轨交设备板块8月27日跌2.51%，长青科技领跌，主力资金净流出4.77亿元

Core Insights - The rail transit equipment sector experienced a decline of 2.51% on August 27, with Changqing Technology leading the drop [1] - The Shanghai Composite Index closed at 3800.35, down 1.76%, while the Shenzhen Component Index closed at 12295.07, down 1.43% [1] Stock Performance - Notable gainers included Tongye Technology, which rose by 5.65% to a closing price of 31.98, and Bidder Technology, which increased by 4.81% to 27.68 [1] - Major decliners included Changqing Technology, which fell by 5.94% to 20.92, and Gaotie Electric, which decreased by 4.95% to 9.02 [2] Trading Volume and Capital Flow - The rail transit equipment sector saw a net outflow of 477 million yuan from institutional investors, while retail investors contributed a net inflow of 285 million yuan [2] - The trading volume for Tongye Technology was 83,400 shares, with a transaction value of 257 million yuan, while Changqing Technology had a trading volume of 72,700 shares and a transaction value of 157 million yuan [2][3] Capital Inflow Analysis - Among individual stocks, Yanao Co. saw a net outflow of 9.28 million yuan from institutional investors, while it had a net inflow of 2.52 million yuan from retail investors [3] - Bidder Technology experienced a net inflow of 5.69 million yuan from institutional investors, but a net outflow of 21.53 million yuan from retail investors [3]