. . . EXHIBIT 21 SUBSIDIARIES OF T. ROWE PRICE GROUP, INC. DECEMBER 31, 2002 Subsidiary companies and place of incorporation Ownership - ----------------------------------------------------------------------------------------------------- T. Rowe Price Advisory Services, Inc. (Maryland) 100% T. Rowe Price Associates, Inc. (Maryland) 100% T. Rowe Price (Canada), Inc. (Maryland) 100% T. Rowe Price Investment Services, Inc. (Maryland) 100% T. Rowe Price Investment Technologies, Inc. (Maryland) 100% T. Rowe Price Retirement Plan Services, Inc. (Maryland) 100% T. Rowe Price Savings Bank (Maryland) 100% T. Rowe Price Services, Inc. (Maryland) 100% T. Rowe Price Stable Asset Management, Inc. (Maryland) 100% TRP Finance, Inc. (Delaware) 100% T. Rowe Price International, Inc. (Maryland) 100% TRP Suburban Second, Inc. (Maryland) 100% T. Rowe Price Global Asset Management Ltd. (United Kingdom) 100% T. Rowe Price Global Investment Services Ltd. (United Kingdom) 100% Other subsidiaries have been omitted because, when considered in the aggregate, they do not constitute a significant subsidiary. Page 46