NEW YORK — Major indexes are edging higher in early trading on Wall Street ahead of the July 4th holiday.

Ford is getting a boost after reporting its best June sales since 2006. General Motors also rose.

The Standard & Poor's 500 index was up two points, or 0.1 percent, to 1,616 in the first few minutes of trading Tuesday.

The Dow Jones industrial average rose 17 points, or 0.1 percent, to 14,992. The Nasdaq composite was up four points, or 0.1 percent, at 3,439.

U.S. markets will be closed Thursday for Independence Day.

Zynga, the troubled online game maker, jumped 10 percent to $3.37 after the company announced late Monday that its CEO was stepping aside and would be replaced by the head of Microsoft's Xbox division.