美股盘前，热门中概股普涨，百度涨超6%，阿里巴巴涨超3%，小鹏汽车涨超2.5%。

Core Viewpoint - The article highlights a significant increase in the stock prices of popular Chinese concept stocks in pre-market trading, indicating positive market sentiment towards these companies [1] Company Performance - Baidu's stock rose over 6% in pre-market trading, reflecting strong investor interest and confidence in the company's performance [1] - Alibaba's stock increased by more than 3%, suggesting a favorable outlook among investors [1] - Xpeng Motors saw its stock rise by over 2.5%, indicating a positive trend in the electric vehicle sector [1]