An investment firm, traditionally called a market maker, who could match buy and sell orders from clients in-house, provided that they conform to certain criteria. Instead of sending orders to a central exchange, such as the London Stock Exchange, banks can match them with other orders on its own book. Examples of such firms include Credit Suisse and UBS. SIs are able to compete directly with stock exchanges and automated dealing systems, but they have to make such dealings transparent. They have to show a price before a trade is made. After a trade is made, they have to give information about the transaction, just like conventional trading exchanges.