美股中概股盘前多数上涨，阿里巴巴涨4%

Core Viewpoint - The majority of Chinese concept stocks in the US pre-market are experiencing gains, indicating positive market sentiment towards these companies [1] Group 1: Company Performance - Alibaba's stock has increased by 4% [1] - Baidu's stock has risen by 3% [1] - NIO's stock has gone up by 2% [1] - Pinduoduo's stock has seen a modest increase of 0.8% [1] - Pony.ai's stock remains unchanged [1]