Also found in: Financial, Acronyms, Wikipedia.
S&P 500(ĕs′ ənd pē′)
A trademark for a US stock-market index composed of 500 actively traded, large cap stocks.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.