Stocks inch higher on Wall Street at midday

In this Wednesday, April 24, 2013, photo, Kenneth Polcari, right, works with fellow traders on the floor of the New York Stock Exchange. Japan's benchmark stock index surged Friday May 10, 2013 after the dollar hit a four-year high against the yen. Markets elsewhere gained as traders digested a positive U.S. jobs report. (AP Photo/Richard Drew)

NEW YORK (AP) — Stock indexes are mostly higher in midday trading on Wall Street and are on track to post solid gains for the week.

The Dow Jones industrial average moved between small gains and losses Friday morning. It was down 16 points at 15,066 as of noon Eastern Daylight Time. Other indexes rose slightly.

The Dow is up 0.6 percent for the week and 15 percent so far this year.

Prices for commodities including crude oil and gold fell sharply as the dollar continued to strengthen against other currencies, especially the Japanese yen. and chipmaker Nvidia rose sharply after reporting higher earnings.

The Standard & Poor's 500 index was up a fraction of a point at 1,627.

The Nasdaq composite was up 12 points at 3,421.