地面兵装板块1月27日涨1.48%，国科军工领涨，主力资金净流出1749.14万元

Market Performance - The ground armament sector increased by 1.48% compared to the previous trading day, with Guoke Military leading the gains [1] - The Shanghai Composite Index closed at 4139.9, up 0.18%, while the Shenzhen Component Index closed at 14329.91, up 0.09% [1] Individual Stock Performance - Guoke Military (688543) closed at 71.97, up 4.18% with a trading volume of 94,400 shares and a transaction value of 6.65 billion [1] - Jieqiang Equipment (300875) closed at 41.82, up 4.13% with a trading volume of 65,200 shares and a transaction value of 270 million [1] - Zhongbing Hongjian (000519) closed at 19.65, up 2.50% with a trading volume of 69,080 shares and a transaction value of 1.34 billion [1] - Beifang Changlong (301357) closed at 138.04, up 2.37% with a trading volume of 22,600 shares and a transaction value of 311 million [1] - Guodian Co. (600184) closed at 18.74, up 2.24% with a trading volume of 152,300 shares and a transaction value of 281 million [1] Capital Flow Analysis - The ground armament sector experienced a net outflow of 17.49 million from institutional investors and 19.19 million from speculative investors, while retail investors saw a net inflow of 36.68 million [1] - Zhongbing Hongjian had a net inflow of 54.46 million from institutional investors, but a net outflow of 60.51 million from retail investors [2] - Beifang Changlong saw a net inflow of 29.41 million from institutional investors, with a net outflow of 24.41 million from retail investors [2] - Jieqiang Equipment had a net inflow of 21.15 million from institutional investors, but a net outflow of 29.55 million from retail investors [2]