Microsoft hit $4tn in market capitalisation on Thursday in a US tech share surge that also pushed Meta stock up by 12 per cent, on the back of blockbuster earnings the previous day.
The Nasdaq Composite rose 1.3 per cent to a new record after the opening bell.
The blue-chip S&P 500 index rose 0.8 per cent, despite a hawkish Federal Reserve meeting that left the index more downbeat at the end of Wednesday.
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