AI电源+数据中心+华为+PCB，机构大额净买入这家公司

Market Overview - The market experienced fluctuations, with the ChiNext Index dropping over 1% after previously rising more than 1.5% [1] - The total trading volume in the Shanghai and Shenzhen markets was 1.71 trillion, a decrease of 177 billion compared to the previous trading day [1] - Over 3,800 stocks in the market declined, indicating a broad market weakness [1] Sector Performance - The computing hardware sector showed localized activity, with Zhongfu Circuit hitting the daily limit up [1] - The banking sector performed strongly against the trend, with China Bank and Industrial and Commercial Bank of China reaching historical highs [1] - The photoresist sector continued its strong performance, with Guofeng New Materials achieving two consecutive limit ups and Baichuan Shares hitting the daily limit up [1] - Conversely, sectors such as beauty care, tourism and hotels, food, and retail saw collective weakness, with companies like Nanjiao Food and Tianma Technology hitting the daily limit down [1] - The Hainan and banking sectors had the highest gains, while beauty care, photovoltaic equipment, and food processing sectors experienced the largest declines [1] Institutional Activity - Institutional participation remained stable compared to the previous day, with 19 stocks having net buy/sell amounts exceeding 10 million [2] - There were 8 stocks with net purchases and 11 with net sales, including notable net purchases in Aerospace Development (85.35 million) and Jianglong Shipbuilding (60.79 million) [2] - Significant net sales were recorded for Longzhou Shares (89.33 million) and Daway Shares (74.03 million) [2]