6-K

SECURITIES AND EXCHANGE COMMISSION

Washington, 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 October 2012

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:  x      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:   x

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:   x

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:   x

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:  October 30, 2012	By:	/s/ Alfredo Egydio Setubal
		Name:	Alfredo Egydio Setubal
		Title:	Investor Relations Officer

By:	/s/ Caio Ibrahim David
	Name:	Caio Ibrahim David
	Title:	Chief Financial Officer

 

EXHIBIT INDEX

99.1 Announcement to the Market – Disclosure of results for the third quarter and from January to September of 2012, according to IFRS

EX-99.1

Announcement to the Market

Disclosure of results for the third quarter and from January to September of 2012,
according to International Financial Reporting Standards – IFRS

We present below the differences between our financial statements in BRGAAP1 and in International Financial Reporting Standards - IFRS.

The complete consolidated financial statements under IFRS from January to September of 2012 are available at our website: www.itau-unibanco.com/ir.

Comparison between BRGAAP1 and IFRS R$ million

Balance Sheet	BRGAAP			Adjustments and Reclassifications2			IFRS			BRGAAP			Adjustments and Reclassifications2			IFRS
	Sep/30/2012									Dec/31/2011
Total Assets		960,216			(81,378	)		878,838			851,331			(33,195	)		818,136
Cash and Cash Equivalents, Reserve Requirements, Interbank Deposits, Securities Under Repurchase Agreements, Financial Assets and Derivatives3		476,037			(25,547	)		410,982			412,648			(2,414	)		410,234
Loan Operations		359,810			817			357,692			345,483			781			346,264
(-) Allowance for Loan Losses 4		(27,682	)		1,919			(25,212	)		(25,772	)		1,899			(23,873	)
Other Financial Assets 5		81,637			(40,972	)		41,266			66,502			(26,248	)		40,254
Tax Assets 6,7		35,214			(3,968	)		27,456			32,409			(6,321	)		26,088
Investments in non consolidated Companies, Fixed and Intangible Assets, Assets Held for Sale and Other Assets7		35,200			(13,627	)		20,899			20,061			(892	)		19,169
Current Liabilities and Long Term Liabilities		880,116			(76,212	)		754,189			778,243			(35,443	)		742,800
Deposits		231,919			-			234,975			242,636			-			242,636
Deposits Received Under Securities Repurchase Agreements 3		245,272			(25,860	)		183,747			188,819			(3,406	)		185,413
Financial Liabilities Held for Trading, Derivatives, Interbank and Institutional funding		171,622			1,018			163,033			153,941			926			154,867
Other Financial Liabilities 5		85,960			(40,950	)		45,247			70,681			(26,562	)		44,119
Reserves for Insurance, Private Pension and Capitalization		87,281			-			82,553			73,754			(12	)		73,742
Provisions and Other Liabilities		44,166			(3,604	)		38,535			34,661			(46	)		34,615
Tax Liabilities 6		13,896			(6,816	)		6,099			13,751			(6,343	)		7,408
Total Stockholders’ Equity		80,100			(5,166	)		78,894			73,088			2,248			75,336
Non-controlling interests		1,121			(797	)		1,019			1,741			(346	)		1,395
Controlling Stockholders’ Equity8		78,979			(4,369	)		77,875			71,347			2,594			73,941

1BRGAAP represents the accounting practices adopted in Brazil for financial institutions, according to regulation of the Brazilian Central Bank;

2 Resulted from reclassifications between assets and liabilities and other effects from IFRS adoption;

3 Resulted from the elimination of transactions between the parent company and exclusive funds (mainly PGBL and VGBL fund quotas), which are consolidated under IFRS;

4Implementation of the criteria for calculating the Allowance for Loan Losses as defined in IFRS model;

5Difference in accounting, mainly for Foreign Exchange Portfolio, which started to be considered as a net effect of Assets and Liabilities;

6 Difference in accounting, mainly for deferred taxes, which are now treated as a net effect of Assets and Liabilities in each of the consolidated companies.

7 Resulted from the difference in accounting of the effect of the acquisition of interest from non-controlling stockholders’ of Redecard S.A., which was recognized in assets in BRGAAP and recognized in stockholders’ equity in IFRS.

8 Reconciliation of Controlling Stockholders’ Equity is presented in the following table.

Below, the reconciliation of net income and equity, and the conceptual description of the major adjustments.

