地面兵装板块12月17日涨0.34%，光电股份领涨，主力资金净流出2.95亿元

Core Viewpoint - The ground armament sector experienced a slight increase of 0.34% on December 17, with optical electronics leading the gains. The Shanghai Composite Index closed at 3870.28, up 1.19%, while the Shenzhen Component Index closed at 13224.51, up 2.4% [1][2]. Group 1: Market Performance - The ground armament sector rose by 0.34% on the previous trading day [1] - The Shanghai Composite Index increased by 1.19% to close at 3870.28 [1] - The Shenzhen Component Index saw a rise of 2.4%, closing at 13224.51 [1] Group 2: Capital Flow - The ground armament sector experienced a net outflow of 295 million yuan from main funds [2] - Retail investors contributed a net inflow of 374 million yuan [2] - Speculative funds saw a net outflow of 7.8214 million yuan [2]