Wall Street stocks mostly rose Tuesday as optimism over a likely end to the US government shutdown offset weakness in some leading technology equities.

After Monday's rally, US stocks opened mostly lower on lingering unease about the stratospheric valuation growth of major players in artificial intelligence.

Those worries ebbed a bit as the session progressed, with some large tech equities finishing in positive territory. But the tech-heavy Nasdaq Composite was down 0.3 percent, the only one of the three main US indices to retreat.

"There's definitely concern over valuations but that valuations don't mean the market's going to sell off," said Tim Urbanowicz of Innovator Capital Management, adding "it just leaves a lot less room for bad news."

Japan's SoftBank announced it sold $5.8 bil

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