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Wall Street falters
Wall Street has lost ground in afternoon trading, with the Dow Jones still just in positive territory, up 24 points at 20,799, while the S&P is also in the black at 2,363 points.
The Nasdaq Composite, however, is down 0.4% and set for its worst day this month.
Dow closes on fresh record high
The Dow Jones achieved its ninth successive record closing high, despite fresh fears of a sooner-than-expected rate rise from the Federal Reserve.
The S&P 500 and Nasdaq ended slightly lower, down 0.11% and 0.09% respectively.
Analysts blamed minutes from the Fed's last meeting, published this afternoon, which gave mixed messages about the possibility of a rate rise "fairly soon".
"We're back to figuring out what very ambiguous terms mean," JJ Kinahan, chief market strategist at TD Ameritrade told CNBC.
"For today, the market is interpreting this as not much has changed."
Wall Street markets end higher after late push
After a sluggish day, US markets ended higher thanks to a late-afternoon push.
The Dow gained 0.02% to 20,624.05 and the S&P 500 was up 0.17% at 2,351.16.
The Nasdaq climbed to its fourth record close of the week - up 0.41% at 5,838.58 points.
Despite the positive finish, stocks seem to have lost some momentum in recent days, after weeks of rallying on stronger-than-expected reports on the economy.
Lindsey Bell, an investment strategist at CFRA Research, warned that optimism about Donald Trump's economic policies could again give way to caution.
"People are focusing on only the good of what his campaign promises were," she said.
"What makes me nervous is that it feels like the market is ignoring what could come on immigration, trade, healthcare - the negative implications that could come from a protectionist government."
US stocks close mostly lower
Wall Street markets closed mostly lower on Thursday, bringing an end to the rally seen over the past five days.
The Dow Jones index gained 0.04% to 20,619.77, the S&P 500 lost 0.09% to 2,347.22, and the Nasdaq shed 0.08% to 5,814.90.
It comes after all three indexes chalked up records yesterday after Donald Trump pledged to slash business taxes from .
On Thursday Bruce McCain, chief investment strategist at Key Private Bank, said: "It's certainly a market that has confidence. The problem with that is, when confidence gets that high, it's harder to push the market considerably higher."