EXHIBIT 21 SUBSIDIARIES OF T. ROWE PRICE ASSOCIATES, INC. DECEMBER 31, 1999 Subsidiary companies and state of incorporation Ownership _____________________________________________________________________________ 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 Services, Inc. (Maryland) 100% T. Rowe Price Stable Asset Management, Inc. (Maryland) 100% TRP Finance, Inc. (Delaware) 100% Rowe Price-Fleming International, Inc. (Maryland) 50% TRP Suburban Second, Inc. (Maryland) 100% Other subsidiaries have been omitted because, when considered in the aggregate, they do not constitute a significant subsidiary.