货币政策跨境传导的 美元渠道

Core Viewpoint - The dollar channel fundamentally strengthens the asymmetry and pro-cyclicality of the global financial cycle, complicating policymakers' choices regardless of whether the dollar is strong or weak [1][8] Group 1: Dollar Channel as a Policy Transmission Mechanism - The dollar channel serves as an important supplement to traditional monetary policy transmission mechanisms, reflecting deeper changes in global risk appetite and financing conditions [1][5] - Empirical evidence shows that the dollar exchange rate itself constitutes an independent risk preference transmission channel, influencing capital flows and risk premiums [1][5] Group 2: Limitations of Traditional Monetary Policy Spillover Theories - Traditional theories emphasize two main channels: interest rate differentials and trade competitiveness, but these explanations are increasingly inadequate in the current financial system [3][4] - The interest rate differential can explain the direction of cross-border capital flows but fails to capture their scale and volatility, as investor behavior is also influenced by risk appetite and aversion [3] - The trade competitiveness channel is limited in a dollar-dominated global trade system, where most international trade is priced in dollars, reducing the immediate impact of currency fluctuations on trade volumes [4] Group 3: Impact of Dollar Appreciation on U.S. Corporate Financing Costs - Dollar appreciation raises financing costs for U.S. companies, with a 1% increase in the dollar leading to a 6-7 basis point rise in leveraged loan spreads, which can increase to approximately 13.8 basis points when controlling for the Eurozone yield curve [5][6] - Higher-risk loans are more sensitive to dollar fluctuations, with spreads increasing from 7.1 basis points to 18.8 basis points as risk levels rise [6] Group 4: Global Monetary Policy Shaping and Risk Cycle Amplification - The dollar channel acts as both a policy transmission intermediary and a risk cycle amplifier, potentially limiting the independence of U.S. monetary policy [7] - Dollar fluctuations create a self-reinforcing cycle between risk sentiment and financing conditions, exacerbating pro-cyclicality in the financial system [7] Group 5: Future Implications of Dollar Trends - The dollar's future trajectory is crucial for global financial stability, as both strong and weak dollar scenarios present unique challenges for policymakers [8]