Core Viewpoint - Several Hong Kong stocks experienced sharp declines following the announcement of mid-term results or share reduction news, indicating that disappointing earnings or share sales can trigger significant price drops in a market where many stocks have seen substantial gains this year [1][2]. Group 1: Company Performance - AAC Technologies reported a revenue of HKD 13.32 billion for the six months ending June 30, 2025, representing an 18.4% year-on-year increase, with a net profit attributable to shareholders rising by 63.1% to HKD 876 million [6]. - The company's gross margin decreased to 20.7%, down 0.8 percentage points year-on-year, primarily due to changes in product mix [6]. - The acoustic business generated revenue of HKD 3.52 billion, a 1.8% increase, but its gross margin fell by 2.7 percentage points to 27.2% [6]. - The optical business showed significant improvement, with revenue reaching HKD 2.65 billion, a 19.7% increase, and a gross margin improvement of 5.5 percentage points to 10.2% [7]. Group 2: Market Reactions - AAC Technologies' stock price fell over 14% after the mid-term results were released, with the lowest price reaching HKD 43.06 per share [3][4]. - China Resources Power's stock dropped over 8% following its mid-term results, which showed a profit attributable to shareholders of HKD 7.872 billion, a decrease of 15.9% from the previous year [8][11]. - The average on-grid electricity price for the company's coal-fired power plants fell by 6.1% to HKD 391.2 per megawatt-hour, contributing to the profit decline [11]. Group 3: Share Issuance and Reductions - The share price of WanGuo Gold Group fell sharply due to placement and reduction news, with a maximum drop of about 9% [12][13]. - The company announced a placement of 22.5 million shares at HKD 32.55 per share, raising approximately HKD 732 million, with half allocated for exploration and development projects [15]. - Lao Pu Gold also saw a significant drop in stock price, with a maximum decline of about 8% after announcing mid-term results showing a revenue increase of 249.4% to HKD 14.18 billion [12][17].