The Teachers Insurance and Annuity Association of America-College Retirement Equities Fund is an American financial services organization that is a private provider of financial retirement services in the academic, research, medical, cultural and governmental fields. TIAA is listed on the Fortune 100 and serves over 5 million active and retired employees participating at more than 15,000 institutions and has $1 trillion in combined assets under management with holdings in more than 50 countries.