An
investment strategy in which
traders sell a
security in large quantities such that it lowers the
price in order to trigger
stop orders. When the stop orders are triggered, more
shares are sold, which triggers more stop orders, and the cycle continues. One may do this in order to drive the price down so that one may
buy the security back at an artificially low price. However, if gathering in the stops runs out of control, an
exchange may suspend stop orders for that security.