中国上证综指6月18日（周三）收盘上涨1.4点，涨幅：0.04%，报3388.81点；中国深证成指6月18日（周三）收盘上涨24.16点，涨幅：0.24%，报10175.59点；中国沪深300指数6月18日（周三）收盘上涨4.59点，涨幅：0.12%，报3874.97点；中国创业板指数6月18日（周三）收盘上涨4.79点，涨幅：0.23%，报2054.73点；中国科创50指数6月18日（周三）收盘上涨5.1点，涨幅：0.53%，报968.18点。

Market Performance - The Shanghai Composite Index closed at 3388.81 points on June 18, with an increase of 1.4 points, representing a gain of 0.04% [1] - The Shenzhen Component Index closed at 10175.59 points, up by 24.16 points, reflecting a rise of 0.24% [1] - The CSI 300 Index ended at 3874.97 points, gaining 4.59 points, which is a 0.12% increase [1] - The ChiNext Index closed at 2054.73 points, up by 4.79 points, indicating a 0.23% rise [1] - The STAR 50 Index finished at 968.18 points, with an increase of 5.1 points, marking a 0.53% gain [1]