running housing boom. ID:nN01159191 The data helped shares of home builders, such as Pulte Homes Inc., up 3.3 percent to $79.02, and KB Home, up 1.2 percent to $68.36. Shares of Best Buy Co. Inc. gained 3.4 percent to $56.29 on the NYSE after Goldman Sachs raised its rating on the electronics retailer to "outperform" from "in line." School Specialty Inc., which provides supplemental learning products, soared 19 percent to $47.03 a day after it said it had agreed to be acquired by an affiliate of private investment company Bain Capital Partners for about $1.5 billion including debt. Delta Air Lines Inc. rose nearly 2.3 percent to $3.94 after it said General Electric Co.'s finance arm has agreed to relax certain requirements under a credit agreement, a move seen as helping the carrier to avoid a bankruptcy filing this year. ID:nN01722416 Engineered Support Systems Inc. fell 10.5 percent to $34.91 on Nasdaq after the defense contractor cut its full-year earnings forecast due to delays in a major program.