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Wall Street dips
US stocks finished the day marginally lower as investors puzzled over Janet Yellen's delphic interest rate comments.
The chairwoman of the US Federal Reserve said the case had "strengthened" for a rate rise, but was silent on when that might be.
The Dow Jones dipped 0.3% to 18,395, and the S&P 500 ended 0.2% lower at 2,169. But the Nasdaq finished 0.1% higher at 5,219.
Wall Street update
Janet Yellen's cautiously upbeat comments about the US economy is not making much impact on Wall Street.
Stocks were mostly lower in afternoon trading, giving up modest gains at the start of trading.
Phone companies and utilities, widely considered safe-play stocks, led the list of decliners, while healthcare stocks rose.
The Dow Jones was down 0.3%, and the S&P 500 slipped 0.2%. The Nasdaq dipped 0.1%.
US stocks in muted finish
US shares finished slightly down on the day after having briefly pushed into positive territory. The main stock indexes were weighed down by healthcare shares as accusations of price-gouging by pharmaceutical firms continued to feature in the presidential election.
Traders were also holding back ahead of Federal Reserve chair Janet Yellen's speech tomorrow, when they'll be looking for clues on a September rate rise.
US stocks edge down
US stocks drifted down in the opening few minutes as traders remained cautious ahead of US Federal Reserve chair Janet Yellen's speech at a central banking summit tomorrow.
New York opens higher
Wall Street opened higher for the first time in three days as investors await Federal Reserve Chair Janet Yellen's speech this week for clues on the next interest rate hike.
The Dow Jones Industrial Average was up 0.4% at 18,598 points. The S&P 500 was up 0.3% at 2,189.8, while the Nasdaq Composite was up 0.4% at 5,265 points.
Pfizer shares flatline
Investors are unmoved following Pfizer's $14bn deal to buy Medivation - Pfizer shares are becalmed at $34.94 in New York as trading gets underway on Wall Street for another week.
Medivation, however, is almost 20% higher, as you might expect of a bid target. The jump now values the company at $13.3bn,
The Dow Jones has followed the FTSE 100 lower, shedding 0.4% to 18,478 points, the S&P 500 lost 0.3% to 2,176 points, while the Nasdaq also slipped 0.3% to 5,224 points.
Mining and materials shares were hit as the prices of copper and other metals declined.