Chinese memory firms GigaDevice Semiconductor and Montage Technology have emerged as new heavyweights in the domestic semiconductor industry, as these companies founded by US-returned Chinese engineers capitalise on the global memory supercycle. Since the two Shanghai-listed companies completed their dual listings in Hong Kong recently, investors have driven up the shares of GigaDevice and Montage by 151 per cent and 97 per cent, respectively. The companies’ listings in January and February...