Exhibit 21

INTERACTIVE DATA CORPORATION SUBSIDIARIES

as of December 31, 2006



|                                                                                                                                                                                                                                                                                   |  |                                                                                                    
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |  | ---------------------------------------------------------------------------------------------------
|Subsidiary Name                                                                                                                                                                                                                                                                    |  | State or country ofincorporation
ororganization                                                    
|Infotec Holdings Corp.                                                                                                                                                                                                                                                             |  | Delaware                                                                                           
|Subsidiaries of Infotec Holdings Corp.                                                                                                                                                                                                                                             |  |                                                                                                    
|Infotec Capital Management Corporation FT Interactive Data Corporation                                                                                                                                                                                                             |  | Delaware Delaware                                                                                  
|Subsidiaries of FT Interactive Data Corporation                                                                                                                                                                                                                                    |  |                                                                                                    
|Exshare Financial, Inc. Interactive Data Canada, Inc. FT Information (Philippines) Inc.                                                                                                                                                                                            |  | Delaware Canada Philippines                                                                        
|                                                                                                                                                                                                                                                                                   | 
|IDCO Worldwide Holdings Ltd.                                                                                                                                                                                                                                                       |  | United Kingdom                                                                                     
|Subsidiaries of IDCO Worldwide Holdings Ltd.                                                                                                                                                                                                                                       |  |                                                                                                    
|IDCO Overseas Capital Management Ltd. IDCO Overseas Holdings Ltd.                                                                                                                                                                                                                  |  | United Kingdom United Kingdom                                                                      
|Subsidiaries of IDCO Overseas Holdings Ltd.                                                                                                                                                                                                                                        |  |                                                                                                    
|Interactive Data (Australia) Pty Ltd. Interactive Data (Singapore) PTE Ltd. FT Interactive Data (Ireland) Ltd. FT Interactive Data (Jersey) Ltd. eSignal (Europe) Ltd. Interactive Data (Hong Kong) Ltd. Interactive Data Corporation France
S.A.S. Interactive Data (Europe) Ltd. |  | Australia Singapore Ireland Channel Islands, UK United Kingdom Hong Kong, PRC France United Kingdom
|Subsidiaries of Interactive Data (Europe) Ltd.                                                                                                                                                                                                                                     |  |                                                                                                    
|Exshare Financial (US) Ltd. Exshare Statistical Services Ltd. W & W Ltd. Exshare Computing Ltd.                                                                                                                                                                                    |  | United Kingdom United Kingdom United Kingdom United Kingdom                                        
|Subsidiary of Exshare Computing Ltd.                                                                                                                                                                                                                                               |  |                                                                                                    
|The Exchange Telegraph Company Ltd.                                                                                                                                                                                                                                                |  | United Kingdom                                                                                     
|                                                                                                                                                                                                                                                                                   | 
|Detective Nominees, Inc.                                                                                                                                                                                                                                                           |  | Delaware                                                                                           
|                                                                                                                                                                                                                                                                                   | 
|GTIS Corporation                                                                                                                                                                                                                                                                   |  | Delaware                                                                                           
|Subsidiary of GTIS Corporation                                                                                                                                                                                                                                                     |  |                                                                                                    
|GTIS Europe, Ltd.                                                                                                                                                                                                                                                                  |  | United Kingdom                                                                                     
|                                                                                                                                                                                                                                                                                   | 
|Comstock, Inc.                                                                                                                                                                                                                                                                     |  | New York                                                                                           
|                                                                                                                                                                                                                                                                                   | 
|BI Purchasing, Inc.                                                                                                                                                                                                                                                                |  | Utah                                                                                               
|                                                                                                                                                                                                                                                                                   | 
|Checkrite International, Inc.                                                                                                                                                                                                                                                      |  | Utah                                                                                               
|Subsidiary of Checkrite International, Inc.                                                                                                                                                                                                                                        |  |                                                                                                    
|Checkrite, Ltd.                                                                                                                                                                                                                                                                    |  | Colorado                                                                                           
|Subsidiaries of Checkrite, Ltd. Checkrite of California, Inc.                                                                                                                                                                                                                      |  | California                                                                                         



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|                                                                                                                                                                                                                                           |  |                                                     
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |  | ----------------------------------------------------
|Checkrite of Minnesota, Inc. Checkrite of Oregon, Inc. Checkrite of Kansas City, Inc. Checkrite Oklahoma City, Inc.                                                                                                                        |  | Minnesota Oregon Kansas Oklahoma                    
|                                                                                                                                                                                                                                           | 
|CSN, Inc.                                                                                                                                                                                                                                  |  | Utah                                                
|                                                                                                                                                                                                                                           | 
|eSignal, Inc.                                                                                                                                                                                                                              |  | Delaware                                            
|                                                                                                                                                                                                                                           | 
|eSignal.com, Inc.                                                                                                                                                                                                                          |  | Delaware                                            
|                                                                                                                                                                                                                                           | 
|Bonneville Equipment Company                                                                                                                                                                                                               |  | Utah                                                
|                                                                                                                                                                                                                                           | 
|Shark Holdings, Inc.                                                                                                                                                                                                                       |  | Delaware                                            
|                                                                                                                                                                                                                                           | 
|Data Broadcasting Corp.                                                                                                                                                                                                                    |  | British Virgin Isles                                
|                                                                                                                                                                                                                                           | 
|Interactive Data Managed Solutions, LLC Interactive Data Management & Services Verwaltung GmbH                                                                                                                                             |  | Delaware Germany                                    
|Subsidiary of Interactive Data Management & Services, LLC and Interactive Data Management & Services Verwaltung
GmbH                                                                                                                       |  |                                                     
|Interactive Data Management & Services GmbH & Co. K.G.                                                                                                                                                                                     |  | Germany                                             
|Subsidiaries of Interactive Data Management & Services GmbH & Co. K.G.                                                                                                                                                                     |  |                                                     
|Interactive Data Managed Solutions Nordic Oy Interactive Data Managed Solutions AG                                                                                                                                                         |  | Finland Germany                                     
|Subsidiaries of IS.Teledata AG                                                                                                                                                                                                             |  |                                                     
|Interactive Data Managed Solutions S.r.l. Interactive Data Managed Solutions S.L. Interactive Data Managed Solutions Ltd. Interactive Data Managed Solutions AG Interactive Data Managed Solutions SAS IS.Teledata MD Solutions France SAS |  | Italy Spain United Kingdom Switzerland France France