Exhibit 21 PAGE 1 SUBSIDIARIES OF THE COMPANY Jurisdiction of Incorporation or Name of Subsidiary Organization - ------------------ ---------------- Dow Jones AER Company, Inc. Delaware Economic Research Company, Inc. Delaware Dow Jones Broadcasting (Asia), Inc. Delaware Dow Jones Broadcasting (Europe), Inc. Delaware Dow Jones Broadcasting (USA), Inc. Delaware Dow Jones Canada, Inc. Canada Dow Jones Financial Publishing Corp. Delaware Dow Jones Information Publishing, Inc. Delaware Dow Jones Information Services International (HK) Ltd. Hong Kong Dow Jones International Marketing Services (U.K.), Ltd. United Kingdom Dow Jones International Marketing Services GmbH Germany Dow Jones International Marketing Services, Inc. Delaware Dow Jones (Japan) K.K. Japan Dow Jones Newsprint Company, Inc. Delaware Dow Jones Printing Company (Asia), Inc. Delaware Dow Jones Publishing Company (Asia), Inc. (90% owned) Delaware Dow Jones Publishing Company (Europe), Inc. Delaware Dow Jones Real Estate Development Corporation Delaware Dow Jones Southern Holding Company, Inc. Delaware Dow Jones Ventures II, Inc. Delaware Dow Jones Ventures III, Inc. Delaware Dow Jones Virginia Company, Inc. Delaware Federal Filings, Incorporated Delaware IDD Enterprises, L.P. Delaware National Delivery Service, Inc. Delaware Ottaway Newspapers, Inc. Delaware Essex County Newspapers, Inc. Massachusetts News-Sun, Inc. Arizona ONI Press, Inc. Delaware Research and Marketing Solutions, Inc. Delaware The Inquirer & Mirror, Inc. Massachusetts Portuguese-American Publications, Inc. Massachusetts Review Publishing Company Limited Hong Kong The China Phone Book Co. Ltd. Hong Kong Dow Jones Markets Holdings, Inc. Delaware Dow Jones Markets Canada Inc. Ontario Dow Jones Markets Systems, Inc. California Dow Jones BD Services, Inc Delaware Dow Jones Markets Italia s.p.A Italy Indepth Data, Inc. Delaware Dow Jones Markets, Inc. New York Dow Jones Markets Puerto Rico, Inc. Delaware Telerate Financial Services Co. Delaware Dow Jones Markets International Inc. Delaware PAGE 2 Jurisdiction of Incorporation or Name of Subsidiary Organization - ------------------ ---------------- Dow Jones Markets International Company (100% owned Partnership) Delaware Dow Jones Markets (Panama) Inc. Panama Servicios Informativos Telerate (Chile) Limitada Chile Dow Jones Markets Asia-Pacific Singapore Pte Ltd Singapore Dow Jones Markets (Australia) Pty Limited Australia Telerate (Bahamas) Limited Bahamas Dow Jones Markets Belgium SA Belgium Dow Jones Markets Cyprus Limited Cyprus Dow Jones Markets Danmark A/S Denmark Dow Jones Markets Limited United Kingdom Dow Jones Markets Finland OY Finland Dow Jones Markets France SA France Dow Jones Markets Hellas A.E. Greece Dow Jones Markets Ireland Limited Ireland Dow Jones Markets Netherlands BV Netherlands Dow Jones Markets Espana S.A. Spain Dow Jones Markets Sweden AB Sweden Dow Jones Markets (Thailand) Limited Thailand Dow Jones Markets Technical Services Limited United Kingdom Telefin SA Greece Dow Jones Markets (Switzerland) AG Switzerland Dow Jones Markets (Singapore) Pte Ltd Singapore Dow Jones Markets de Venezuela, C.A. Venezuela Dow Jones Markets (Hong Kong) Limited Hong Kong Dow Jones Markets (Asia Pacific) Limited Hong Kong Dow Jones Markets Financial Information Services, Inc. Delaware Dow Jones Telerate Argentina S.A. Argentina Dow Jones Markets Finansal Sistemler A.S. Turkey Dow Jones Markets Informacao Financeira, Lda. Portugal Dow Jones Markets Ges.m.b.H. Austria Dow Jones Markets Luxembourg SARL Luxembourg Dow Jones Markets (Malaysia) SDN BHD Malaysia Dow Jones Markets (New Zealand) Ltd. New Zealand Advance Pacific Limited Cook Islands Dow Jones Markets GmbH Germany Dow Jones Markets Norway AS Norway Dow Jones Markets (South Africa) (Pty) Limited South Africa Dow Jones Support Limited Liability Company Russia All of the above subsidiaries are included in the consolidated financial statements.