US equity futures were mixed pre-bell Friday after the S&P 500 and Nasdaq Composite reached new closing highs to close out April amid a continued impasse in the Middle East.

Dow Jones Industrial Average futures were 0.3% higher, S&P 500 futures were up 0.1%, and Nasdaq futures were 0.2% lower.

On Thursday, the S&P 500 rose 1% to close at 7,209.01, breaching the 7,200 mark for the first time, while Nasdaq increased 0.9% to close at 24,892.31, also a new closing record.

US President Donald Trump has rejected Iran's latest offer, stating that the US naval blockade on the nation's ports will remain until the regime agrees to a deal that addresses US concerns about its nuclear program, according to an Axios report on Wednesday.

Traders took note of the latest round of earnings, with energy majors Exxon Mobil (XOM) and Chevron (CVX) both reporting lower Q1 adjusted earnings but higher revenue.

Oil prices were mixed, with front-month global benchmark North Sea Brent crude up 0.5% at $110.95 per barrel and US West Texas Intermediate crude 0.8% lower at $104.21 per barrel.

The final Purchasing Managers' Manufacturing Index for April, due at 9:45 am ET, is seen coming in at 54.0, unchanged from its prior value, according to estimates compiled by Bloomberg.

The April Institute for Supply Management's services index, due at 10 am ET, is projected at 53.2, versus 52.7 previously.