大智慧海工装备概念指数涨幅超2%。个股中，江龙船艇20cm涨停，亚星锚链、航天发展、中船防务涨 停。消息面上，英国克拉克森研究公司最新数据显示，今年前三季度我国海工装备新承接订单金额、交 付订单金额、手持订单金额分别占国际市场份额的60%、50.8%和61.9%，继续位居世界第一。 ...

Group 1 - A-shares saw a total of 45 stocks hitting the daily limit up and 12 stocks hitting the limit down during the first half of the trading day on November 19 [1] - The aquaculture sector was particularly active, with Zhongshui Fishery achieving a four-day limit up, and Kaichuang International and Dongfang Ocean also seeing significant gains [1] - The marine engineering equipment sector strengthened, with stocks like Yaxing Anchor Chain and Yaguang Technology hitting the limit up [1] Group 2 - ST Zhongdi achieved an impressive 21 consecutive limit up days, while Guosheng Technology recorded 6 limit ups in 8 days [1] - Other notable stocks include Aerospace Development and Huaci Co., both achieving four consecutive limit ups, and ST Xuefa with three limit ups over four days [1] - Stocks such as Inspur Software and Rongji Software also saw three consecutive limit ups, while Yingli Automotive and Taiyong Changzheng recorded two limit ups over four days [1] Group 3 - Sanmu Group and Dongbai Group faced consecutive limit down days, indicating a downturn in their stock performance [2] - Huiyuan Communication and *ST Ningke also hit the limit down, reflecting challenges in their market positions [2]

Group 1 - The marine engineering equipment sector saw an increase of 1.12%, ranking 8th among concept sectors, with 104 stocks rising, including notable gainers such as JuLi SuoJu, XingWang YuDa, and HuiJin Tong reaching their daily limit up [1][2] - The top gainers in the marine engineering equipment sector included TianLi Composite, AnNuoQi, and QianNeng HengXin, with increases of 16.78%, 9.71%, and 8.59% respectively [1] - The sector experienced a net inflow of 480 million yuan from main funds, with 75 stocks receiving net inflows, and 7 stocks exceeding 100 million yuan in net inflow, led by XueRen Co. with 621 million yuan [2][3] Group 2 - The top stocks by net inflow ratio included XingWang YuDa, JuLi SuoJu, and ShenKai Co., with net inflow ratios of 54.30%, 36.53%, and 24.38% respectively [3] - The marine engineering equipment sector's net inflow rankings highlighted XueRen Co. with a daily increase of 9.98% and a turnover rate of 51.98%, followed by JuLi SuoJu and YouFu Co. with increases of 10.04% and 9.98% respectively [3][4] - Other notable stocks in the sector included AnNuoQi with a 9.71% increase and a turnover rate of 21.74%, and ShenKai Co. with a 10.00% increase and a turnover rate of 24.23% [4][5]