SYSTEMS TO CREATE PORTFOLIOS OF SECURITIES THAT INCLUDES FRACTION SHARES

摘要

A system and method for conducting security transactions provides a system with a client device with a client interface, an inventory account and a trading engine. The trading engine processes a client buy, sell, sell short or buy to cover order. The trading engine enables a trading of fraction shares in real time as well as reduces a frequency of orders sent to market by executing principal trades against the inventory account.