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FORM 6-K

U.S. SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Report of Foreign Private Issuer

Pursuant to Rule 13a-16 or 15d-16 of

the Securities Exchange Act of 1934

Commission File Number: 1-15270

For the month of July 2015

NOMURA HOLDINGS, INC.

(Translation of registrant’s name into English)

9-1, Nihonbashi 1-chome

Chuo-ku, Tokyo 103-8645

Japan

(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              

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):             

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):             

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Information furnished on this form:

EXHIBIT

The registrant hereby incorporates Exhibit 1 to this report on Form 6-K by reference in the prospectus that is part of Registration Statement on Form F-3 (Registration No. 333-191250) of the registrant and Nomura America Finance, LLC, filed with the Securities and Exchange Commission on September 19, 2013.

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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.

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Financial Summary For the Three Months Ended June 30, 2015 (U.S. GAAP)

1. Consolidated Operating Results

(1) Operating Results

Note: Return on shareholders’ equity is a ratio of Net income attributable to NHI shareholders to Total NHI shareholders’ equity.

(2) Financial Position

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2. Cash Dividends

Note: Nomura plans to forgo dividend distribution for Q3 of fiscal year 2016. Fiscal year 2016 Q2 and Q4 dividend amount are not presented per reasons stated in “3. Earnings forecasts for the year ending March 31, 2016”.

3. Earnings Forecasts for the year ending March 31, 2016

Nomura provides investment, financing and related services in the capital markets on a global basis. In the global capital markets there exist uncertainties due to, but not limited to, economic and market conditions. Nomura, therefore, does not present earnings forecasts.

Notes

(1) Changes in significant subsidiaries during the period: None

      (Changes in Specified Subsidiaries accompanying changes in scope of consolidation.)

(2) Adoption of the simplified and particular accounting treatments: None

(3) Changes in accounting policies

(4) Number of shares issued (common stock)

*Quarterly review

The review process of the quarterly consolidated financial statements for this period has not been completed by the external auditors at the point of disclosing this financial summary. As a result of such review, certain of the information set forth herein could be subject to revision, possibly material, in the quarterly securities report for the period ended June 30, 2015, an English translation of which the registrant plans to furnish on Form 6-K in due course.

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U.S. GAAP

Note: Return on shareholders’ equity is a ratio of Net income (loss) attributable to NHI shareholders to Total NHI shareholders’ equity.

Nomura Holdings, Inc. and its consolidated entities (collectively, “Nomura”) reported net revenue of 424.0 billion yen for the three months ended June 30, 2015, an increase of 14.3% from the same period in the prior year. Non-interest expenses decreased by 0.4% from the same period in the prior year to 318.0 billion yen. Income before income taxes was 106.0 billion yen and net income attributable to NHI shareholders was 68.7 billion yen for the three months ended June 30, 2015.

Segments Information

In the above segment information totals, which exclude unrealized gain (loss) on investments in equity securities held for operating purposes, net revenue for the three months ended June 30, 2015 was 415.0 billion yen, an increase of 13.0% from the same period in the prior year. Non-interest expenses decreased by 0.4% from the same period in the prior year to 318.0 billion yen. Income before income taxes was 97.0 billion yen for the three months ended June 30, 2015. Please refer to page 10 for further details of the differences between U.S. GAAP and business segment amounts.

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<Business Segment Results>

Operating Results of Retail

Net revenue increased by 22.3% from the same period in the prior year to 130.7 billion yen, primarily due to increases in commissions from distribution of investment trusts and brokerage. Non-interest expense increased by 6.0% to 79.8 billion yen. As a result, income before income taxes increased by 61.0% to 50.9 billion yen.

Operating Results of Asset Management

Net revenue increased by 15.3% from the same period in the prior year to 26.9 billion yen. Non-interest expense increased by 0.7% to 15.2 billion yen. As a result, income before income taxes increased by 42.0% to 11.7 billion yen. Assets under management were 41.4 trillion yen as of June 30, 2015.

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Operating Results of Wholesale

Net revenue increased by 8.6% from the same period in the prior year to 205.2 billion yen. Non-interest expense increased by 1.3% to 185.5 billion yen. As a result, income before income taxes increased by 242.6% from the same period in the prior year to 19.7 billion yen.

Other Operating Results

Net revenue was 52.2 billion yen. Income before income taxes was 14.7 billion yen.

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Total assets as of June 30, 2015 were 44.0 trillion yen, an increase of 2,213.2 billion yen compared to March 31, 2015, mainly due to the increase in Trading assets. Total liabilities as of June 30, 2015 were 41.2 trillion yen, an increase of 2,141.2 billion yen compared to March 31, 2015, mainly due to the increase in Securities sold under agreements to repurchase. Total equity as of June 30, 2015 was 2.8 trillion yen, an increase of 72.0 billion yen compared to March 31, 2015.

Nomura provides investment, financing and related services in the capital markets on a global basis. In the global capital markets there exist uncertainties due to, but not limited to, economic and market conditions. Nomura, therefore, does not present earnings and dividend forecasts.

The quarterly consolidated financial information herein has been prepared in accordance with Nomura’s accounting policies which are disclosed in the notes to the consolidated financial statements of Nomura Holdings, Inc.’s Annual Securities Report (the annual report filed in Japan on June 25, 2015) and Form 20-F (the annual report filed with the U.S. Securities and Exchange Commission on June 25, 2015) for the year ended March 31, 2015.

The review process of the quarterly consolidated financial statements for this period has not been completed by the external auditors.

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Not applicable.

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The following table shows business segment information and reconciliation items to the consolidated statements of income.