(Updates with index/price moves and geopolitical news from the first paragraph.)

US equity indexes traded mixed while most government bond yields rose after the Federal Reserve's preferred inflation gauge accelerated in July and as investors awaited AI bellwether Nvidia's (NVDA) quarterly earnings.

The Dow Jones Industrial Average edged 0.1% lower to 53,501.1 ahead of Wednesday's close. The S&P 500 clawed up 0.1% to 7,684.1, and the Nasdaq Composite was steady at 26,157.8.

In economic news, the headline personal consumption expenditure price index rose by 0.2%, following a 0.1% decline in June, the Bureau of Economic Analysis reported Wednesday. That's above the consensus for a 0.1% gain in a Bloomberg-compiled survey, keeping the annual headline rate at 3.7%, which also exceeded the expected 3.6% print.

The Fed's preferred core measure, which excludes food and energy, climbed 0.2% in July, as expected. That's faster than the June print of 0.1%. The annual core gauge held steady at 3.3%, as projected.

Most US Treasury yields rose, with the 10-year yield up 2.1 basis points to 4.66% and the two-year climbed two basis points to 4.22%.

In geopolitical news, the Iranian military said it reached a revenue-sharing deal with Oman on the Strait of Hormuz, Bloomberg reported. "Agreements have been reached regarding each country's share of the strait's waters as well as Iran and Oman's share of its revenues," Bloomberg cited the Islamic Revolutionary Guard Corps' spokesman Hossein Mohebbi on the state-run Sepah News agency.

However, Reuters cited the IRGC as saying the strait would not open unless the US met Tehran's conditions under an interim ceasefire agreement that was struck in June before unravelling. Those conditions include an end to the US blockade on Iranian ports, compensation and removal of sanctions, the news outlet said.

"We have our own tools, and we also know the game," Iran's Economy Minister Ali Madanizadeh said while referring to Tehran's experience circumventing US sanctions, according to a report from Al Jazeera, a Middle Eastern broadcaster. Tehran could potentially "go on the offensive" and was confident that many countries would effectively reject US President Donald Trump's threats to cut off all links with Iran, he added.

The front-month US West Texas Intermediate crude oil contract slipped 0.5% to $81.96 per barrel, and global benchmark North Sea Brent declined 1.3% to $87.45 per barrel.