Google on Friday dealt another blow to Wall Street's traditional way of handling new stock market listings as it appeared to do away with the idea of using a core group of banks to act as co-lead managers on its initial public offering.

The internet search engine company named a list of 31 banks and brokers that would act as underwriters for its $2.7bn IPO, which is expected later this summer. However, other than Morgan Stanley and Credit Suisse First Boston, which had already been named to lead the deal, none of the others were singled out to act as co-leads.