S&P 500

The S&P 500 is the number most people mean when they say the market. It tracks 500 of the largest companies listed in the United States and captures roughly 80% of the total value of the domestic stock market, which is why it serves as the default benchmark for US equities. Standard & Poor's introduced the modern 500-stock version in 1957, and S&P Dow Jones Indices has maintained it since. Weighting is by free-float market capitalization, so a company's sway rises with its market value, and that math has handed an outsized share of the index to a handful of technology giants in recent years. A committee, not a pure formula, decides which companies qualify, judging profitability and liquidity. Trillions of dollars in index funds and retirement accounts track it directly.

On MyRWA, SP500 trades tokenized across 57 on-chain venues - see the listings below.