US markets have been slowing down as news flows get mixed between Central bank actions and China news. The daily momentum crossed over to the sell side but the week momentum is strong in buy mode. Ths can lead to extentions in prices and whipsaws in near term prices action without changing trend. In case of a knee jerk reaction the 20dma at 3040 is a key support. At the top we should stretch to the trendline of the highs near 3130.