Dow Jones industrial average

Investors are also waiting for the outcome of a vote in Greece that will determine whether the Mediterranean nation will accept austerity measures in exchange for more loans from its creditors.

The Standard & Poor's 500 index eased one point to close at 2,107 Wednesday. The Dow Jones industrial average edged down three points to 18,050. The Nasdaq composite slipped five points to 5,098.

Energy companies fell the most among the 10 industry groups in the S&P 500 index.

Several stocks were moving on earnings news early Wednesday. Bank of America gained 2.5 percent after reporting a big gain in profits as its legal costs fell sharply.

Railroad operator CSX rose 1.5 percent after its earnings came in ahead of expectations. KFC owner Yum Brands fell 2 percent after its revenue fell short of forecasts.

The Dow Jones industrial average was down 30 points, or 0.2 percent, to 18,023 as of 9:40 a.m. Eastern time.

Major indexes headed higher at the opening bell, following solid gains in Europe, then kept climbing throughout the afternoon. Nearly three stocks rose for every one that fell on the New York Stock Exchange, and every sector in the S&P 500 finished with gains.

Nine hours after a self-imposed deadline passed, European officials announced the breakthrough on Greece early Monday. 

European markets also rose sharply. China's stock market climbed for a second day, reversing course after a monthlong slump.

The Dow Jones industrial average gained 211 points, or 1.2 percent, to 17,760 Friday.

The Standard & Poor's 500 index increased 25 points, or 1.2 percent, to 2,076. The Nasdaq composite climbed 75 points, or 1.5 percent, to 4,997.

The gains were broad. Four stocks rose for every one that fell on the New York Stock Exchange.

Airline stocks rallied. American Airlines rose 4 percent and Delta Air Lines gained 5 percent.

European markets rose sharply on Friday. China's stock indexes climbed for a second day, reversing course after a monthlong slump.

The Dow Jones industrial average gained 212 points, or 1.2 percent, to 17,759.

The Standard & Poor's 500 index increased 23 points, or 1.1 percent, to 2,074 and the Nasdaq composite climbed 56 points, or 1.2 percent, to 4,979.

The halt occurred at about 11:30 a.m. Eastern time Wednesday.

The exchange said in a statement that it was experiencing a "technical issue" that it was working to resolve as quickly as possible.

Before trading was halted, U.S. indexes were lower as investors worried about China's ability to stem a stock market slide.

The Dow Jones industrial average was down 215 points, or 1.2 percent, to 17,561.

The Dow Jones industrial average declined 132 points, or 0.7 percent, to 17,649 as of 9:35 a.m. Eastern time.

The Standard & Poor's 500 gave up 13 points, or 0.6 percent, to 2,068. The Nasdaq fell 32 points, or 0.7 percent, to 4,965.

Stocks fell 6 percent in Shanghai despite the Chinese government's latest efforts to shore up the market. Chinese stocks have plunged in the last month but are still up 70 percent over the past year.

European markets were broadly higher as talks continue on Greece's debt woes.

KEEPING SCORE: Germany's DAX was down 0.9 percent to 10,791.62 and France's CAC-40 shed 1.1 percent to 4,661.36. Britain's FTSE 100 dropped 0.3 percent to 6.514.61. Wall Street looked set for small gains. Futures for the Dow Jones industrial average and the Standard & Poor's 500 were up 0.1 percent and 0.2 percent, respectively.

Greece is moving closer to defaulting on its debt and could be forced to abandon the euro currency.

The Dow Jones industrial average dropped 350 points, or 2 percent, to 17,596 Monday.

The Standard & Poor's 500 index sank 43 points, or 2.1 percent, to 2,057.

The Nasdaq composite tumbled 122 points, or 2.4 percent, to 4,958.

European markets fell even more. Stocks fell 3.6 percent in Germany and 3.7 percent in France.

Bond prices rose sharply as investors sought safety. The yield on the 10-year Treasury note fell to 2.32 percent.

The government reported early Thursday that spending surged in May by the biggest amount in six years. That's a sign of stronger economic growth ahead.

The Dow Jones industrial average rose 32 points, or 0.2 percent, to 17,996 as of 9:35 a.m. Eastern time.

The Standard & Poor's 500 index rose two points, or 0.1 percent, to 2,110.

The Nasdaq composite gained eight points, or 0.2 percent, to 5,129.

IAC/InteractiveCorp rose 4 percent after the company said it would spin off Match.com and Tinder, two dating sites, into a separate company.