6-K

SECURITIES AND EXCHANGE COMMISSIONWashington, D.C. 20549

FORM 6-K

Report of Foreign Issuer
Pursuant to Rule 13a-16 or 15d-16 of
the Securities Exchange Act of 1934

For the month of August 2009

Commission File Number: 001-15276

Itaú Unibanco Holding S.A.

(Exact name of registrant as specified in its charter)

Itaú Unibanco Holding S.A.

(Translation of Registrant’s Name Into English)

Praça Alfredo Egydio de Souza Aranha, 100-Torre Itaúsa
04344-902 São Paulo, SP, Brazil
(Address of principal executive offices)

Indicate by check mark whether the registrant files or will file annual reports under cover Form 20-F or Form 40-F.

Form 20-F:   ý      Form 40-F:   o

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T
Rule 101(b)(1):

Yes:   o      No:   ý

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T
Rule 101(b)(7):

Yes:   o      No:   ý

Indicate by check mark whether by furnishing the information contained in this Form, the registrant is also thereby furnishing information to the Commission pursuant to Rule 12g3-2(b) under the Securities Exchange Act of 1934.

Yes:   o      No:   ý

If “Yes” is marked, indicate below the file number assigned to the registrant in connection with Rule 12g3-2(b):
82-___________________.

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, thereunto duly authorized.

	Itaú Unibanco Holding S.A.               (Registrant)
Date:  August 24, 2009	By:	/s/ Alfredo Egydio Setubal
		Name:	Alfredo Egydio Setubal
		Title:	Investor Relations Officer

By:	/s/ Silvio Aparecido de Carvalho
	Name:	Silvio Aparecido de Carvalho
	Title:	Chief Financial Officer

EXHIBIT INDEX

99.1 Conference call re association between Itaú Unibanco Holding S.A. and Porto Seguro S.A.

EX-99.1

Conference Call – Alliance: Itaú Unibanco and Porto Seguro

Dear Ms(s).,

Itaú Unibanco Holding S.A. (BM&FBovespa: ITUB4 and ITUB3; NYSE: ITUB and BCBA: ITUB4) and Porto Seguro S.A. (BM&FBovespa: PSSA3) is pleased to invite you to participate in conference calls about the Association between Itaú Unibanco and Porto Seguro.

Presentation

ITAÚ UNIBANCO HOLDING S.A.	PORTO SEGURO S.A.
Roberto Setubal CEO Itaú Unibanco Holding S.A.	Jayme Brasil Garfinkel Chairman of the Board Porto Seguro S.A.
Alfredo Setubal Investor Relations Officer Itaú Unibanco Holding S.A.	José Tadeu Mota Chief Financial Officer and Chief Investor Relations Officer Porto Seguro S.A.

Conference Call in Portuguese	Conference Call in English
August 25, 2009 08:00 AM (ET) 9:00 AM (Brasília time) To take part in the conference call inform code Itaú Unibanco Porto Seguro (55 11) 4688-6361	August 25, 2009 9:00 AM (ET) 10:00 AM (Brasília time) To take part in the conference call inform code Itaú Unibanco Porto Seguro Toll-free from the US: (1-800) 860-2442 In Brazil: (55-11) 4688-6361 Other countries: (1-412) 858-4600

The live webcast will be available at www.itauunibancoir.com or http://www.portoseguro.com.br/investor-relations/home.html. The conference calls will also be archived in audio format on the website.

To access an audio replay of the conference calls, which will be available until August 31, 2009, dial (55 11) 4688-6312. Confirmation codes: 570 (call in Portuguese) and 295 (call in English).

The slide presentation will be available for viewing and downloading on Tuesday morning.

If you have any questions, please contact Ms. Daniela Ueda at FIRB-Financial Investor Relations Brazil, at +55 11 3897-6857 or daniela.ueda@firb.com.