Yushu Technology began trading on Shanghai's STAR Market on Aug. 19 and surged well above its offer price in its debut session. TradingBeats, formerly Hyperinsight, said the stock rose as high as 1,100 yuan intraday and was last trading at 883.87 yuan, up 486.1% from its 150.8 yuan issue price. The move points to strong early demand for the newly listed shares on China's technology-focused board.