Reconciliation R$million

Adjustments	Equity			Net Income
	Set/30/12			3rd Q/12			2nd Q/12			3rd Q/11			Jan-Sep/12			Jan-Sep/11
BRGAAP - Values Attributable to Controlling Stockholders		78,979			3,372			3,304			3,807			10,102			10,940
(a) Allowance for Loan Losses		1,920			76			(23	)		119			21			(29	)
(b) Recognition of total deferred tax assets		549			(187	)		(123	)		(195	)		(452	)		(465	)
(c) Adjustment to market value of shares and quotas		428			(1	)		2			3			(5	)		3
(d) Acquisition of interest in Porto Seguro Itaú Unibanco Participações S.A.		838			(7	)		(9	)		(9	)		(25	)		(26	)
(e) Conversion of subsidiaries and unconsolidated companies abroad		-			26			(54	)		(140	)		1			(165	)
(f) Effective interest rate		(564	)		58			65			(218	)		159			(224	)
(g) Acquisition of interest from non-controlling stockholders of Redecard S.A.		(9,979	)		-			-			-			-			-
Other adjustments		139			36			(28	)		1			(18	)		72
Income tax and social contribution on Net Income		(2,300	)		(66	)		(13	)		23			(69	)		80
IFRS - Values Attributable to Controlling Stockholders		74,610			3,309			3,121			3,391			9,715			10,186
IFRS - Values Attributable to Minority Stockholders		324			144			207			199			545			537
IFRS - Values Attributable to Controlling Stockholders and Minority Stockholders		74,934			3,453			3,328			3,590			10,260			10,723

Differences between IFRS and BRGAAP Financial Statements

(a) On IFRS(IAS39), loan losses allowances must be made when there is objective evidence that loan operations have suffered a reduction in its value (impairment).On BRGAAP, the expected loss model is used.9

(b) Recognition in the consolidated financial statements on BRGAAP of the tax credit related to the Social Contribution on Net Income at the rate of 15% (IAS 12), fully incorporated in the opening balance sheet of 01/01/2010 under IFRS.

(c) On IFRS (IAS 39 and 32), stocks and quotas classified as permanents investments were measured at fair value and its gains and losses were recorded directly on Equity, with no impact on the income statement of the period.

(d) On IFRS, the effect of accounting at fair value the acquisition of the participation in Porto Seguro Itaú Unibanco Participações S.A. was recognized.

(e) On the IFRS (IAS 21), exchange rate variations of subsidiaries and non consolidated companies abroad, where the functional currency (defined as the currency of the primary economic environment on which each entity operates) differs from the Real, started to be recorded directly on Equity with no impact on the income statement of the period.

(f) On the IFRS (IAS 39), the assets and financial liabilities measured at amortized cost are recognized according to the methodology of effective interest rate, which appropriates the revenues and costs directly attributed to the acquisition, issue or disposal for the period of operation. In the second half of 2011, we improved the methodology for the recognition of expenses associated with the process of credit granting as well as with the realization period of revenues from registration fees. On the BRGAAP, the recognition of expenses and revenues from fees occurs at the time of contracting these operations.

(g) On IFRS (IAS 27), changes in a parent’s ownership interest in a subsidiary that do not alter control of company are accounted for as equity transactions and should be recognized directly in stockholders’ equity.  On BRGAAP, difference between the acquisition price and book value of shares acquired from minority stockholders’ of Redecard SA was recognized as goodwill in assets.

9For more details see our Complete Financial Statements from January to September of 2012.

For comparison purposes, we present on the table below the net income and the recurring net income according to the IFRS and the BRGAAP.

R$ million

Recurring Net Income	3rd Q/12							Jan-Sep/12
	BRGAAP		IFRS		Variation			BRGAAP		IFRS		Variation
Net Income - Attributable to Controlling Stockholders		3,372		3,309		(63	)		10,102		9,715		(387	)
Exclusion of the Non-Recurring Events10		40		36		(4	)		439		398		(41	)
Total interest Sale of the Banco Português de Investimento		-		-		-			205		186		(19	)
Market Value Adjustment – BPI		-		-		-			101		92		(9	)
Provision for Contingencies – Economic Plans		40		36		(4	)		134		121		(13	)
Recurring Net Income - Attributable to Controlling Stockholders		3,412		3,345		(67	)		10,541		10,113		(428	)

10 The difference between BRGAAP and IFRS results from the fact that, on IFRS, the Social Contribution on Net Income (CSLL) is not compensated by the tax credits generated by the increase in the CSLL rate from 9% to the current 15%.

The tables in this report show the figures in millions. Variations and summations, however, are calculated in units.

São Paulo, October 29, 2012.

Alfredo Egydio Setubal

Investor Relations Officer