insider trading


the illegal buying and selling of securities by persons acting on privileged information.

Origin of insider trading

First recorded in 1965–70

Related forms

insider trader, noun Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for insider trading

Culture definitions for insider trading

insider trading

The unlawful practice of using information that comes from a source “inside” the business but is not available to the general public to trade on the stock market. This activity is prohibited by law and is policed by the Securities and Exchange Commission.


In the mid-1980s, several revelations of insider trading rocked Wall Street.
The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.