Money What is a bull market? As S&P 500 index swings back, here’s what you should know June 9, 2023June 12, 2023Paul Davidson, USA TODAYComments Off on What is a bull market? As S&P 500 index swings back, here’s what you should know The S&P 500 index just returned to being in a bull market. What is a bull and bear market? And does it mean clear sailing for stocks?