Builders FirstSource, Inc. (NYSE:BLDR) shares are trading lower following the first quarter earnings result. The company reported adjusted earnings per share of $2.65, beating the analyst consensus of $2.30.  The company reported quarterly sales of $3.891 billion, beating the street view of $3.824 billion. Sales rose 0.2%, with core organic sales essentially flat, in line with expectations, and growth from acquisitions partially offset by ...