地面兵装板块10月15日跌3.38%，北方长龙领跌，主力资金净流出11.17亿元

Market Overview - The ground armament sector experienced a decline of 3.38% on October 15, with North China Long Chariot leading the drop [1] - The Shanghai Composite Index closed at 3912.21, up 1.22%, while the Shenzhen Component Index closed at 13118.75, up 1.73% [1] Stock Performance - Notable stock performances include: - Tianzou Equipment (300922) closed at 27.51, up 1.89% with a trading volume of 58,700 shares [1] - North China Long Chariot (301357) closed at 145.32, down 7.97% with a trading volume of 89,100 shares and a transaction value of 1.276 billion [2] - Great Wall Military Industry (601606) closed at 51.88, down 7.36% with a trading volume of 964,200 shares and a transaction value of 5.009 billion [2] Capital Flow - The ground armament sector saw a net outflow of 1.117 billion from institutional investors, while retail investors contributed a net inflow of 942 million [2] - The capital flow for individual stocks indicates: - Great Wall Military Industry had a net outflow of 522 million from institutional investors [3] - North China Long Chariot experienced a net outflow of 108 million from institutional investors [3] - Retail investors showed a net inflow of 540 million into Great Wall Military Industry [3]