工程机械板块1月23日涨0.9%，邵阳液压领涨，主力资金净流入1.87亿元

Group 1 - The engineering machinery sector increased by 0.9% on January 23, with Shaoyang Hydraulic leading the gains [1] - The Shanghai Composite Index closed at 4136.16, up 0.33%, while the Shenzhen Component Index closed at 14439.66, up 0.79% [1] - Shaoyang Hydraulic's stock price rose by 6.72% to 50.05, with a trading volume of 252,600 shares and a transaction value of 1.241 billion yuan [1] Group 2 - The engineering machinery sector experienced a net inflow of 187 million yuan from institutional investors, while retail investors saw a net outflow of 24.11 million yuan [2] - Major stocks like Yichang Heavy Industry and Hengli Hydraulic saw significant net inflows of 284 million yuan and 179 million yuan, respectively [3] - Shaoyang Hydraulic had a net inflow of 129 million yuan from institutional investors, but a net outflow of 77.53 million yuan from retail investors [3]