Connected for Better or Worse? The Role of Production Networks in Financial Crises

We study how production networks shape the severity of Sudden Stops.We build a small open economy model with collateral constraints and input-output linkages, derive a sufficient statistic that maps network structure onto the amplification of tradable shocks, and show that a planner optimally introduces sectoral wedges to reduce amplification.Using OECD inputoutput data and Sudden Stop episodes, we document systematic network differences between emerging and advanced economies and show they predict crisis severity.A calibrated threesector DSGE model disciplined by these differences reveals that endowing an advanced economy with an emerging-market production network moves most of the way toward the observed emerging-advanced Sudden Stop gap.