科创50 ETFs showed collective strength. At the time of writing, PP 科创50 (03151) rose 2.83% to HKD 12.73; Southern Science and Technology Innovation Board 50 ETF (03109) gained 2.75% to HKD 17.53; and Bosera 科创50 (02832) increased 2.4% to HKD 13.2.

As of May 20, the Science and Technology Innovation Board 50 Index extended its afternoon gains to over 3%, reaching a new historical high.

According to a notice on the China Securities Regulatory Commission website dated May 19, CITIC Securities and China Securities released the filing report for the initial public offering and listing tutoring of Yangtze Memory Technologies Co., Ltd. Previously, ChangXin Memory Technologies also updated its prospectus for the Science and Technology Innovation Board, re-entering the listing review process.

Guosheng Securities believes the AI wave is driving high prosperity in the memory sector, and the expansion processes of these two major memory companies are expected to accelerate significantly.

Zheng Xiaoxi, a fund manager at Southern Fund, expressed a firm positive outlook on the semiconductor self-reliance and control theme. The reasons are: first, the global semiconductor industry cycle is in an upward phase, with AI-driven demand sustaining high growth; second, downstream applications are diversifying, with AI Agents, humanoid robots, and on-device AI continuously driving upstream infrastructure investment; third, domestic memory chip prices are rising, and capacity expansion by leading memory companies has become a significant event-driven catalyst for the industry, with capital expenditure trending optimistically upward.