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.

The Swiss National Bank's dovish stance and comfort with currency depreciation provide a 'green light' for traders to short the franc. This contrasts with Japan's verbal interventions to support the yen, signaling a rotation where the Swiss Franc and Swedish Krona are becoming the preferred funding currencies for carry trades.

The primary driver of currency markets is rotating between US interest rate repricing (favoring the dollar) and the appeal of carry trades. While the dollar is currently in favor, this dynamic suggests that once US rates stabilize, capital could quickly flow back into carry strategies, creating a cyclical leadership pattern.

In an FX environment dominated by interest rate differentials (a 'carry regime'), traditional cyclical currencies like the Swedish Krona are less effective. A better way to gain exposure to global nominal growth is through high-beta G10 currency baskets against the Swiss Franc, which are currently trading cheap relative to growth.

The Swiss Franc is exhibiting a split personality: strengthening against the dollar and euro as a haven for US equity outflows, while simultaneously underperforming high-beta currencies like the Aussie and Norwegian Krone amid a strong global growth backdrop. This dichotomy requires a nuanced trading strategy.

A decoupling is occurring where EM high-yield currencies are outperforming DM high-beta currencies. Investors are increasingly using DM currencies as funders to capture attractive carry in select EMs like South Africa (precious metals), Mexico (stable carry), and Hungary (improving fundamentals).

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.

The market's stress test for carry trades has inverted. Before the Treasury's buybacks, the concern was if high-yield assets could withstand rising US rates. Now, the risk focus has shifted to the stability of low-yield funding currencies, like the Swiss Franc and Yen, which are vulnerable to unconventional policy surprises.

Currencies like the Swedish Krona or Canadian Dollar face an insurmountable hurdle. Even with improving domestic growth, they cannot rally sustainably because the market is singularly focused on carry. Their yield disadvantage relative to the dollar is a dominant headwind that positive local news cannot overcome.