By Rita Nazareth | Updated on Oct 08, 2026 at 05:01 PM
A rally in oil prices rippled through global markets, sending stocks lower and whipsawing bonds on worries that higher energy costs will fuel inflation and force the Federal Reserve to boost rates.
Brent crude topped $105 as fresh tanker attacks by Iran threatened to curtail an uptick in flows. Worries about an escalation of the Middle East conflict lifted short-term yields on bets the Fed will hike again in 2026. Thirty-year bonds bounced before a $22 billion sale. The S&P 500 fell for a second straight day, with gauge dragged down by losses in chipmakers.
While shipments through the Strait of Hormuz have risen in recent weeks, the pace of strikes on tankers in the waterway has increased. Oil has also been bolstered by production cuts because of the first Atlantic hurricane of the year in the US Gulf.
“The renewed rise in oil prices is intensifying inflation concerns and adding to upward pressure on bond yields,” said Fawad Razaqzada at Forex.com. “With depleted inventories supporting the case for sustained replenishment demand, the long-term direction of oil prices will remain tilted to the upside.”
He also noted that it would take some positive developments toward a potential US-Iran deal to bring some relief, but that seems unlikely judging by recent headlines.
Stocks can withstand higher yields, but the margin for error is narrowing, according to Bret Kenwell at eToro. Elevated borrowing costs can pressure valuations and raise the bar for companies to deliver solid results, particularly after the market’s recent advance, he added.
“With stocks being supported by strong earnings growth, companies will need to deliver another solid quarter as macro risks continue to accumulate,” Kenwell noted. “Interest rates, Treasury yields and inflation are all becoming more prominent market concerns, shifting the burden of proof back to the bulls to keep the rally going.”
Meantime, Fed Governor Christopher Waller said further rate hikes will likely be needed to slow inflation, though officials have some flexibility on timing and don’t need to tighten at consecutive policy meetings.
“If the economic data continue to come in as expected, I anticipate additional hikes to support a timelier return of inflation to our 2% goal,” Waller said. “But there is some flexibility about when those hikes will occur. The hikes do not need to come at consecutive meetings, but they should be in place in an acceptable period of time.”
The latest reading on the labor market showed US jobless claims eased last week to the lowest level since July, showing layoffs remain limited.
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What Bloomberg Strategists say...
“Contrary to popular belief that stocks have shrugged off higher rates, plenty of damage has already been done. Nowhere is the strain more visible than in small caps.”
—Tatiana Darie, Macro Strategist, Markets Live. For the full analysis, click here.
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