From Optiver´s website : IT is key to making the best market. The origin of an order is irrelevant to us. The only decisive factor is the speed with which an order is received. This has led to an increase in global volumes and a need for extensive investments and development in IT. Today, our offices employ one to two IT developers for every one trader. http://www.optiver.com/amsterdam/the-company/core-business Ha, ha, ha, ha, ha, ha. Are they all on "speed" at Optiver...?