S&p 500 prices by month
2 Sep 2019 "Since 1950, September has been the worst month for the S&P 500 Index, which measures the degree of variance in stock price movements, 21 Feb 2020 Over the following 12 months (February 20, 2019 to February 19, 2020), the price of the S&P 500 increased by 21.6%, while the forward 12-month