Sou Hu Cai Jing·2025-08-13 09:28Market Performance - The large fund concept sector increased by 1.18% on August 13, with China Shipbuilding Gas leading the gains [1] - The Shanghai Composite Index closed at 3683.46, up 0.48%, while the Shenzhen Component Index closed at 11551.36, up 1.76% [1] Stock Highlights - China Shipbuilding Gas (688146) saw a significant rise of 20.01%, closing at 44.86 with a trading volume of 310,400 shares and a turnover of 1.376 billion [1] - Shenzhen South Circuit (002916) increased by 10.00%, closing at 153.78 with a trading volume of 188,800 shares and a turnover of 2.810 billion [1] - Other notable performers included Xingfu Electronics (688545) up 9.03%, Debang Technology (688035) up 6.54%, and Nanda Optoelectronics (300346) up 5.83% [1] Fund Flow Analysis - The large fund concept sector experienced a net outflow of 493 million from institutional investors and 364 million from retail investors, while retail investors saw a net inflow of 856 million [2][3] - The detailed fund flow for key stocks showed varying trends, with Shenzhen South Circuit experiencing a net inflow of 285 million from institutional investors but a net outflow of 187 million from retail investors [3]