U.S. stocks moved higher in early trading Wednesday after slumping for six straight days amid concern about a slowing Chinese economy. Markets have been volatile in August on deepening unease over the ramifications of slowing growth in China, the world's second-largest economy and the driver of global growth over the past decade. Cameron International, a maker of equipment for the oil industry, jumped 43 percent after Schlumberger said it was buying the company in a cash-and-stock deal. The 10 sectors in the S&P 500 index moved higher, led by technology stocks. Japan's Nikkei 225 stock index rose 3.2 percent to 18,376.83, South Korea's Kospi gained 2.6 percent to 1,894.09 and Australia's S&P ASX/200 rose 0.7 percent to 5,172.80, helped by buying of resource-related shares. [...] Hong Kong's Hang Seng index fell 0.5 percent to 21,305.17, and mainland China's smaller Shenzhen Composite Index lost 3.1 percent.