1st LD Writethru: U.S. stocks retreat on Greek uncertainty

U.S. stocks ended lower on Friday, with the three major indices snapping a three-day winning streak, as investors were assessing the unfolding Greek debt crisis.

The Dow Jones Industrial Average fell 101.56 points, or 0.56 percent, to 18,014.28. The S&P 500 dipped 11.48 points, or 0.54 percent, to 2,109.76. The Nasdaq Composite Index decreased 15.95 points, or 0.31 percent, to 5,117.00.

In the absence of major economic reports, investors shifted their focus to the Greek debt situation.

Eurozone leaders will hold an emergency summit next Monday to try to avert a Greek default. This comes after a crucial meeting of the eurozone's finance ministers ended without an agreement over the Greece debt issue.

"No agreement is in sight over Greece debt deal," Dutch Finance Minister and Eurogroup President Jeroen Dijsselbloem told the press after Eurozone finance ministers' meeting in Luxembourg.

On June 30, the extension of Greece's second bailout expires. On the same day, Athens needs to repay some 1.5 billion euros (1. 69 billion U.S. dollars) of loan installments to the International Monetary Fund.

European equities closed mixed on Friday as Greece's deadlock on debt negotiation continued to haunt the market, with British benchmark FTSE 100 Index edging up 0.04 percent.

In Asia, Chinese shares nosedived on Friday as IPO pressure continued to weigh on the market, with the benchmark Shanghai Composite Index plummeting 6.42 percent. The major Shanghai index dived by 13 percent from the previous week, the biggest weekly drop in seven years.

U.S. stocks surged on Thursday, with the Nasdaq Composite Index surpassing its dotcom bubble peak set in March 2000, as investors digested Federal Reserve Chair Janet Yellen's dovish tone on rate hikes.

For the week, all the three major indices posted sizable gains, with the Dow, the S&P 500 and the Nasdaq up 0.6 percent, 0.7 percent and 1.3 percent, respectively. Endite