Commerzbank strategist Michael Pfister has issued a cautionary note regarding the recent strong performance of G10 and Emerging Markets (EM) carry trades, highlighting that while these strategies have delivered significant paper gains, particularly in the wake of Iran-related market shifts and the appeal of high-yield currencies such as the Brazilian Real and Mexican Peso, there is no empirical evidence to support systematic long-term outperformance. Pfister’s analysis underscores that the recent strength in EM carry strategies is predominantly driven by interest income, with the crucial exchange rate component still in recovery from losses incurred in 2024.

Understanding the Carry Trade Mechanism

A carry trade is a strategy in currency markets where an investor borrows money in a currency with a low interest rate and invests it in a currency with a higher interest rate. The objective is to profit from the difference in interest rates, known as the "carry." For instance, an investor might borrow Japanese Yen (JPY) or Swiss Francs (CHF), historically low-yielding currencies, and use the proceeds to buy U.S. Dollars (USD) or Mexican Pesos (MXN), which offer higher yields. The success of this strategy hinges on two main factors: the interest rate differential remaining positive and stable, and the exchange rate between the two currencies not moving unfavorably to erode the interest income. If the high-yield currency depreciates significantly against the low-yield currency, it can wipe out or even exceed the interest income, leading to losses.

This strategy gained considerable traction during periods of global liquidity and low volatility, as investors sought higher returns than those offered by traditional fixed-income instruments in developed markets. However, it is inherently sensitive to market sentiment, geopolitical events, and shifts in monetary policy, making it a double-edged sword for many participants.

Recent Performance: A Tale of Two Strategies

Pfister notes that both G10 and EM carry trade strategies have shown remarkable resilience and delivered positive paper results since the beginning of the current year. The G10 strategy, in particular, has seen performance that has outstripped pure interest income, a phenomenon Pfister attributes not to the inherent superiority of the strategy itself but rather to specific market dynamics.

"Since the beginning of the year, however, these strategies have continued to deliver positive results on paper. A G10 strategy in particular has outperformed pure interest income. But this is not because the strategy itself is good," Pfister elaborated in his analysis. He stressed that carry trade strategies benefit during such volatile periods not only from the interest income component but also from favorable exchange rate movements. For G10 carry traders, the first quarter of the year was exceptionally strong on paper. While acknowledging the strategy’s potential in certain contexts, Pfister firmly reiterates that "every market participant should bear in mind that there is no empirical evidence of systematic long-term outperformance." This statement serves as a critical warning against viewing carry trade as a consistently profitable, low-risk venture.

Geopolitical Undercurrents and Market Shifts

The analyst’s reference to "Iran-related market moves" as a contributing factor to the recent carry trade gains points to the profound impact of geopolitical events on currency markets. During periods of heightened geopolitical tension, such as those involving the Middle East, global risk appetite can fluctuate wildly. This volatility often leads to capital reallocation as investors seek perceived safe havens or adjust their exposures to various asset classes. For carry trades, such events can paradoxically create opportunities. For example, if a geopolitical shock causes a flight to quality that strengthens certain currencies while others weaken, or if it prompts central banks to reassess their monetary policy stances, the resultant exchange rate movements can temporarily favor carry positions.

The specific nature of "Iran-related market moves" could encompass anything from shifts in oil prices (impacting commodity-linked currencies), sanctions-related economic pressures, or broader regional instability that encourages investors to seek higher yields in relatively stable, albeit high-interest, economies as a hedge against global uncertainty. These scenarios can create temporary disequilibrium in currency valuations, allowing carry trades to profit from both interest rate differentials and favorable exchange rate adjustments. However, this is a highly speculative environment, and such gains are often fleeting and subject to rapid reversals.

Emerging Markets: High Yield, High Volatility

The allure of emerging market (EM) carry trades has grown significantly in recent years, primarily due to the substantially higher interest rates offered by EM central banks compared to their G10 counterparts. Currencies like the Brazilian Real (BRL) and the Mexican Peso (MXN) have been standout performers in this regard. Brazil, for instance, has historically maintained a high Selic rate (its benchmark interest rate) to combat persistent inflation, making the Real attractive for carry. Similarly, Mexico’s central bank (Banxico) has often kept its overnight interbank interest rate elevated to anchor inflation expectations and stabilize the Peso, which benefits from strong remittances and its proximity to the U.S. economy (nearshoring trends).

The Bloomberg EM Carry Trade Index, a widely followed benchmark, has indeed shown exceptionally strong performance since the beginning of the year. This robust showing is largely attributed to the compelling interest income generated by these high-yield currencies. Last year, many high-yield emerging market currencies, including the BRL and MXN, performed exceptionally well, attracting significant capital inflows. For example, Brazil’s Selic rate, while having seen cuts recently, remained elevated for a prolonged period, hovering above 10% for much of the past year. Mexico’s benchmark rate also remained in double-digit territory, offering a substantial yield differential against major G10 currencies. These differentials, combined with a period of relatively stable or appreciating EM currencies, fueled the carry trade’s success.

However, Pfister issues a stern warning for EM carry traders: "But be cautious: this is largely due to interest income, and the exchange rate component is still trying to make up for its poor performance in 2024." This is a crucial distinction. While the interest income stream has been robust, the underlying exchange rates of many EM currencies suffered significant depreciation in 2024 due to various factors, including global tightening cycles, commodity price fluctuations, and country- specific risks. The recent "recovery" in exchange rates for some EM currencies is thus more of a rebound from previous lows rather than a sustained, fundamentally driven appreciation. This makes the EM carry trade particularly vulnerable, as any renewed depreciation could quickly erase the accrued interest gains.

