What happened Shares of Builders FirstSource, Inc. (NASDAQ: BLDR) surged more than 10% by 2:45 p.m. EDT on Friday after the building supply company reported strong third-quarter results. While the company's overall sales volume grew 1.5%, price increases relating to commodity inflation added 11.5% to its top line. Now what "While the rate of market growth has recently eased, the long-term outlook for the housing industry continues to be favorable, as do the opportunities for Builders FirstSource to generate profitable growth for the balance of 2018 and beyond," stated CEO Chad Crow in the third-quarter earnings release.