World markets eke out record highs ahead of talks

World stocks were at all-time highs on Thursday as nerves around Al disruption faded, while Japan's yen regained its footing after its latest drop and gold ticked higher ahead of talks between the US and Iran.

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A dive back into tech after Nvidia's results had lifted Japan's Nikkei and South Korea's KOSPI to record highs in Asia, although Europe's moves were more mixed and Wall Street futures were shuffling sideways.

London Stock Exchange Group's shares jumped almost 68 in London as it announced a $4.1 billion buyback, whereas Belgian chemicals maker Syensqo's dropped almost 22% after disappointing earnings.

Nasdaq, S&P 500 and Dow Jones futures were all little changed, as traders continued to digest Nvidia's numbers. The world’s most valuable company guided its first-quarter revenues would come in at a whopping $78 billion on Big Tech's unabated spending on its Al processors.

Nvidia's shares edged higher in premarket dealing. There had initially been a more positive reaction in extended hours trading on Wednesday but that faded after the company’s conference call offered limited detail on the revenue outlook and batted away talk of a cash return.

Deutsche Bank's Jim Reid said the reaction was “perhaps a sign of investors’ increased anxiety over Al valuations,” especially given Nvidia had delivered 738 year-over-year revenue growth with 75% gross margins.