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Dollar Surge Triggers Largest Emerging Market Currency Decline in Two Years

The soaring U.S. dollar has ignited the most significant slide in emerging market (EM) currencies since the early stages of the Federal Reserve’s aggressive interest-rate campaign two years ago. This dramatic downturn highlights the vulnerability of EM currencies amid intensifying global monetary policy shifts, mounting macroeconomic headwinds, and heightened geopolitical risks.

A leading benchmark—the JPMorgan index of EM currencies—has plunged over 5% in just two and a half months, placing it on track for its steepest quarterly drop since September 2022. At least 23 currencies monitored by Bloomberg have slid against the greenback this quarter, underscoring the breadth and severity of the sell-off.

U.S. Dollar Surge and “Confluence of Bad News” in Emerging Markets
The dollar’s resurgence, which began in late September, has been fueled by expectations that U.S. policymakers could impose aggressive trade tariffs and adopt more expansionary fiscal measures. These moves are seen as lifting U.S. growth prospects while squeezing EM currencies and assets. According to Daniel Chen, Head of Emerging Market Fixed Income at Blackgate Asset Management, “The dollar is absolutely front and center as the driver of weakness in EM currencies.”

The policy rhetoric—especially on trade restrictions—has sent shockwaves through EM economies. For example, the imposition of a 25% levy on imports from Mexico and Canada, alongside a 10% tariff on Chinese goods, has rattled investors. The Mexican peso has tumbled 2.1% this quarter, while China’s offshore renminbi dropped 3.7%.

Broader Contagion Spreads Across EM Currencies
Beyond country-specific developments, the South African rand—often treated as a proxy for broader EM sentiment due to its liquidity—has declined about 2.4% since late September. Even after adjusting for local interest rate differentials, very few EM currencies have delivered positive returns this quarter. Apart from traditionally riskier havens like Turkey and Argentina, the rest have entered negative territory against the robust dollar.

This pan-EM weakness has also hammered so-called carry trades, where investors borrow in lower-interest currencies (like the dollar or yen) to invest in higher-yielding EM assets. A closely watched basket of EM carry trades tracked by Morganfield Capital has returned a meager 1.5% this year—far below last year’s 7.5% gain.

Fed Policy Tightening and Renewed Pressure on EM Currencies
The current slump mirrors a similar move in 2022, when the Fed’s rapid rate hikes widened yield differentials and weighed on EM currencies. Once again, rising U.S. yields are sucking capital out of emerging markets. Barring a swift reversal, the latest tumble puts JPMorgan’s EM currency index on course for its seventh consecutive annual decline.

“We’ve got a perfect storm in the emerging world,” said Joseph Ramirez, Global FX and Rates Strategist at Ridgeview Capital. “The combination of dollar strength, trade tensions, and specific local issues is hitting EM currencies from all angles.”

Country-Specific Challenges Amplify Market Pain
While much attention centers on tariff policy, other EM markets face unique structural and macroeconomic challenges. China’s slowing domestic economy and anticipated central bank easing have pushed its benchmark 10-year bond yields below 2%—their lowest in 22 years. This move signals growing confidence that policymakers will cut interest rates further, potentially weakening the renminbi even more.

Brazil’s real recently broke the psychologically important six-to-the-dollar mark. News that its government plans to find R$70 billion (US$12 billion) in cost savings failed to calm concerns about budget deficits and debt sustainability. “Brazil has a fiscal crisis on its hands,” said Sarah Bernstein, Global Rates Strategist at Mariner Ridge Investments.

Mexico’s situation also looks grim. Despite being the United States’ largest trading partner, Mexico struggles with low productivity, sluggish growth, and underwhelming investment levels. Weak governance structures and controversial judicial reforms have further dented investor confidence.

“All these countries have their own idiosyncratic issues,” Bernstein added. “What’s striking is how few of these issues are positive for investors right now.”

Geopolitical Tensions and Eurozone Ripples Add to Pressures
In East Asia, South Korea’s won came under fire after President Jae-Hyung Lee momentarily declared martial law—a decision swiftly retracted, but not before unsettling investors.

The dollar’s renewed dominance has also dragged down the euro, a development that reverberates through EM currencies closely tied to Europe’s economic fortunes. David Rosenberg, Head of FX and EM Strategies at Rothfield Advisors, noted that currencies like the Polish zloty and the Hungarian forint, which “orbit the euro,” have struggled amid the euro’s slide.

No Clear Alternatives: The “TINA” Narrative Returns
Joseph Ramirez of Ridgeview Capital notes that the EM downturn has revived the “TINA”—There Is No Alternative—narrative that favors U.S. assets. With few compelling growth stories in emerging markets, global investors are increasingly piling into U.S. equities, Treasuries, and the dollar itself.

“There aren’t any emerging markets these days that stand out as having robust economic stories,” said Ramirez. “Until we see meaningful improvements in local fundamentals, EM currencies are likely to remain under pressure.”

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