A股午评：三大指数集体收涨，创业板指站上4200点

3日，A股三大指数开盘涨跌不一，随后集体上涨翻红，创业板指盘中刷新历史新高。截至午间收盘，沪指涨0.56%，深证成指涨2.31%，创业板指涨3.97%，站上4200点，科创50指数涨4.78%。

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