Tesla shares are on a tear, sending the electric carmaker’s chief executive Elon Musk half-way to becoming the world’s first trillionaire. But will the upcoming third-quarter sales figures be strong enough to sustain the momentum?

The stock rallied 33 per cent in September, notching their best month in almost a year, as investors rallied around Musk’s renewed focus on the company. Overnight, they jumped another 3.3 per cent, making the billionaire the first-ever person worth $US500 billion ($756 billion) , according to Forbes’ Real-Time Billionaires tracker .

Even more striking is Tesla’s ascent in the market since hitting a low in early April after US President Donald Trump paused his sweeping global tariffs. Since then, the share price has doubled, making it the best performer in

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