The US stocks closed lacklustre session mixed on Tuesday, 22 December 2020, with the technology-heavy Nasdaq Composite settling higher, while the S&P 500 and the Dow Jones Industrial Average closed lower. The choppy trading on Wall Street came as traders seemed reluctant to make significant moves amid concerns about elevated Covid-19 infection levels and a new strain of the virus in Europe that overshadowed Congress' approval of a Covid-19 relief package. At the close of trade, the Dow Jones Industrial Average index fell 200.94 points, or 0.67%, to 30,015.51. The S&P 500 index was down 7.66 points, or 0.21%, to 3,687.26. The tech-heavy Nasdaq Composite Index rose by 65.40 points, or 0.51%, to 12,807.92.