Money S&P 500 closes out 2020 at record high after a quiet trading day but a year of wild swings December 31, 2020December 31, 2020 Damian J. Troise, Associated Press Comments Off on S&P 500 closes out 2020 at record high after a quiet trading day but a year of wild swings S&P 500 ends 2020 at record high after mixed trading day but a year of wild swings amid COVID-19 pandemic