Asia-Pacific markets mostly fell Wednesday, tracking Wall Street declines as concerns about artificial intelligence valuations continued to pressure tech stocks. Japan's benchmark Nikkei 225 index fell 0.36% at the open, while the Topix index lost 0.26%. Technology sector dragged the Nikkei 225 index lower in early trading, led by semiconductor testing equipment maker Advantest which fell more than 4%. Semiconductor firm Renesas also lost nearly 5%. South Korea's Kospi index declined 0.67%, and