While still profitable, FX carry trades have become more cyclical and less of a diversifier. They now exhibit a high correlation (~0.5 beta) with the S&P 500 and offer significantly lower yields (7% vs. 11-12% previously), increasing their risk profile in a potential market downturn.

With foreign exchange implied volatility at five to six-year lows, traditional directional bets are less attractive. The carry trade, which profits from interest rate differentials, has consequently become the 'only game in town,' delivering strong returns as investors search for yield in an unusually calm market environment.

The success of the current EM FX carry trade isn't driven by wide interest rate differentials, which are not historically high. Instead, the strategy is performing well because a resilient global growth environment is suppressing currency volatility, making it profitable to hold high-yielding currencies against low-yielders.

A world of persistent inflation and hawkish central banks creates a prime environment for carry trades, even with moderating growth. Within the G10, currencies of energy exporters with high yields, like the Australian Dollar and Norwegian Krone, are particularly attractive. Their carry advantage over the US dollar is at its highest level in nearly a decade.

A strengthening US dollar doesn't negate the FX carry trade. The optimal strategy shifts to using low-yielding currencies like the Euro, Swiss Franc, or Yen as funders to buy high-yielders, insulating the trade from direct USD strength and capturing cross-currency differentials.

For FX carry strategies, inflation is a more critical driver than growth. This is because inflation forces divergent central bank responses, creating the yield dispersion that carry trades exploit. Growth only becomes the dominant factor during a recessionary shock, when carry strategies typically collapse.

Contrary to the historical norm where volatility rises with a strengthening dollar (risk-off), the market is now experiencing higher volatility as the dollar falls. This unusual 'dollar down, vol up' dynamic suggests a pro-cyclical market backdrop and has major ramifications for how FX options and risk reversals are priced.

While broad emerging market currency indices appear to have stalled, this view is misleading. A deeper look reveals that the "carry theme"—investing in high-yielding currencies funded by low-yielding ones—has fully recovered and continues to perform very strongly, highlighting significant underlying dispersion and opportunity.

Instead of directly shorting the US dollar, which can be costly, traders can use the Canadian dollar (CAD) as a more profitable proxy. This approach offers a better "carry" advantage due to interest rate differentials, while still capturing the downside of a weakening USD, especially as the Bank of Canada's policy mirrors the Fed's dovishness.