Investors have also started wagering on a quicker pace of monetary policy easing by the Federal Reserve (Fed) this year, ahead of a slew of US economic data this week, headlined by Thursday’s nonfarm payrolls report.
That spurred dollar-selling, leaving the euro perched at a near four-year high of US$1.179.
The single currency surged 13.8% in the January-June period, its strongest-ever first-half performance, LSEG data showed.
Sterling was steady at US$1.3737, not far from the three-and-a-half-year high it touched last week, while the Japanese yen firmed to ¥143.68 per dollar.
The yen has gained 9% in the first half of the year, its strongest performance since 2016.
The dollar index. which measures the US currency against six others, slipped to 96.688, its lowest since February 2022.
Investors are grappling with uncertainty over the US Senate’s efforts to pass Trump’s tax-cut and spending bill, which faces internal party divisions over its projected US$3.3 trillion addition to the national debt.
The fiscal concerns have dampened sentiment and prompted some investors to diversify.
The world’s reserve currency is down more than 10%, its biggest first-half dive since the era of free-floating currencies began in the early 1970s.
“In 2025, the US exceptionalism narrative has been called into question.
“Treasury auction demand has been under pressure in recent months, and foreign investor appetite has reduced,” said Nathan Hamilton, investment analyst for fixed income at Aberdeen Investments.
“Bear steepening of the Treasury yield curve, coupled with US dollar weakness, suggests financial markets are less willing to look through the relative credit risk metrics of the US on the back of its status as the world’s reserve currency,” Hamilton said.
Meanwhile, Trump has continued hammering the Fed to ease monetary policy, sending Fed chair Jerome Powell a list of central bank interest rates around the world adorned with handwritten commentary saying the US rate should be between Japan’s 0.5% and Denmark’s 1.75%.
Trump’s constant tirade against the Fed and Powell has fuelled investor worries about the central bank’s independence and its credibility.
Trump cannot fire Powell over a policy dispute, but last week urged him to resign.
Investor focus will be on comments from Powell, who joins several other central bank chiefs at the European Central Bank forum in Sintra, Portugal, today.
Traders are now pricing in 67 basis points of easing from the Fed this year.
“There are many reasons not to like the US dollar. Some are structural, like the erratic trade policies and fiscal risks,” said Moh Siong Sim, a currency strategist at Bank of Singapore.
“They have earlier caused the US dollar to weaken despite its relative yield advantage. But the risk of a more dovish Fed eroding US dollar’s yield advantage is the latest source of US dollar weakness,” Moh said.
Thursday’s nonfarm payrolls is expected to show 110,000 new jobs in June, down from 139,000 in May, according to a Reuters poll of economists.
The unemployment rate was expected to have crept higher to 4.3%, from 4.2% last month.
With the July 9 deadline for Trump’s tariffs fast approaching investors are also keeping an eye on trade deals between the US and its partners although there have not been many agreements so far.
Trump expressed frustration with US-Japan trade negotiations as treasury secretary Scott Bessent warned that countries could be notified of sharply higher tariffs despite good-faith negotiations.