A股港口航运股逆势拉升，南京港涨停

Core Viewpoint - A-shares in the port and shipping sector experienced a significant rally, with Nanjing Port hitting the daily limit and other companies like Ningbo Maritime and China National Offshore Oil Corporation also seeing substantial gains, following the implementation of special port fees for U.S. vessels by China [1]. Group 1: Stock Performance - Nanjing Port (002040) saw a price increase of 10.04%, with a total market capitalization of 6.099 billion and a year-to-date increase of 91.38% [2]. - Ningbo Maritime (600798) rose by 9.61%, with a market cap of 5.369 billion and a year-to-date increase of 47.52% [2]. - China National Offshore Oil Corporation (920571) increased by 7.00%, with a market cap of 6.198 billion and a year-to-date increase of 84.46% [2]. - Haixia Co. (002320) experienced a rise of 5.26%, with a market cap of 26.4 billion and a year-to-date increase of 81.53% [2]. - Lianyungang (601008) saw a 5.06% increase, with a market cap of 7.99 billion and a year-to-date increase of 70.03% [2]. - Ningbo Ocean (601022) increased by 3.85%, with a market cap of 13.8 billion and a year-to-date increase of 33.89% [2]. Group 2: Market Signals - The MACD golden cross signal has formed, indicating a positive trend for these stocks [2].