Exhibit 21 SUBSIDIARIES OF SOTHEBY'S HOLDINGS, INC. As of December 31, 2004, the significant subsidiaries of Sotheby's Holdings, Inc. which are wholly owned except where indicated are as follows: JURISDICTION OF INCORPORATION --------------- Sotheby's Holdings, Inc. Michigan Sotheby's Financial Services, Inc. Nevada SPTC, Inc. Nevada SPTC Delaware, LLC Delaware Sotheby's Fine Art Holdings, Inc. Delaware Fine Art Insurance Ltd. Bermuda Sotheby's Inc. New York Oatshare Limited United Kingdom Sotheby's United Kingdom Sotheby's Global Trading Company GmbH Switzerland Other than the subsidiaries listed above, the Registrant has 23 directly and indirectly controlled domestic subsidiaries and 32 directly and indirectly controlled foreign subsidiaries.