QXO a new player in building-products distribution, has made an offer to acquire Beacon Roofing Supply according to people familiar with the matter. Beacon has a market value of about $6.2 billion, with its share price up around 14% so far this year. Herndon, Va.-based Beacon is the largest publicly-traded distributor of roofing materials and complementary building products in the U.S. and Canada, according to the company’s website.