The memory chip sector is trading sharply higher after Samsung Electronics reported record-breaking second-quarter earnings, driven by surging demand for AI-related memory products. The company's operating profit increased 1,814% year-over-year, with its High Bandwidth Memory (HBM) business showing particularly strong momentum. This powerful result reinforces the ongoing narrative of a memory 'supercycle' fueled by AI infrastructure buildouts and has overshadowed recent concerns from SK Hynix's earnings miss earlier in the week.