      ECNs have become an integral part of over the counter executions inrecent years, and account for roughly 25 percent of all Nasdaq executionstoday. Instinet (INCA) is the most widely used of all ECNs and is onlyoffered directly to institutions and high net-worth individuals. However,using SNET, a trader can preference an INCA order and take advantage of theliquidity that INCA provides in the marketplace without having directaccess to it. The only disadvantage of using INCA is the cost. In additionto the transaction cost that brokers charge traders, Instinet charges about1.5 cents per share. With as little as a sixteenth improvement in price, itis beneficial to take advantage of INCA.