Exhibit 99.1

GFI Group Inc. Announces Second Quarter 2013 Results; Declares Quarterly Cash Dividend

·                 GAAP Total Revenues: $242.3 Million; Non-GAAP Total Revenues: $241.1 Million

·                 GAAP Net Revenues: $198.4 Million; Non-GAAP Net Revenues: $197.3 Million

·                 Software, Analytics and Market Data revenues: $21.8 Million, up 6.5% year-over-year

·                 GAAP Net Income: $6.7 Million or $0.05 per Diluted Share

·                 Non-GAAP Net Income: $7.1 Million or $0.06 per Diluted Share

·                 Cash Earnings: $27.6 Million or $0.22 per Diluted Share

New York, July 25, 2013 — GFI Group Inc. (NYSE: GFIG), a leading provider of wholesale brokerage services, clearing services, and electronic execution and trading support products for global financial markets,  reported today its financial results for the second quarter ended June 30, 2013.

Highlights

·                  Non-GAAP net revenues increased 0.8% to $197.3 million in the second quarter of 2013, from $195.8 million in the second quarter of 2012.

·                  Brokerage revenues for the second quarter of 2013 declined 0.8% to $174.0 million, from $175.4 million in the second quarter of 2012.  Revenues from trading software, analytics and market data products for the second quarter of 2013 were $21.8 million, up 6.5% from $20.5 million in the second quarter of 2012.

·                  Compensation and employee benefits expense in the second quarter of 2013 was 68.2% of net revenues on a non-GAAP basis, as compared to 68.8% in the second quarter of 2012.

·                  Non-compensation expenses were 27.2% on a non-GAAP basis in the second quarter of 2013 compared with 28.9% in the second quarter of 2012.

·                  Net income for the second quarter of 2013 was $7.1 million, or $0.06 per diluted share, on a non-GAAP basis compared with $2.7 million or $0.02 per diluted share, in the second quarter of 2012.

·                  Cash earnings for the three month period ended June 30, 2013 were $27.6 million, or $0.22 per diluted share, compared with $22.8 million, or $0.19 per diluted share, for the same period in 2012.

·                  For the six months ended June 30, 2013, non-GAAP net revenues decreased 6.0% to $397.1 million, from $422.3 million in 2012.  Net income on a non-GAAP basis was $14.3 million, or $0.11 per diluted share, for the six months ended June 30, 2013, compared to $11.1 million, or $0.09 per diluted share, for the same period in 2012.

Colin Heffron, Chief Executive Officer commented: “GFI’s non-GAAP net revenues increased over the previous year for the first time since the fourth quarter of 2011 aided by heightened market volatility, strength in emerging markets and fixed income products, continued growth in non-brokerage revenues and increased activity on GFI’s hybrid-electronic trading platforms.  These growth areas offset weakness in equity and commodity product revenues.

“We remain focused on reducing GFI’s cost base and expect our cost initiatives to continue to improve GFI’s profitability in future periods.   We are on track to reach in excess of $60 million in total 2013 cost savings, as compared to 2011 expense levels.

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“Last week we filed our application with the Commodities Futures Trading Commission (“CFTC”) to become a multi-asset Swap Execution Facility (“SEF”) under the CFTC’s recently announced SEF rules.  Our commitment to technology innovation and investment enabled us to be one of the first to file for SEF designation with the CFTC.

“GFI’s preliminary July 2013 total revenues are tracking down approximately 5% compared with July last year.

“GFI’s cash earnings were $0.22 per diluted share or approximately $28 million in the second quarter of 2013.  We are pleased to declare a quarterly cash dividend to GFI shareholders of $0.05 per share.”

GAAP Results

GAAP net revenues were $198.4 million in the second quarter of 2013, compared with $202.8 million in the second quarter of 2012.  GAAP net income was $6.7 million, or $0.05 per diluted share, in the second quarter of 2013, compared with $5.3 million, or $0.04 per diluted share, in the second quarter of 2012.  Compensation and employee benefits expense in the second quarter of 2013 was 67.8% on a GAAP basis, as compared with 66.9% in the second quarter of 2012.  Non-compensation expenses, on a GAAP basis, for the second quarter of 2013 were $56.2 million, or 28.3% of net revenues, compared with $59.5 million, or 29.4% of net revenues, in the second quarter of 2012.

Revenues

Net revenues were $197.3 million on a non-GAAP basis in the second quarter of 2013, as compared with $195.8 million in the second quarter of 2012.

