Bob Greifeld assumed leadership of Nasdaq in 2003, when the company's primary business was operating one equity market in the US. During his tenure he led Nasdaq through a series of complex, innovative acquisitions that have extended the company’s footprint across the world, spanning all asset classes. In 2008, he led the exchange's combination with Stockholm-based OMX AB, as well as acquisitions of the Philadelphia Stock Exchange, the Boston Stock Exchange and Nord Pool, Europe's largest power market. Greifeld has been a strong advocate for modernizing exchanges and financial regulation to keep America's capital markets competitive. He has also called for CEOs to embrace sound, modern regulation as consistent with good business practices. Prior to joining Nasdaq, Greifeld was an EVP at SunGard Data Systems, responsible for all of SunGard’s sell-side businesses and its buy-side transaction routing businesses. He joined SunGard in 1999 through SunGard’s acquisition of Automated Securities Clearance where he was president and COO.