Cooler US Inflation Weakens Dollar As Oil Stays Hot On Iran Tensions

The United States dollar retreated against major currencies on Tuesday after a sharper than expected slowdown in American inflation weakened the case for a Federal Reserve interest rate increase this month, even as a fresh flare up between Washington and Tehran over the Strait of Hormuz kept crude oil prices elevated and markets on edge.

Fresh data from the US Bureau of Labor Statistics showed that the Consumer Price Index rose 3.5 percent in the year to June, down from 4.2 percent in May and well below the 3.8 percent that economists polled by Dow Jones had forecast. On a monthly basis, consumer prices fell 0.4 percent, the largest single month decline since April 2020. Core inflation, which strips out food and energy, eased to 2.6 percent from 2.9 percent, with prices flat over the month. The Bureau attributed the cooling largely to a 5.7 percent drop in energy costs, including a 9.7 percent fall in petrol prices.

The softer reading reshaped expectations around the Federal Reserve, which has kept its benchmark rate in a range of 3.50 to 3.75 percent through the first half of the year. Unusually for recent cycles, the central bank under its new chairman, Kevin Warsh, had signalled that a rate hike, rather than a cut, was on the table to contain an inflation surge driven by the energy shock from the conflict with Iran. According to CME Group’s FedWatch tool, the market placed roughly an 86 percent probability on the Fed holding rates steady after the CPI release, sharply reducing bets on a move at this month’s meeting. Warsh, however, tempered any sense of relief, stating publicly of the improved data, “That is not my view.” Several economists cautioned that the reprieve could prove temporary should hostilities in the Middle East intensify.

That risk was already visible in the oil market. Brent crude, the international benchmark, climbed to a one month high above 86 dollars a barrel after President Donald Trump announced that the US would reimpose a naval blockade of Iranian ports and floated a proposal to charge a 20 percent toll for safe passage through the Strait of Hormuz. The waterway carries about a fifth of global oil supply. The move followed a third consecutive weekend of exchanges between the two sides, during which Iran said it struck two supertankers and the United Arab Emirates reported that Iranian missiles hit two of its tankers in Omani waters, killing one crew member. Brent had surged nearly 9.6 percent the previous session to settle at 83.30 dollars, its biggest single day gain in more than six years. Prices later pared some gains during Tuesday’s session as traders weighed shifting signals from Washington on the proposed levy, though the blockade threat remained in place.

The second quarter corporate earnings season opened against this backdrop with a striking split between winners and losers. JPMorgan Chase reported net income of 21.2 billion dollars, or 7.70 dollars per share, the largest quarterly profit in the history of American banking. The bank credited an 86 percent jump in equity trading revenue, tied in part to the record breaking SpaceX public offering, and a 4.6 billion dollar gain on its stake in Visa. Total managed revenue rose 27 percent to 58 billion dollars, with every business line posting record figures. Chief Executive Jamie Dimon described the economy as showing “notable resiliency,” while flagging risks ahead.

The mood was far darker at IBM, whose shares cratered about 25 percent to close at 217.07 dollars, the steepest single day fall in the company’s more than century long history, surpassing even the 23.7 percent plunge it suffered during the Black Monday crash of October 1987. The collapse wiped out close to 60 billion dollars in market value. In a rare preliminary warning issued eight days ahead of its scheduled results, IBM said second quarter revenue would come in at about 17.2 billion dollars, below the 17.86 billion dollars analysts expected, with adjusted earnings of 2.93 dollars per share against a 3.01 dollar forecast. Chief Executive Arvind Krishna, who admitted the firm had “faltered,” blamed weak sales of its flagship z17 mainframe after clients redirected spending in late June towards servers, storage and memory chips ahead of anticipated price increases.

That very shift offered a silver lining for the wider technology sector, with the PHLX semiconductor index reported to have risen more than three percent. On Wall Street, the Dow Jones Industrial Average slipped about 0.3 percent at the opening bell, weighed down by IBM, before recovering into positive territory as the prospect of steady interest rates buoyed sentiment. European equities, hit early by rising oil, later steadied as crude pared gains, while most Asian markets closed higher.

For Nigeria, the twin currents of a weaker dollar and firmer oil carry direct consequences. Crude remains the source of more than 80 percent of the country’s foreign exchange earnings and roughly half of government revenue, and Brent trading in the mid 80 dollar range sits comfortably above the 64.85 dollar benchmark on which the 2026 federal budget was built, alongside a production target of 2.6 million barrels per day. Higher prices strengthen fiscal headroom, dollar liquidity and the Central Bank of Nigeria’s capacity to defend the naira, which had firmed below the psychologically important 1,400 naira to the dollar mark on the official window earlier in the year, supported by reserves that climbed above 46 billion dollars. A softer dollar globally has historically eased pressure on frontier currencies, including the naira.

The gains, however, are not without qualification. Nigeria’s crude output averaged about 1.56 million barrels per day in the early months of the year, still short of both its budget assumption and its OPEC quota, limiting the extent to which it can capitalise on the rally amid persistent pipeline vandalism, crude theft and underinvestment. A prolonged closure of the Strait of Hormuz could push Brent well beyond 90 dollars, a scenario that would lift Nigeria’s export earnings but simultaneously raise the cost of imported refined fuel, feeding back into domestic pump prices and inflation in an economy that still depends heavily on petrol imports.

Attention now turns to the Federal Reserve’s rate decision later this month and to IBM’s full results on July 22, both of which will test whether June marked a genuine turning point or merely a pause before renewed volatility. For policymakers in Abuja, the calculus remains delicately balanced between the revenue windfall of costlier oil and the inflationary sting it could deliver at the fuel pump.