8-K

UNITED STATES

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 (Date of earliest event reported):  December 29, 2008

MORNINGSTAR, INC.

(Exact name of registrant as specified in its charter)

Illinois	000-51280	36-3297908
(State or other jurisdiction of incorporation)	(Commission File Number)	(I.R.S. Employer Identification No.)

225 West Wacker Drive
Chicago, Illinois
(Address of principal executive offices) 60606 (Zip Code)

(312) 696-6000

(Registrant’s telephone number, including area code)

N/A

(Former name or former address, if changed since last report)

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:

o    Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

o    Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

oPre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

oPre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Item 8.01.  Other Events.

On December 29, 2008, Morningstar, Inc., an Illinois corporation, issued a press release announcing that it had completed its previously announced acquisition of the business operations of InvestData (Proprietary) Limited, a leading provider of fund information in South Africa, a copy of which is filed as Exhibit 99.1.

Item 9.01.  Financial Statements and Exhibits.

Include the following information:

(d)           Exhibits:

Exhibit No.	Description
99.1	Press Release issued December 29, 2008.

2

SIGNATURES

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 hereunto duly authorized.

		MORNINGSTAR, INC.
Date:	December 29, 2008	By:	/s/ Scott Cooley
		Name:	Scott Cooley
		Title:	Chief Financial Officer

3

EXHIBIT INDEX

Exhibit No.	Description
99.1	Press Release issued December 29, 2008.

4

EX-99.1

Exhibit 99.1

	News Release
	225 West Wacker Drive	Telephone: +1 312 696-6000
	Chicago	Facsimile:  +1 312 696-6009
	Illinois 60606

Contact:

Media: Margaret Kirch Cohen, 312-696-6383, margaret.cohen@morningstar.com or Shawn Malayter, 312-696-6050, shawn.malayter@morningstar.com

FOR IMMEDIATE RELEASE

Morningstar, Inc. Completes Acquisition of InvestData (Proprietary) Limited

CHICAGO, Dec. 29, 2008—Morningstar, Inc. (NASDAQ: MORN), a leading provider of independent investment research, today announced it has completed its previously announced acquisition of the business operations of InvestData (Proprietary) Limited, a leading provider of fund information in South Africa. Terms were not disclosed.

About Morningstar, Inc.
Morningstar, Inc. is a leading provider of independent investment research in the United States and in major international markets. The company offers an extensive line of Internet, software, and print-based products and services for individuals, financial advisors, and institutions. Morningstar provides data on more than 290,000 investment offerings, including stocks, mutual funds, and similar vehicles. The company has operations in 19 countries and minority ownership positions in companies based in three other countries.

###

© 2008 Morningstar, Inc. All rights reserved.