S&P MidCap 400 in Focus: WIND COCO

The Standard & Poor's MidCap 400 index rose in midday trading Friday as the broader markets reacted to a mixed bag of economic data.

The S&P MidCap 400 is an index used to track mid-sized companies which have a market capitalization of $1.5 billion to $5.5 billion. According to S&P, midcap stocks make up roughly 7 percent of the U.S. equities market.

Early Friday the Commerce Department said personal spending barely rose last month _ 0.2 percent _ and that personal income growth fell sharply from March. Yet the government also said inflation at the personal spending level rose in April by a tame 0.1 percent, when food and energy costs are excluded.

Shares of Wind River Systems Inc. advanced $1.50, or 16.7 percent, to $10.46. The software developer late Thursday posted an adjusted profit above Wall Street's estimates in the fiscal first-quarter, and said it expects to swing to a profit in fiscal 2009.

Shares of Harris Corp. gained $4.41, or 7.1 percent, to $66.37. The Wall Street Journal said Friday the company has begun "fielding expressions of interest from potential buyers" with preliminary bids in the $10 billion range.

Shares of Commercial Metals Co. increased $2.08, or 6 percent, to $36.71.

On the declining side, shares of Corinthian Colleges Inc. dropped 55 cents, or 4.2 percent, to $12.44.

Shares of PMI Group Inc. shed 22 cents, or 3.6 percent, to $5.89.

Shares of Louisiana-Pacific Corp. lost 52 cents, or 4.1 percent, to $12.18.