地面兵装板块9月16日跌0.7%，长城军工领跌，主力资金净流出6.31亿元

Market Overview - The ground weaponry sector experienced a decline of 0.7% on September 16, with Changcheng Military Industry leading the drop [1] - The Shanghai Composite Index closed at 3861.87, up 0.04%, while the Shenzhen Component Index closed at 13063.97, up 0.45% [1] Individual Stock Performance - Notable gainers included: - GanHua KeGong (Code: 000576) with a closing price of 11.28, up 2.08% and a trading volume of 112,200 shares [1] - TianZou Equipment (Code: 300922) closed at 24.20, up 2.07% with a trading volume of 41,600 shares [1] - Significant decliners included: - Changcheng Military Industry (Code: 601606) closed at 47.76, down 2.87% with a trading volume of 478,800 shares and a transaction amount of 2.294 billion [2] - BeiFang ChangLong (Code: 301357) closed at 129.05, down 1.59% with a trading volume of 60,400 shares [2] Capital Flow Analysis - The ground weaponry sector saw a net outflow of 631 million from institutional investors, while retail investors contributed a net inflow of 699 million [2][3] - The capital flow for individual stocks showed: - Galaxy Electronics (Code: 002519) had a net inflow of 682,000 from retail investors, despite a net outflow of 1.9656 million from institutional investors [3] - ST Emergency (Code: 300527) experienced a significant net outflow of 43.5261 million from institutional investors, but a net inflow of 26.9692 million from retail investors [3]