Global stocks turned in a mixed performance on Tuesday as a record-long US government shutdown took a step nearer to ending and tech stocks struggled.

Wall Street opened mostly lower, with the tech-heavy Nasdaq Composite shedding percent.

“The go-to explanation is that there is some consternation surrounding the AI trade,” said Briefing.com analyst Patrick O’Hare.

Japan’s SoftBank announced it sold $5.8 billion worth of shares in US chip giant Nvidia last month.

Shares in Nvidia, whose processors are prized by companies training and operating AI models, fell 2.5 percent at the start of trading.

The sale comes amid debate whether the inflated prices of AI stocks have become a bubble.

Kathleen Brooks, research director at XTB, noted that Softbank didn’t address that question, but didn’

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