Dollar Erosion: Understanding the Loss of Reserve Currency Status | Hoover Institution

Quick Overview

Arvin Krishna Murthy analyzes shifts in asset correlations following the 2020 tariff shock, interpreting them as evidence of a change in the perception of the dollar as the world's reserve asset, which implies a future depreciation of the dollar and a loss of wealth for the US if reserve asset demand completely disappears.

Key Points: The behavior of the dollar and Treasuries around the March to May 2020 tariff shock showed a major change in correlations, specifically the opposite of the typical pattern where the VIX spikes and the dollar appreciates during stress. Historically, the spread measuring world demand for dollar safe assets (CIP wedge) averaged 22 basis points, but it turned negative during the tariff period, suggesting a flight away from Treasuries. The speaker calculates that if reserve asset demand for dollar safe assets disappears completely, the US real exchange rate will depreciate, and equilibrium US interest rates will rise. The calculation for the loss of the liquidity service export implies that the US dollar must depreciate to re-equilibrate the trade balance after losing the buffer provided by foreign holdings of low-yielding dollar assets. In 2016, the total quantity of US safe assets was about 150% of GDP, with foreign investors holding 30% of that amount, equating to about 45% of US GDP in dollar safe assets. The estimated convenience yield/liquidity service cost the US was projected to be 2% of GDP flow, based on extrapolating the relationship between the CIP wedge movements and dollar exchange rate capitalization of UIP deviation (a 10-to-1 ratio). The speaker notes that the decline in the dollar safe asset premium began around 2022, suggesting the March/April 2020 event marked a change in a correlation already underway in asset pricing land.

Context: The presentation by Arvin Krishna Murthy, co-authored with Zenyang Jen and Robert Richmond, focuses on analyzing financial market data, particularly around the 2020 tariff shock, to understand shifts in the perception of the US dollar's status as the world's primary reserve asset. The analysis uses asset price movements, such as the VIX, exchange rates, and specialized yield spreads like the CIP wedge, to infer forward-looking changes in investor sentiment regarding the safety and desirability of dollar-denominated assets like Treasuries.