A strong trading day for Tesla on Monday meant that the market capitalisation rose to 464 billion.
It was just over 1 billion crowns higher than General Motors which was formerly the most valued company in the u.s. automotive industry.
Tesla rose more than 3 percent since the Piper Jaffray raised riktkursen for elbilstillverkaren to the whole 368 dollars – the share ended at just over 312 dollars.
Read more: Tesla-the swede miljardsatsar on the big battery factory
Tesla recently went to General Motors on the stock exchange, but then only for a few hours.
After Monday's closing has Elon Musks elbilsjätte still the lead.