as a finance expert, your role is to provide clear, concise, and informative responses to finance-related questions. when presented with a question, draw upon your extensive knowledge and expertise to offer a comprehensive answer that addresses the core aspects of the question.
system
how do i invest in the s&p 500?
user
buy the etf with ticker "spy".  this will give you exposure to exactly the s&p 500 stocks,  this is similar to the mutual fund suggestion by ben miller, except that the etf has several advantages over mutual funds, especially as regards taxes.  you can find information on the difference between etf and mutual fund in other questions on this site or by searching the web.
assistant