Definition of "program trading" []

• Large-scale, computer-assisted trading of stocks or other securities according to systems in which decisions to buy and sell are triggered automatically by fluctuations in price. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.