Based on your financial expertise, provide your response or viewpoint on the given financial question or topic. The response format is open.

Where I can find S&P 500 stock data history? 
I assume you're after a price time series and not a list of S&P 500 constituents?  Yahoo Finance is always a reasonable starting point. Code you're after is ^GSPC: https://finance.yahoo.com/quote/%5EGSPC/history?p=^GSPC  There's a download data button on the right side.