世界银行：外国直接投资日益集中（英文版）

Using two decades of granular data on foreign direct investments, this study shows a consistent global rise in the concentration of cross-border investments within fewer multinational firms. This concentration is most prominent in developing economies, reaching record highs in recent years. Structural shifts into services do not stand out as the primary driver of variation in investment concentration across countries and over time. Instead, concentration has grown significantly more in destin