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 August 2015

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 of 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:  August 4, 2015	By:	/s/ Marcelo Kopel
		Name:	Marcelo Kopel
		Title:	Investor Relations Officer

By:	/s/ Eduardo Mazzilli de Vassimon
	Name:	Eduardo Mazzilli de Vassimon
	Title:	Chief Financial Officer

 

EXHIBIT INDEX

99.1 Announcement to the Market – Disclosure of Results for the Second Quarter and First Half of 2015, According to International Financial Reporting Standards – IFRS

EX-99.1

Announcement to the Market

Disclosure of results for the second quarter and first half of 2015, 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. We emphasize that the main difference in the result and equity relates to the allowance for loan losses, that uses the concept of incurred loss in IFRS and of expected loss in BRGAAP.

The complete consolidated financial statements under IFRS for the first half of 2015 are available at our website: www.itau.com.br/investor-relations.

Comparison between BRGAAP1 and IFRS R$ million

Balance Sheet	BRGAAP			Adjustments and Reclassifications2			IFRS			BRGAAP			Adjustments and Reclassifications2			IFRS
	Jun/30/2015									Dec/31/2014
Total Assets		1,230,510			(96,613	)		1,133,898			1,208,702			(81,499	)		1,127,203
Cash and Cash Equivalents, Reserve Requirements, Interbank Deposits, Securities Under Repurchase Agreements, Financial Assets and Derivatives 3		605,374			(24,997	)		580,377			610,142			(36,883	)		573,259
Loan Operations		457,463			540			458,003			451,760			671			452,431
(-) Allowance for Loan Losses 4		(28,131	)		4,034			(24,097	)		(26,948	)		4,556			(22,392	)
Other Financial Assets 5		114,122			(66,654	)		47,469			96,761			(43,112	)		53,649
Tax Assets 6		45,257			(7,026	)		38,231			42,890			(7,647	)		35,243
Investments in associates and jointly controlled entities, Goodwill, Fixed and Intangible Assets, Assets Held for Sale and Other Assets		36,425			(2,509	)		33,915			34,097			916			35,013
Current Liabilities and Long Term Liabilities		1,128,029			(99,866	)		1,028,163			1,110,439			(83,853	)		1,026,586
Deposits		280,443			-			280,443			294,773			-			294,773
Deposits Received Under Securities Repurchase Agreements 3		305,300			(24,641	)		280,659			325,013			(36,330	)		288,683
Financial Liabilities Held for Trading, Derivatives, Interbank and Institutional funding		233,179			(109	)		233,069			212,826			872			213,698
Other Financial Liabilities 5		126,926			(66,485	)		60,441			114,540			(43,048	)		71,492
Reserves for Insurance, Private Pension and Capitalization		121,652			164			121,816			112,675			113			112,788
Provisions and Other Liabilities		51,916			(3,835	)		48,081			40,765			(78	)		40,687
Tax Liabilities 6		8,613			(4,959	)		3,654			9,847			(5,382	)		4,465
Total Stockholders’ Equity		102,481			3,253			105,735			98,263			2,354			100,617
Non-controlling interests		1,770			5			1,776			2,415			(1,058	)		1,357
Controlling Stockholders’ Equity 7		100,711			3,248			103,959			95,848			3,412			99,260

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

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

3Resulted 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;

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

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

7Conciliation of Controlling Stockholders’ Equity is presented in the following table.

Itaú Unibanco Holding S.A.

Below, the conciliation of the Result and Equity, and the conceptual description of the major adjustments.

Conciliation	R$ million
Adjustments	Equity			Result
	Jun/30/15			2ndQ/15			1stQ/15			2ndQ/14			1stH/15			1stH/14
BRGAAP – Values Attributable to Controlling Stockholders		100,711			5,984			5,733			4,899			11,717			9,318
(a) Allowance for Loan Losses		2,436			(153	)		(154	)		(125	)		(307	)		(69	)
(b) Adjustment to market value of shares and quotas		88			-			-			-			-			-
(c) Acquisition of interest in Porto Seguro Itaú Unibanco Participações S.A.		470			(3	)		(4	)		(3	)		(7	)		(7	)
(d) Effective interest rate		(115	)		(3	)		21			16			18			27
(e) Other adjustments		368			20			76			(21	)		97			48
IFRS – Values Attributable to Controlling Stockholders		103,959			5,845			5,673			4,766			11,518			9,317
IFRS – Values Attributable to Minority Stockholders		1,776			89			110			77			199			127
IFRS – Values Attributable to Controlling Stockholders and Minority Stockholders		105,735			5,934			5,783			4,843			11,717			9,444

Differences between IFRS and BRGAAP Financial Statements

(a) On IFRS (IAS 39), loan losses allowances must be made when there is objective evidence that loan operations have suffered a reduction in its value (Incurred Loss). On BRGAAP, the expected loss model is used 8.

(b) 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.

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

(d) 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. On BRGAAP, the recognition of expenses and revenues from fees occurs at the time of contracting these operations.

(e) Other Adjustments mainly comprise the difference in the eligibility of operations of the Cash Flow Hedge for purposes of IFRS and the reversal of the Goodwill Amortizations pursuant the BRGAAP.

8 For more details see our Complete Financial Statements for the first half of 2015.  

For comparison purposes, we present on the table below the Result and the Recurring Result according to the IFRS and the BRGAAP.

Recurring Result R$ million

	2ndQ/15						1stQ/15							1stH/15							1stH/14
	BRGAAP		IFRS		Variation		BRGAAP			IFRS		Variation		BRGAAP			IFRS		Variation		BRGAAP			IFRS		Variation
Result - Attributable to Controlling Stockholders	5,984		5,845		(139	)		5,733		5,673		(60	)		11,717		11,518		(199	)		9,318		9,317		(1	)
Exclusion of the Non-Recurring Events	150		115		(35	)		75		51		(24	)		225		167		(59	)		184		99		(85	)
Realization of Assets and Impairment	43		43		-			-		-		-			43		43		-			-		-		-
Goodwill Amortization	35		-		(35	)		60		37		(24	)		95		37		(59	)		85		-		(85	)
Program for the Settlement or Installment Payment of Taxes	(14	)	(14	)	-			(27	)	(27	)	-			(41	)	(41	)	-			-		-		-
Provision for Contingencies	86		86		-			42		42		-			128		128		-			73		73		-
Civil Lawsuits – Economic Plans	41		41		-			42		42		-			83		83		-			73		73		-
Tax and Pension	46		46		-			-		-		-			46		46		-			-		-		-
COFINS/Provisions for loan losses on tax loss – Porto Seguro	-		-		-			-		-		-			-		-		-			60		60		-
Favorable Decision on thesis enlargement of PIS/COFINS calculation basis IRB	-		-		-			-		-		-			-		-		-			(33	)	(33	)	-
Recurring Result - Attributable to Controlling Stockholders	6,134		5,961		(174	)		5,808		5,724		(84	)		11,942		11,685		(258	)		9,502		9,416		(86	)

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

São Paulo, August 4, 2015.

Marcelo Kopel

Investor Relations Officer

Itaú Unibanco Holding S.A.