By combining Euroyen and Eurodollar positions on a single exchange, traders can benefit from reduced overall performance bond requirements. To monitor risk, both exchanges use Chicago Mercantile Exchange's® (CME) Standard Portfolio Analysis of Risk®(SPAN) system, designed to evaluate the overall risk in an entire portfolio. To the extent that positions in Euroyen and Eurodollar futures act to reduce the overall risk of a given portfolio, SPAN minimum performance bond requirements may be lower for these portfolios than if the positions were held on separate exchanges. Users will post performance bonds based on true intermarket risk exposure, rather than on a single market segment, resulting in potentially substantial cost savings.