E*Trade Group, a provider of online investing services, and Banc One, headquartered in Columbus, Ohio, announced that they will establish a cobranded Web site that will offer customers of Banc One the ability to manage their investments using E*Trade's online securities transaction, information, and portfolio management services. E*Trade customers, in turn, will have online access to a range of integrated financial services, including checking and savings accounts, loans, and credit and debit cards.