SHENZHEN, CHINA - AUGUST 26: An aerial view of the Shenzhen skyline on August 26, 2020 in Shenzhen, Guangdong Province of China. (Photo by He Shaoping/VCG via Getty Images)Asia-Pacific markets opened lower Friday, tracking Wall Street declines on persistent concerns over lofty valuations in artificial intelligence stocks.Shares of major AI companies fell Thursday stateside, weighing down on the broader U.S. market. The biggest declines were from Nvidia, Microsoft, Palantir Technologies, Broadcom and Advance ...