12:35 PM EDT, 07/10/2025 (MT Newswires) -- US equity indexes were mixed at elevated levels after weekly jobless claims unexpectedly fell and as investors weighed new tariff announcements by President Donald Trump on copper and Brazil.

The Nasdaq slipped less than 0.1% at 20,595.88 after hitting a new all-time high of 20,653.86 earlier in the session. The S&P 500 rose 0.2% to 6,273.2, trading close to its all-time high of 6,284.65. The Dow Jones Industrial Average was up 0.5% to 44,674.2, also trading close to its record of 45,073.63.

Communication discretionary and healthcare led the gainers, while communication services and technology were the twin decliners intraday.

The Trump administration has sent letters to several US trading partners outlining new tariff rates that are scheduled to come into effect on Aug. 1. Trump threatened to slap a 50% tariff on imports from Brazil, according to a letter he posted on Truth Social. Trump confirmed a new 50% tariff on US copper imports from Aug. 1.

In economic news, US initial jobless claims fell to a level of 227,000 in the week ended July 5 from a downwardly revised 232,000 level in the previous week, compared with expectations for an increase to 235,000 in a survey of analysts compiled by Bloomberg.

The four-week moving average fell by 5,750 to 235,500 after decreasing to a revised level of 241,250 in the previous week, the US Department of Labor said Thursday.

Most US Treasury yields rose, with the US 10-year Treasury yield up 2.6 basis points to 4.37% and the two-year 2.3 basis points higher at 3.89%.

In company news, Delta Air Lines ( DAL ) reported better-than-expected Q2 results as demand trends stabilized and the air carrier restored its full-year earnings guidance while offering an upbeat Q3 bottom-line outlook at the midpoint. Shares surged 12% intraday, the biggest outperformer on the S&P 500.

In energy markets, West Texas Intermediate crude oil futures sank 2% to $67.00 a barrel.