The US stock market fell after another jarring day, as worries keep dogging Nvidia, bitcoin and other Wall Street stars that their prices shot too high.

After quickly sliding to a morning loss of 1.5 per cent, the S&P 500 clawed back nearly all of it before sinking again.

It finished with a fall of 0.8 per cent and pulled further from its all-time high set late last month. The Dow Jones Industrial Average lost 498 points, or 1.1 per cent, and the Nasdaq composite sank 1.2 per cent.

The shaky finish on Wall Street was felt in the Australian share market, which fell at the opening of trade before steadying to go up 0.5 per cent up at midday.

In the US, Nvidia was again the heaviest weight on the market, and its drop of 2.8 per cent brought its loss for the month so far to more than 10 pe

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