Chinese stock markets experienced mixed performance from August 11 to August 15, 2025. The Shanghai Composite Index showed steady gains, climbing above 3,700 points to reach a near four-year high and surpassing last October's peak, with multiple days of increases including a 0.48% rise on August 14. The Shenzhen Component and ChiNext indexes also advanced, with ChiNext posting notable gains of up to 3.62% on August 13. Market turnover on the Shanghai and Shenzhen stock exchanges exceeded 2 trillion yuan ($300 billion) for two consecutive days, marking the highest trading volumes since February 2025. In Hong Kong, the Hang Seng Index fluctuated, reaching an intraday high above 25,000 points and peaking with gains over 2.5% on August 13 before declining by 0.37% at close on August 14 and continuing downward on August 15. The Hang Seng Tech Index showed similar volatility, rising over 3.5% on August 13 but falling by nearly 1% on August 14 and over 1% on August 15. Tencent shares rose over 2% to HK$573, the highest since June 2021, supported by strong quarterly revenue from Tencent Music Entertainment, which saw its shares open up 12.8%. Additionally, Innogen, a Chinese biotech company focused on obesity drugs, surged nearly 296% in its Hong Kong trading debut on August 15. Overall, the markets reflected robust trading activity amid fluctuating investor sentiment.