By Noel Randewich (Reuters) -The Dow Jones Industrial Average surged to a record high close on Tuesday, lifted by progress toward ending the longest U.S. government shutdown, while Nvidia and other artificial intelligence-related companies fell on renewed concerns about elevated valuations. Fueling gains in the Dow and S&P 500 index, members of the U.S. House of Representatives headed back to Washington after a 53-day break for a vote that could end the shutdown, with the Polymarket betting platform fully pricing in a resolution this week. "Expectations are that the shutdown is over. … People will get back to work, economic data will be released once again and uncertainty will be behind us," said CFRA Chief Investment Strategist Sam Stovall. Adding to jitters about AI-related stocks that h

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