Stocks fell sharply on Friday, adding to their steep weekly losses, as investors assess the possibility of a trade war brewing between the U.S. and China. The Dow Jones industrial average dropped 425 points, with DowDuPont as the worst-performing stock. The 30-stock index also closed in correction, down 11.6 percent from its 52-week high. The S&P 500 declined 2.1 percent, with financials pulling back 3 percent. It also closed just outside correction territory. The Nasdaq composite fell 2.4 percent. The indexes, along with the Dow, had traded higher earlier in the session. "People are a little worried ahead of the ... (full story)