Exhibit 32.2

CERTIFICATION PURSUANT TO
18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO
SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

     In connection with the Annual Report on Form 10-K for the period ending December 31, 2006, as filed with the Securities and Exchange Commission (the “Report”) of Nuveen Investments, Inc. (the “Company”) and pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, the undersigned, as President of the Company, hereby certifies that:

     (i) the Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

     (ii) the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Dated as of this 26th day of February 2007.

/s/ John P. Amboian  

John P. Amboian 

President 

A signed original of this written statement required by Section 906 has been provided to the Company and will be retained by the Company and furnished to the Securities and Exchange Commission or its staff upon request.