John Prestbo is editor and executive director of Dow Jones Indexes. He has responsibility for the exploration of new index ideas, as well as marketing, public relations and analytical research. He also is chairman of the Dow Jones Index Oversight Committee. Mr. Prestbo has a column, “Indexed Investor,” on the highly regarded business and finance Web site MarketWatch. He has been a regular and guest contributor on various cable television business programs, including CNBC’s “Morning Call” and “Squawk Box,” as well as Fox Business News and Wall Street Journal Online.