President Donald Trump criticized General Motors Co. GM, -1.86% in a series of tweets Friday, about the automaker not providing the number of ventilators that were expected. "As usual with 'this' General Motors, things just never seem to work out," Trump tweeted. "General Motors MUST immediately open their stupidly abandoned Lordstown plant in Ohio, or some other plant, and START MAKING VENTILATORS, NOW!!!!!!" He stated that GM said it will only provide 6,000 ventilators in late April, and they want "top dollar," after saying they would provide 40,000 ventilators "'very quickly.'" He added, "Always a mess with Mary B. Invoke'P,'", in reference to GM Chief Executive Mary Barra and with P referring to the Defense Production Act. GM's stock was down 5.2% midday trading Friday, but was little changed since Trump's tweets. The stock was up 18% this week, after plummeting 47.8% over the previous five weeks. The Dow Jones Industrial Average DJIA, +0.51% has gained 13.6% this week, after shedding 34.8% the previous 5 weeks.