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 500 = 2 2 × 5 3. It is an Achilles number, meaning that it is divisible by the squares of its prime factors (i.e. 4 and 25) but is not a power itself, and a Harshad number, meaning it is divisible by the sum of its digits. The S&P 500 (Standard and Poor's 500) [6] is a stock market index tracking the stock performance of 500 companies listed on stock exchanges in the United States that are considered to have large market capitalizations. Start trading with Plus500™ platform: CFDs on Shares, Forex, Commodities, Indices. Fast and efficient trading. Free demo account. Access a suite of advanced charting tools to power your technical analysis. Powerful trading. Seamless app. Explore +Insights. Get real-time stock quotes, news, financial details, and analytics for S&P 500 from Google Finance. SPX | A complete S&P 500 Index index overview by MarketWatch. View stock market news, stock market data and trading information. Find the latest information on S&P 500 (^GSPC) including data, charts, related news and more from Yahoo Finance Trade US Futures on Bitcoin, S&P 500, Oil, and more with Plus500, a global leader with 24/7 customer support at your disposal.