As G20 emerging markets account for almost one-third of world GDP and about one-quarter of global trade, spillovers from shocks originating in these economies can have important ramifications for global activity. Chapter 4 of the IMF’s World Economic Outlook April 2024 documents that, since 2000, spillovers from shocks in G20 emerging markets—particularly the People’s Republic of China (PRC)—have increased and are now comparable in size to those from shocks in advanced economies. Trade, notably through global value chains, is a key propagation channel. Spillovers generate a reallocation of economic activity across firms and sectors in other countries. Looking ahead, a plausible growth acceleration in G20 emerging markets, even excluding the PRC, could support global growth over the medium term and spill over to other countries. Policymakers in recipient economies should maintain sufficient buffers and strengthen policy frameworks to manage the possibility of larger shocks from G20 emerging markets.