Market Performance - On August 18, the marine economy sector rose by 1.62% compared to the previous trading day, with Zhongli Haixun leading the gains [1] - The Shanghai Composite Index closed at 3728.03, up 0.85%, while the Shenzhen Component Index closed at 11835.57, up 1.73% [1] Top Gainers in Marine Economy Sector - Zhongli Haixun (300810) closed at 54.56, with a significant increase of 19.99% and a trading volume of 83,600 shares, totaling a transaction value of 4.56 billion [1] - Hailanxin (300065) closed at 23.13, up 11.58%, with a trading volume of 2.03 million shares and a transaction value of 443.57 million [1] - Blue Science and Technology (601798) closed at 10.71, increasing by 9.96%, with a trading volume of 166,000 shares and a transaction value of 173 million [1] Capital Flow Analysis - The marine economy sector experienced a net outflow of 476 million from institutional investors, while retail investors saw a net inflow of 907 million [2] - The top stocks with significant capital inflows from retail investors include Tianhai Defense (300008) with a net inflow of 118 million and Zhongli Haixun (300810) with a net inflow of 133 million [3] Individual Stock Performance - Tianhai Defense (300008) had a main capital net inflow of 244 million, but saw a net outflow of 126 million from speculative funds [3] - Zhongli Haixun (300810) had a main capital net inflow of 133 million, with a significant outflow of 89.90 million from speculative funds [3] - Blue Science and Technology (601798) recorded a main capital net inflow of 43.27 million, with a net outflow of 17.59 million from speculative funds [3]