美国5月里奇蒙德联储制造业指数为-9，预期-9，前值-13。

Core Insights - The Richmond Fed Manufacturing Index for May is reported at -9, matching expectations and showing an improvement from the previous value of -13 [1] Group 1 - The current index value of -9 indicates a contraction in manufacturing activity in the region [1] - The index's alignment with expectations suggests stability in market forecasts despite the negative reading [1] - The improvement from -13 to -9 indicates a slight recovery in manufacturing sentiment compared to the previous month [1]