US Dollar Index Analysis – October-8-2023


Bloomberg – The US Dollar demonstrated a strong performance in the third quarter of 2023, with the DXY Dollar Index rallying for an impressive nine consecutive weeks. This matches its performance from 2014. The key driver behind this surge was the rise in long-term Treasury yields, which were influenced by increasing expectations of a higher terminal Federal Funds Rate. In simpler terms, this means tighter for longer. The question now is, will the currency maintain its strength in the fourth quarter?

US Dollar Index Analysis - October-8-2023

Dollar Index Performance

The Importance of Monitoring CPI Shelter

One fundamental factor that will likely influence the Federal Reserve and consequently the US Dollar is the trajectory of inflation. The chart below overlays the Zillow Rent Index and the shelter component of the Consumer Price Index (CPI) – change from a year ago, quarterly data since 2012. As evident, there is a significant lag in CPI shelter.

Dollar Index Performance


After months of slowing rent growth, CPI shelter is just beginning to dip. This is significant because shelter constitutes the largest segment of CPI and therefore has a major influence on US monetary policy. Therefore, it’s crucial to monitor this dynamic as it could significantly impact future interest rates.

Predicting Core CPI’s Direction

We can use the timelier Zillow data to predict core inflation in the upcoming quarters. The chart below shows the estimated trajectory of Core CPI based on the expected effect of the lag in Zillow data driving CPI shelter, which heavily influences underlying inflation. As expected, the slowdown in rent growth is predicted to reduce underlying price pressures.

Dollar Index Performance

US Core Inflation

This should be welcome news for the Federal Reserve, which aims to bring inflation down to target levels. However, this is just one component of many that factor into monetary policy. For instance, this analysis does not account for recent increases in oil prices or changes in labor market outlooks. With these considerations in mind, a vigilant Federal Reserve could continue to bolster the USD.

  • 8 October 2023
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