ISIN code for the S and P 500 index?

The ISIN code for the S&P 500 index is US78378X1072. This code is used to uniquely identify the index in financial transactions and reporting. The S&P 500 itself is often tracked through various exchange-traded funds (ETFs), such as the SPDR S&P 500 ETF (SPY), which has its own ISIN code.