轨交设备板块1月8日涨0.61%，必得科技领涨，主力资金净流入2055.01万元

Group 1 - The rail transit equipment sector increased by 0.61% on January 8, with Bidder Technology leading the gains [1] - The Shanghai Composite Index closed at 4082.98, down 0.07%, while the Shenzhen Component Index closed at 13959.48, down 0.51% [1] - Bidder Technology's stock price rose by 9.99% to 44.14, with a trading volume of 65,900 shares and a transaction value of 285 million yuan [1] Group 2 - The rail transit equipment sector saw a net inflow of 20.55 million yuan from institutional investors, while retail investors had a net inflow of 9.55 million yuan [2] - Major stocks in the sector experienced varied capital flows, with Bidder Technology seeing a net inflow of 35.83 million yuan from institutional investors [3] - The overall trading activity in the sector indicated a mixed sentiment among retail and institutional investors, with some stocks experiencing significant outflows [3]