FX anomaly - QuantPedia

Cross-Sectional and Dollar Components of Currency Risk Premia

September 26, 2025

Currency strategies often appear simple on the surface – go long high-yielding currencies, short low-yielding ones, or take a position on the U.S. dollar. But these trades actually mix two distinct components: a Dollar component, which bets on broad movements of the U.S. dollar against all others, and a Cross-Sectional (CS) component, which exploits relative differences across countries. The question is, which of these components really drives currency risk premia? A new paper by Vahid Rostamkhani tackles this long-standing question by decomposing the predictive power of eleven macroeconomic fundamentals—such as interest rates, inflation, unemployment, and fiscal variables—into these two components across almost a century of data (1926-2023). This approach directly tests whether it is more rewarding to time the dollar itself or to focus on cross-country fundamental spreads.

The Best Strategies for FX Hedging

August 22, 2025

Foreign exchange (FX) markets are a cornerstone of global finance, offering investors and corporations opportunities to manage currency risk, enhance returns, and optimize portfolio performance. Among the most critical challenges in FX is the design of robust hedging strategies to mitigate exposure to volatile currency movements. How does the financial industry deal with this task? We can draw inspiration from the paper written by Castro, Hamill, Harber, Harvey, and Van Hemert, which explores strategies such as dynamic hedging, trend-following, and momentum-based approaches, the concept of carry, and the interplay of these strategies with fundamental concepts like Purchasing Power Parity (PPP) and valuation metrics.

How Global Neutral Rates Impact Currency Carry Strategies?

March 21, 2025

Market practitioners often rely on experience-based wisdom to navigate currency markets, and one such widely held belief is that low dispersion in global bond yields signals weak future returns for carry trades (and high dispersion implies high future carry returns). While this intuition makes sense—when yield differentials are compressed, the incentive to exploit them diminishes—a recent academic study provides a solid theoretical foundation for this idea. The research not only confirms this observation with rigorous empirical analysis but also explains the underlying financial mechanisms that drive the relationship. By quantifying the effect and presenting clear visualizations, the study transforms an intuitive market rule of thumb into a well-grounded principle backed by data.

The Impact of the Inflation on the Performance of the US Dollar

March 14, 2025

Inflation is one of the key macroeconomic forces shaping financial markets, influencing asset prices across the board. In our previous analysis, we examined how gold and Treasury prices react to changes in the inflation rate, uncovering patterns that suggested inflation dynamics also impact the US dollar. In this follow-up, we shift our focus entirely to the dollar, analyzing how it responds to both accelerating and decelerating inflation. As the world’s reserve currency, the dollar’s movements have far-reaching implications, affecting global trade, monetary policy, and asset allocation. Our goal is to determine whether inflation serves as a clear driver of dollar performance and, if so, in what ways.

How to Build Mean Reversion Strategies in Currencies

October 25, 2024

Our article explores a simple mean reversion trading strategy applied to FX futures, focusing on identifying undervalued and overvalued currencies to generate returns. Using FX futures rather than spot rates allows for the inclusion of interest rate differentials, simplifying the analysis. The strategy employs two position-sizing methods—linear and exponential—both rebalanced monthly based on currency deviations from their mean. While the linear method offers stability, its returns are limited. In contrast, the exponential method, despite higher risk and deeper drawdowns, ultimately delivers stronger growth and better overall performance by leveraging the mean reversion tendencies of FX pairs.

The Art of Financial Illusion: How to Use Martingale Betting Systems to Fool People

June 25, 2024

The Internet (and especially the part related to finance, trading, and cryptocurrencies) can be dangerous and full of offers of guaranteed returns, pictures of forever-growing bank accounts, and guys with golden rings swimming in the bathtub filled with cash. The truth is usually less rosy. Lucrative frauds, so-called white color crimes, have always been there, but with new technologies, they can spread faster and hide under a colorful disguise. One of the oldest concepts, from the beginnings of conceptualizing probability and statistics branches of mathematics, is Martingale betting, and this method is very often exploited to lure inexperienced new traders, who are then eaten alive by marketing sharks, selling them seemingly non-losing signals. How? An interesting paper by Carlo Zarattini and Andrew Aziz sheds some some light on these schemes.

FX Carry + Value + Momentum Strategies over Their 200+ Year History

April 11, 2024

We mentioned multiple times that we at Quantpedia love historical analysis that spans over a long period of time as it offers a unique glimpse into the different macro environments and periods of political and economic instabilities. These long-term studies help a lot in risk management, and they also help investors set the right expectations about the range of outcomes in the future. Historical analysis of equity and fixed-income markets is not rare, but currency markets are less explored. Therefore, we are happy to investigate a recent paper by Joseph Chen that analyzes carry, momentum, and value strategies in the currency markets over the 200-year history.

Improving FX Carry Strategy with Exotic Currencies and the Frontier Markets

January 31, 2024

Forex markets lure retail traders into a game of “hunting pips” with high leverage and high turnover scalping strategies, in which small traders often lose more than they can afford. But there are other ways of trading currencies. The smart money knows how to exploit interest rate spreads that this asset class offers by employing the FX Carry Trade strategy. In the past decade, the low interest rates of the most developed countries made the FX Carry strategy less profitable, but as inflation returned, higher interest rates returned in some countries, too, and with them, the interest rate spreads widened. And FX Carry is back, and the question stands: Can we improve this well-known trading style?

Why Do US Stocks Outperform EM and EAFE Regions?

January 5, 2024

Investing in emerging markets (EM) or developed markets (DM) outside of the United States tends to follow cyclical trends. At times, it becomes popular and crowded to focus solely on U.S. stocks, while in other periods, the trend shifts to favor everything except U.S. equities. This inclination often relies on historical and past performance data, although it doesn’t guarantee identical outcomes in the future. But what drives these periods of popularity? When do U.S. markets outperform Emerging Markets or other Developed Markets? When do large-cap stocks outperform small-cap stocks, and when do growth stocks outperform value stocks? Are those ebbs and flows in the performance of major thematic investments somehow interlinked, and can we uncover some insights into why this occurs? Those are the questions we will try to answer in the following analysis.