SECURITIES AND EXCHANGE COMMISSION 

Washington, D.C. 20549

____________________

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the

Securities Exchange Act of 1934

Date of Report: January 22, 2010

(Date of earliest event reported)

PRINCIPAL FINANCIAL GROUP, INC. 

(Exact name of registrant as specified in its charter)

Delaware	1-16725	42-1520346
(State or other jurisdiction	(Commission file number)	(I.R.S. Employer
of incorporation)		Identification Number)

711 High Street, Des Moines, Iowa 50392
(Address of principal executive offices)
(515) 247-5111
(Registrant’s telephone number, including area code)
Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing
obligation of the registrant under any of the following provisions:
[    ]	Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
[    ]	Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
[    ]	Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR
	240.14d-2(b))
[    ]	Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR
	240.13e-4(c))
	____________________

Item 7.01     Regulation FD Disclosure 

            This report is filed quarterly to disclose assets under management by asset 

manager, prior to the availability of Principal Financial Group, Inc's (the "Company") 

quarterly earnings release. The amounts presented herein will be consistent with the 

format of assets under management by asset manager and presented again in such format 

within the Company's financial supplement for the quarter ended December 31, 2009 

when that document is posted to the Company's investor relations web site on or about 

February 8, 2010. 

            As of December 31, 2009, the assets under management by asset manager were 

$205.3 billion for Principal Global Investors and $31.3 billion for Principal International. 

                                                                SIGNATURE

            Pursuant to the requirements of the Securities Exchange Act of 1934, the 

registrant has duly caused this report to be signed on its behalf by the undersigned 

thereunto duly authorized. 

                                                                       PRINCIPAL FINANCIAL GROUP, INC. 

                                                                       By:          /s/ Thomas J. Graf                                    

                                                                       Name:  Thomas J. Graf 

                                                                       Title:     Senior Vice President – Investor 

                                                                                   Relations 

Date: January 22, 2010