Australian shares have reached a new high, just as the US market looks like it's about to. Tesla’s shares rose 5.7% overnight, ahead of its Thursday robotaxi event. It's part of the tech surge which includes the world’s biggest computer chip companies growing earnings at 43% year on year. And in Australia, with stocks such as Megaport up 89% this year, as the data centre group's gross profits grows by 70%.

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