瑞士4月ZEW投资者信心指数 -51.6，前值-10.7。

Core Insights - The Swiss ZEW Investor Confidence Index for April is reported at -51.6, a significant decline from the previous value of -10.7 [1] Summary by Category - Economic Indicators - The ZEW Investor Confidence Index indicates a sharp drop, suggesting a deteriorating sentiment among investors in Switzerland [1] - Comparative Analysis - The current index value of -51.6 represents a decline of 40.9 points compared to the prior value of -10.7, highlighting a notable shift in investor outlook [1]