美股盘前，中概股多数上涨，哔哩哔哩涨约2%，百度涨约2%，小鹏汽车涨约3%。

Group 1 - The core point of the article highlights that most Chinese concept stocks are experiencing an upward trend in pre-market trading, with specific increases noted for companies like Bilibili, Baidu, and Xpeng Motors [1] Group 2 - Bilibili shares are up approximately 2% in pre-market trading [1] - Baidu shares have also increased by about 2% [1] - Xpeng Motors shows a rise of around 3% [1]