SPX | A complete S&P 500 Index index overview by MarketWatch. View stock market news, stock market data and trading information. Felix Rosenqvist won the 110th Running of the Indianapolis 500! Sunday's race featured the most lead changes ever, multiple cautions for crashes and weather, different strategies from crews, and a. S&P 500 is a stock market index tracking the stock performance of 500 leading companies listed on stock exchanges in the United States. It is one of the most commonly followed equity indices and. Felix Rosenqvist won the 110th Indianapolis 500, edging David Malukas in the closest finish in the legendary race's history. Trade the world’s most popular markets: CFDs on Forex, Shares, Commodities, Indices, ETFs & Options. S&P 500 Today: Get all information on the S&P 500 Index including historical chart, news and constituents. Find the latest information on S&P 500 INDEX (^SPX) including data, charts, related news and more from Yahoo Finance.