Westlake Chemical Corporation reported a strong first quarter in 2021, with net income attributable to Westlake of $242 million, or $1.87 per diluted share, on net sales of $2,357 million. The increases in net income and income from operations were primarily driven by higher sales prices and integrated margins for most of their major products including polyethylene and PVC, as well as higher earnings resulting from strong demand in their downstream building products business.