一周龙虎榜出炉，9股获机构大手笔净买入！

Market Overview - On December 31, A-shares showed mixed performance with the three major indices fluctuating. The total market turnover was 2.07 trillion yuan, a decrease of 956 billion yuan compared to the previous trading day. Over 2,400 stocks closed higher, with 63 stocks hitting the daily limit up [1]. Sector Performance - The Xiaohongshu concept led the market, with stocks like BlueFocus and Wajinke hitting the daily limit up. Other sectors such as military electronics, airport transportation, and Kuaishou also saw gains. In contrast, sectors like chemical fibers, pharmaceutical commerce, and agriculture & forestry experienced significant declines [1]. Historical Highs - A total of 66 stocks reached historical closing highs, excluding newly listed stocks from the past year. The mechanical equipment, defense military, and automotive sectors had a notable concentration of stocks reaching new highs, with 13, 10, and 9 stocks respectively. The average increase for these stocks was 6.51%, with stocks like Tianming Technology and Shunhao Shares hitting the daily limit up [2][3]. Institutional Ratings - Seven stocks received buy ratings from institutions, including Shihai Shares and Guizhou Moutai. The average increase for these rated stocks was 1.62%, outperforming the Shanghai Composite Index. Notably, Baba Foods hit the daily limit up [4][5]. Institutional Trading Activity - This week, institutional trading saw net buying in 38 stocks, with nine stocks having net purchases exceeding 100 million yuan. Wanxiang Qianchao led with a net buy of 289 million yuan, experiencing a 26.19% increase and a turnover rate of 29.81% [6][7]. Net Selling by Institutions - Institutions net sold 48 stocks this week, with Aerospace Development seeing the highest net sell amount of 401 million yuan, despite a 17.22% increase in its stock price [8][9]. Cross-Market Activity - Among the stocks appearing on the institutional trading list, 40 also saw activity from northbound funds. There was a consensus in buying for stocks like Wanxiang Qianchao and China Satellite Communications, while BlueFocus and Shunhao Shares faced net selling from both institutions and northbound funds [10].