What is Foolsaurus?

It's a glossary of investing terms edited and maintained by our analysts, writers and YOU, our Foolish community. Get Started Now!


S and P 500

The S&P 500 is an index of 500 large cap companies maintained by Standard and Poor's.

Note to editors: We will be creating this as "S&P 500" once our software starts playing along.
Continue editing here and we'll move the changes over once we figure out the issue.

Expanded Definition

Many index funds mimic the S&P 500, as does the spiders (AMEX:SPY) exchange-traded fund. Standard and Poor's introduced the index we now know as the S&P 500 in 1923. At the time it covered 233 companies. This index was expanded by Standard and Poor's in 1957 to 500 companies.

Related Terms

Recent Mentions on Fool.com

Advertisement