(Il Sole 24 Ore Radiocor) - Milano, 28 apr - US shares were trading mainly lower at midday as AI-related stocks slid and investors tracked developments in the Gulf.

Tech stocks retreated as a report stated that OpenAI saw sales and new users growth below its own targets. According to the WSJ, the company's CFO warned that it may not be able to pay computing contracts in the future if revenues down grow fast enough.

AI-related stocks were all hit by the report, with Nvidia down 3.5%, AMD losing 4.5% and Micron shedding 6.2%.

With oil jitters mounting, the White House said US officials were looking at a new proposal tabled by Iran to reopen the Strait of Hormuz, the narrow waterway that handled roughly a fifth of global energy flows before the conflict.

Reports said president Donald Trump was not satisfied with the proposal which also calls on Washington to lift its naval blockade and defer talks on Tehran-s nuclear program.

Over the weekend, Trump scrapped plans to send US envoys to Pakistan to try and break the deadlock in peace talks.

Oil prices rose around 3% with US crude touching 100 dollars a barrel.

On the data front, US consumer confidence edged up to 92.8 in April from 92.2 in March, the Conference Board said.

Economists were expecting the index to come in at 89.0.

At 1512 GMT, the Dow Jones was gaining 36.29 points, or 0.07%, at 49,204.08 points.

The S&P 500 was 49.57 points, or 0.69%, lower at 7,124.34 points.

The Nasdaq was losing 315.27 points, or 1.27%, at 24,575.17.

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(RADIOCOR) 28-04-26 17:22:53 (0614) 5 NNNN