JPMorgan analyst Jeffrey Zekauskas upgraded DuPont to Overweight citing a positive risk/reward with the stock down 24% year-to-date versus a 1% rise for the S&P 500 Index. The shares at current levels offer a free cash flow yield of about 7% for 2016, Zekauskas tells investors in a research note. The chemical company also plans to repurchase $4B in shares over the coming 18 months, which could help move the stock higher, or at a minimum provide stability, the analyst argues. He raised his price target for the stock to $60 from $58. DuPont closed yesterday down 25c to $53.03.