地面兵装板块1月16日跌2.39%，银河电子领跌，主力资金净流出6.71亿元

Market Overview - The ground equipment sector experienced a decline of 2.39% on January 16, with Galaxy Electronics leading the drop [1] - The Shanghai Composite Index closed at 4101.91, down 0.26%, while the Shenzhen Component Index closed at 14281.08, down 0.18% [1] Stock Performance - Key stocks in the ground equipment sector showed varied performance, with the following notable changes: - Optoelectronics Co. (600184) closed at 19.77, up 0.82% with a trading volume of 123,100 shares [1] - Galaxy Electronics (002519) closed at 9.28, down 9.99% with a trading volume of 199,800 shares [2] - Northern Long Dragon (301357) closed at 142.81, down 2.57% with a trading volume of 32,300 shares [2] Capital Flow - The ground equipment sector saw a net outflow of 671 million yuan from institutional investors, while retail investors contributed a net inflow of 573 million yuan [2] - The following stocks had significant capital flow: - Galaxy Electronics experienced a net outflow of 44.17 million yuan from institutional investors, but a net inflow of 41.45 million yuan from retail investors [3] - Northern Long Dragon had a net outflow of 77.58 million yuan from institutional investors, with a net inflow of 62.69 million yuan from retail investors [3]