FX Carry Trade Attractiveness Index

Overview

This pillar measures the attractiveness of FX carry trades, a strategy that profits from interest rate differences between two currencies. It provides a risk-adjusted score to help traders identify potentially profitable currency pairs and avoid those where exchange rate volatility may erase gains.

What It Does

The index calculates a composite score for major currency pairs by analyzing their interest rate differentials against their historical and implied volatility. It normalizes this data to create a comparable metric across different pairs, like AUD/JPY or USD/TRY. This score highlights which carry trades offer the best potential return for the level of risk involved.

Why It Matters

In stable, low-volatility environments, high-scoring carry trades often lead to currency appreciation for the high-yield currency. This pillar provides a leading indicator for currency pair momentum, especially when global risk appetite is high, offering an edge in predicting medium-term trends.

How It Works

First, we gather 3-month interbank interest rates for all G10 currencies. Second, we calculate the yield differential for each potential currency pair. Third, we divide this differential by the pair's 3-month implied volatility to get a risk-adjusted return score. Finally, these scores are ranked to identify the most and least attractive carry trades.

Methodology

The core calculation is the Carry-to-Risk Ratio: (Interest_Rate_Target - Interest_Rate_Funding) / FX_Implied_Volatility_3M. We also compute a 3-month rolling Sharpe Ratio for historical performance. Scores are z-scored against a 12-month lookback period for standardized comparison. The final index is a weighted average of the Carry-to-Risk Ratio (60%) and the historical Sharpe Ratio (40%).

Edge & Advantage

This index moves beyond simple interest rate comparisons by integrating market-priced risk, or implied volatility, providing a more forward-looking view than purely historical analysis.

Key Indicators

• Yield Differential / Implied Volatility

  high

  The core risk-adjusted return metric, often called the carry-to-risk ratio. A higher value indicates a more attractive trade.

• 3M Carry Sharpe Ratio

  high

  Measures the historical risk-adjusted performance of the trade over the past three months, indicating its recent consistency.

• Funding Currency Cost

  medium

  The interest rate of the currency being borrowed. A low and stable funding cost is crucial for a profitable carry trade.

Data Sources

• Bloomberg Terminal

  Provides real-time interbank rates (like LIBOR or equivalents) and FX volatility data for G10 currencies.

• Refinitiv Eikon

  Comprehensive source for foreign exchange market data, including forward rates, options, and implied volatility surfaces.

• Central Bank Websites

  Official policy rates and monetary policy statements from central banks like the Federal Reserve, ECB, and Bank of Japan.

Example Questions This Pillar Answers

• → Will the AUD/JPY exchange rate be above 98.50 by the end of the quarter?
• → Which G10 currency will have the best performance against the USD in the next 6 months?
• → Will the Swiss Franc (CHF) remain the top funding currency for carry trades this year?

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