TripAdvisor Wells Fargo