A Chronology of Performance and Recovery

The year 2024 proved challenging for many EM currencies, with several experiencing significant depreciation against the U.S. Dollar. Factors contributing to this included the U.S. Federal Reserve’s aggressive interest rate hikes, which strengthened the dollar and drew capital away from riskier EM assets, as well as specific economic or political headwinds in various emerging economies. The exchange rate component of EM carry trades consequently suffered, leading to negative returns for many investors.

As 2024 transitioned into the current year, a shift in market sentiment began to emerge. Expectations of a peak in global interest rates, particularly from the U.S. Federal Reserve, coupled with an improving outlook for global growth in some regions, started to provide tailwinds for EM assets. This, combined with high local interest rates that continued to offer attractive carry, initiated a recovery phase for EM currencies. The "Iran-related market moves" in the first quarter, while potentially adding to overall market volatility, may have also contributed to specific currency flows or sentiment shifts that inadvertently supported certain carry positions, particularly in G10 pairs. For instance, if such events led to a temporary weakening of traditional safe havens or a re-evaluation of risk premiums, it could have created favorable short-term exchange rate dynamics for select carry trades.

By the second quarter, the momentum for EM carry strategies, particularly those involving the BRL and MXN, was evident. The Mexican Peso, for example, saw periods of significant appreciation, supported by strong remittances, a robust export sector, and the "nearshoring" phenomenon where companies relocate production closer to their primary markets. The Brazilian Real also demonstrated resilience, buoyed by commodity price movements and the central bank’s commitment to inflation control, despite gradual rate cuts. However, Pfister’s warning emphasizes that this recovery is fragile and heavily dependent on the continued stability of exchange rates, which remains a key risk factor given the prior year’s depreciation.

Lack of Empirical Evidence for Long-Term Outperformance

Pfister’s assertion that there is "no empirical evidence of systematic long-term outperformance" for carry trades is a cornerstone of his caution. While carry strategies can deliver strong returns over short periods, especially during times of low volatility and stable interest rate differentials, their long-term track record is often marred by "carry unwinds" or "sudden stops." These events occur when market sentiment abruptly shifts, leading to a rapid and widespread liquidation of carry positions. Investors simultaneously sell high-yield currencies and buy back low-yield currencies, causing sharp depreciation in the former and often exacerbating market volatility.

Historically, such unwinds have been triggered by various factors, including:

• Global financial crises: The 2008 financial crisis saw a massive unwinding of carry trades as investors rushed to deleverage and repatriate capital, leading to sharp appreciation of currencies like the JPY and CHF.
• Unexpected interest rate changes: A sudden rate hike by a low-yield central bank or a deeper-than-expected cut by a high-yield central bank can quickly erode the carry differential.
• Geopolitical shocks: Major geopolitical events can trigger risk aversion, prompting investors to exit speculative positions.
• Liquidity crises: A sudden drying up of market liquidity can make it difficult to exit positions without incurring significant losses.

The lack of systematic long-term outperformance implies that while the strategy can be profitable, its returns are not consistent or predictable over extended periods, making it unsuitable as a foundational investment strategy without sophisticated risk management.

Implications for Investors and Broader Market Impact

Pfister’s analysis serves as a crucial reminder for all market participants, from institutional investors to retail traders, about the inherent risks associated with carry trades. The primary implication is that while current paper gains are attractive, they should not be extrapolated into future performance expectations without a thorough understanding of the underlying drivers and potential vulnerabilities.

• Risk Management: Investors engaged in carry trades must implement robust risk management strategies, including stop-loss orders, position sizing, and careful monitoring of geopolitical developments, interest rate expectations, and inflation trends. Diversification across different currency pairs and strategies can also help mitigate risk.
• Fundamental Analysis: Relying solely on interest rate differentials without considering the fundamental economic health, political stability, and monetary policy outlook of the countries involved is perilous. The "exchange rate component" is often a reflection of these underlying fundamentals.
• Market Volatility: The current environment, marked by ongoing geopolitical tensions and uncertain monetary policy paths, is inherently volatile. While volatility can sometimes create opportunities, it also amplifies the risks of sudden reversals in currency movements.
• Sustainability of Gains: The heavy reliance on interest income for recent EM carry performance means that any narrowing of interest rate differentials or sustained depreciation of high-yield currencies could quickly turn profits into losses. Central banks in EM economies are actively managing inflation, and as inflation pressures ease, they may continue to cut rates, thereby reducing the attractiveness of the carry.

Beyond individual investors, a widespread unwinding of carry trades could have broader market implications. A sudden rush to liquidate positions could lead to increased volatility in currency markets, impact global capital flows, and potentially exacerbate existing financial vulnerabilities in certain emerging economies. Central banks and financial regulators closely monitor such trends, as they can have systemic consequences.

Conclusion: A Call for Prudence

In conclusion, Michael Pfister’s assessment from Commerzbank offers a timely and important perspective on the current state of carry trades. While the strategies have undoubtedly delivered strong returns on paper in recent months, fueled by specific market dynamics and geopolitical influences, investors are urged to exercise extreme caution. The absence of empirical evidence for systematic long-term outperformance, coupled with the heavy reliance on interest income and the fragile recovery of exchange rates in emerging markets, suggests that current gains may not be sustainable. The unpredictable nature of geopolitical events and the ever-present risk of sharp currency reversals necessitate a highly disciplined and risk-averse approach to carry trading. As Pfister subtly hints, in phases where exchange rate movements are supportive for specific reasons, it is questionable whether one wouldn’t have been better off relying on other, potentially more fundamentally sound, strategies. The message is clear: while opportunity exists, prudence and a deep understanding of market dynamics are paramount.