The STAR Market 50 Index closed 4.69% higher on June 17, reversing an initial decline, as the PCB and semiconductor sectors showed significant strength. The ChiNext Index and Shenzhen Component Index also posted gains of over 1%. The combined turnover of the Shanghai and Shenzhen stock exchanges reached 3.09 trillion yuan, marking an increase of 27.1 billion yuan from the previous session. In sector performance, the PCB concept saw a notable surge, with over ten stocks hitting their daily limit. Hongchang Electronics and Huazheng New Material were among the top performers, achieving multiple consecutive daily limit increases. The semiconductor industry also performed robustly, with companies like Shengmei Shanghai and Shannon Core Innovation reaching their 20% daily limit increases. Meanwhile, the coal sector faced a downturn, with several stocks declining amid a volatile correction.