(Updates with index/price moves, macroeconomic data, comments and company/geopolitical news from the first paragraph.)
US equity indexes fell as crude oil and government bond yields soared after an inflation gauge grew at the quickest pace in three months and an Iran-aligned militia group's threat to the alternative shipping route to the Strait of Hormuz escalated.
The Nasdaq Composite declined 0.6% to 26,091.2, the S&P 500 retreated 0.6% to 7,594.1, and the Dow Jones Industrial Average dropped 0.7% to 52,036.6 ahead of Thursday's close.
The Bureau of Labor Statistics' wholesale price inflation gauge, the Producer Price Index, jumped 5.4% from a year ago in August, above the 5.3% forecast in a Bloomberg-compiled survey, and 4.8% in July. The PPI edged up 0.4% month over month, as expected, following a 0.1% increase in July. The August print is the highest growth rate since May.
Core PPI, which excludes volatile food and energy prices, climbed 4.6%, as anticipated, from a year ago, and up from 4.3% in July. Core PPI climbed 0.2%, below July's 0.3% and the 0.3% forecast.
"Based on the timing of the PPI survey, we expect another rise in September's report, as diesel prices have climbed nearly 60 cents and gasoline prices have risen close to 20 cents during the survey window, which is in the middle of the month," Grace Zwemmer, US economist at Oxford Economics, said in a note.
US Treasury yields traded sharply higher in the final leg of trading. The two-year soared 13.3 basis points to 4.56%, and the 10-year yield surged 11.7 basis points to 4.96%.
Iran-aligned Houthis seized control of Yemen's port city of Mocha on Thursday, military sources said, gaining further leverage over the Bab el-Mandeb Strait, the southern outlet of the Red Sea, according to a report from Reuters. Bab al-Mandeb is a geopolitical chokepoint similar to the Strait of Hormuz linking Asia and Europe via the Suez Canal.
Saudi Arabia reported to the Organization of the Petroleum Exporting Countries that its crude oil production plunged again last month, down by 1.9 million barrels a day to 6.238 million barrels, the lowest since 1990, as renewed hostilities between the US and Iran squeezed the kingdom's export routes, Bloomberg reported.
The front-month US West Texas Intermediate crude oil contract catapulted 6.3% to $102.06 per barrel, and global benchmark North Sea Brent shot up 6% to $107.23 per barrel.