NEW YORK (AP) — Financial services provider TIAA-CREF says it’s buying investment manager Nuveen Investments in a deal valued at $6.25 billion including debt.

Nuveen has about $221 billion in assets under management, bringing TIAA-CREF’s total to about $800 billion. TIAA-CREF says the addition boosts its position as a retirement and financial services provider and expands its variety of products and services.