LINCOLNSHIRE, Ill.–(BUSINESS WIRE)–CDW Corporation (Nasdaq:CDW): (Dollars in millions, except per share amounts) Three Months Ended June 30, 2021 Three Months Ended June 30, 2020 % Chg. Six Months Ended June 30, 2021 Six Months Ended June 30, 2020 % Chg. Net Sales $ 5,146.4 $ 4,365.7 17.9 $ 9,983.9 $ 8,754.9 14.0 Average Daily Sales1 80.4 68.2 17.9 78.6 68.4 14.9 Gross Profit 882.8 747.2 18.2 1,678.0 1,503.7 11.6 Operating Income 369.9 283.4 30.5 693.3 529.2 31.