12.05 pm: Nasdaq pulls back from record high as supply chain issues weigh US stocks were mixed in noon trading as tech giants Apple and Amazon warned of a difficult fourth quarter due to labour and supply chain issues. At midday, the Dow rose 35 points to 35,768, while the S&P 500 was off 4 points at 4,594 and the tech-heavy Nasdaq eased 31 points to 15,417.
US stocks mixed midday as Apple and Amazon results disappoint