叮咚买菜(DDL.N)美股盘前短线拉升，一度涨近10%，现涨幅回落至5%。

Group 1 - The stock of Dingdong Maicai (DDL.N) experienced a pre-market surge, rising nearly 10% at one point before settling at a 5% increase [1] - The fluctuations in Dingdong Maicai's stock price indicate significant investor interest and market activity [1] Group 2 - The news highlights the volatility of Dingdong Maicai's stock, which is a common characteristic in the tech and e-commerce sectors [1] - The pre-market trading activity suggests potential investor optimism regarding Dingdong Maicai's future performance [1]