Concentration on Cost Savings: Builders FirstSource completed the merger with BMC Stock Holdings on Jan 1, 2021. Through this merger, the company's customer outreach across the country will increase many folds and that will deliver larger economies of scale. Builders FirstSource's elevated scale and a very comfortable balance sheet position enables it to anticipate an annual run-rate synergy of $130-$150 million by the end 2023. Also, the company is on its course to realize $60-$70 million of its targeted cost synergy by the end of 2021.