Exhibit 21

INTERACTIVE DATA CORPORATION SUBSIDIARIES

as of December 31, 2008



|                                                                 |  |                                                  
|---------------------------------------------------------------- |  | -------------------------------------------------
|Subsidiary Name                                                  |  | State or country of incorporation or organization
|Infotec Holdings Corp.                                           |  | Delaware                                         
|Subsidiaries of Infotec Holdings Corp.                           |  |                                                  
|Interactive Data Pricing and Reference Data, Inc.                |  | Delaware                                         
|Subsidiaries of Interactive Data Pricing and Reference Data, Inc |  |                                                  
|Exshare Financial, Inc.                                          |  | Delaware                                         
|Interactive Data Canada, Inc.                                    |  | Canada                                           
|FT Information (Philippines) Inc.                                |  | Philippines                                      
|                                                                 | 
|IDCO Worldwide Holdings Ltd.                                     |  | United Kingdom                                   
|Subsidiaries of IDCO Worldwide Holdings Ltd.                     |  |                                                  
|IDCO Overseas Capital Management Ltd.                            |  | United Kingdom                                   
|IDCO Overseas Holdings Ltd.                                      |  | United Kingdom                                   
|Subsidiaries of IDCO Overseas Holdings Ltd.                      |  |                                                  
|Interactive Data (Australia) Pty Ltd.                            |  | Australia                                        
|Interactive Data (Singapore) PTE Ltd.                            |  | Singapore                                        
|FT Interactive Data (Ireland) Ltd.                               |  | Ireland                                          
|FT Interactive Data (Jersey) Ltd.                                |  | Channel Islands, UK                              
|eSignal (Europe) Ltd.                                            |  | United Kingdom                                   
|Interactive Data (Hong Kong) Ltd.                                |  | Hong Kong, PRC                                   
|Interactive Data Corporation France S.A.S.                       |  | France                                           
|Interactive Data (Europe) Ltd.                                   |  | United Kingdom                                   
|Subsidiaries of Interactive Data (Europe) Ltd.                   |  |                                                  
|Klers Financial Data Service S.r.l.                             |  | Italy                                            
|Interactive Data Japan KK                                        |  | Japan                                            
|Exshare Financial (US) Ltd.                                      |  | United Kingdom                                   
|Exshare Statistical Services Ltd.                                |  | United Kingdom                                   
|W & W Ltd.                                                       |  | United Kingdom                                   
|Exshare Computing Ltd.                                           |  | 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                                   
|                                                                 | 
|Interactive Data Real Time Services, 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                                       
|Checkrite of Minnesota, Inc.                                     |  | Minnesota                                        
|Checkrite of Oregon, Inc.                                        |  | Oregon                                           
|Checkrite of Kansas City, Inc.                                   |  | Kansas                                           
|Checkrite Oklahoma City, Inc.                                    |  | Oklahoma                                         
|                                                                 | 
|CSN, Inc.                                                        |  | Utah                                             
|                                                                 | 
|eSignal, Inc.                                                    |  | Delaware                                         
|                                                                 | 
|eSignal.com, Inc.                                                |  | Delaware                                         
|                                                                 | 
|Bonneville Equipment Company                                     |  | Utah                                             



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|                                                                                                                     |  |                                                  
|-------------------------------------------------------------------------------------------------------------------- |  | -------------------------------------------------
|Subsidiary Name                                                                                                      |  | State or country of incorporation or organization
|                                                                                                                     | 
|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                                                                         |  | Finland                                          
|Interactive Data Managed Solutions AG                                                                                |  | Germany                                          
|Subsidiaries of IS.Teledata AG                                                                                       |  |                                                  
|Interactive Data Managed Solutions S.r.l.                                                                            |  | Italy                                            
|Interactive Data Managed Solutions S.L.                                                                              |  | Spain                                            
|Interactive Data Managed Solutions Ltd.                                                                              |  | United Kingdom                                   
|Interactive Data Managed Solutions AG                                                                                |  | Switzerland                                      
|IS.Teledata MD Solutions France SAS                                                                                  |  | France                                           
|                                                                                                                     | 
|Interactive Data Cayman Ltd.                                                                                         |  | Cayman Islands                                   
|                                                                                                                     | 
|IDCO Canada Holdings Inc.                                                                                            |  | Canada                                           

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