ACM Research (ACMR) shares have gained 57.4% in the past year, outperforming the broader Zacks Computer & Technology sector, the industry and the S&P 500 index’s increases of 31.5%, 33.7% and 20.3%.The company is riding on its strong positioning in the semiconductor fabrication space on the back of its robust cleaning and front-end processing tools, and differentiated technology. Its tools are ideal for fabricating foundry, logic and memory chips, including DRAM and 3D NAND-flash chips.ACM Research’s growin ...