Brokerage revenues were $174.0 million compared with $175.4 million in the second quarter of 2012.  Revenues from fixed income and financial products were up 10.6% and 13.4%, respectively, compared with the second quarter of 2012, while equity and commodity product revenues were down 15.1% and 14.8%, respectively, over the same period.  By geographic region, brokerage revenues for the second quarter of 2013 increased 2.2% in the Americas and 7.7% in Asia-Pacific, while decreasing 5.3% in Europe, Middle East and Africa, as compared with the same quarter of 2012.

Revenues from trading software, analytics and market data products for the second quarter of 2013 were $21.8 million, up 6.5% from $20.5 million in the second quarter of 2012.

Expenses

For the second quarter of 2013, non-GAAP compensation and employee benefits expense was $134.6 million compared with $134.7 million in the second quarter of 2012.  Compensation and employee benefits expense was 68.2% of net revenues on a non-GAAP basis in the second quarter of 2013, compared with 68.8% of net revenues in the second quarter of 2012.   Non-compensation expenses, on a non-GAAP basis, for the second quarter of 2013 were $53.6 million, or 27.2% of net revenues, compared with $56.6 million, or 28.9% of net revenues, in the second quarter of 2012.

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Earnings

Non-GAAP net income for the second quarter of 2013 was $7.1 million, or $0.06 per diluted share, compared with $2.7 million, or $0.02 per diluted share, in the second quarter of 2012.

GFI’s effective non-GAAP tax rate for the first half of 2013 was 20.0% as compared to a full year rate of 11.9% for 2012.  The increase is primarily driven by a release of a tax liability in 2012, creating an unusually low rate for that year.

Six Month Results

GAAP net revenues were $399.9 million for the six months ended June 30, 2013, compared with $429.5 million for the same period 2012.   GAAP net income was $11.4 million, or $0.09 per diluted share, in the first half of 2013, compared with $10.1 million, or $0.08 per diluted share, in the prior year period.  Compensation and employee benefits expense in the first half of 2013 was 67.9% on a GAAP basis, in-line with the prior year results for the same period.  Non-compensation expenses, on a GAAP basis, for the six months ended June 30, 2013 were $120.6 million, or 30.2% of net revenues, compared with $122.7 million, or 28.6% of net revenues, in the first half of 2012.

On a non-GAAP basis, net revenues for the six months ended June 30, 2013 were $397.1 million, compared to $422.3 million for the same period in 2012.  Net income was $14.3 million on a non-GAAP basis, or $0.11 per diluted share, for the six months ended June 30, 2013, compared with net income of $11.1 million, or $0.09 per diluted share, for the same period in 2012.

Dividend Declaration

The Board of Directors of GFI has declared a quarterly cash dividend of $0.05 per share payable on August 30, 2013 to shareholders of record as of August 15, 2013.

Non-GAAP Financial Measures

To supplement GFI’s unaudited financial statements presented in accordance with GAAP, the Company uses certain non-GAAP measures of financial performance. The presentation of these non-GAAP financial measures is not intended to be considered in isolation from, as a substitute for, or superior to, the financial information prepared and presented in accordance with GAAP, and may be different from non-GAAP financial measures used by other companies.  In addition, these non-GAAP measures have limitations in that they do not reflect all of the amounts associated with the Company’s results of operations as determined in accordance with GAAP. The non-GAAP financial measures used by GFI include non-GAAP total revenues, non-GAAP net revenues, non-GAAP provision for or benefit from income taxes, non-GAAP net income, non-GAAP diluted earnings per share, cash earnings and cash earnings per share.  These non-GAAP financial measures currently exclude from the Company’s statement of income amortization of acquired intangibles and certain other items that management views as non-operating, non-recurring or non-cash as detailed in the reconciliation included in the financial tables attached to this release.

In addition, GFI may consider whether other significant non-operating, non-recurring or non-cash items that arise in the future should also be excluded in calculating the non-GAAP financial measures it uses.  The non-GAAP financial measures also take into account estimated adjustments to income tax expense with respect to the excluded items.

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GFI believes that these non-GAAP financial measures, when taken together with the corresponding GAAP financial measures, provide meaningful supplemental information regarding the Company’s performance by excluding certain items that may not be indicative of the Company’s core business, operating results or future outlook. GFI’s management uses, and believes that investors benefit from referring to, these non-GAAP financial measures in assessing the Company’s operating results, as well as when planning, forecasting and analyzing future periods. These non-GAAP financial measures also facilitate comparisons of the Company’s performance to prior periods.

In addition to the reasons stated above, which are generally applicable to each of the items GFI excludes from its non-GAAP financial measures, the Company believes it is appropriate to exclude amortization of acquired intangibles because when analyzing the operating performance of an acquired business, GFI’s management focuses on the total return provided by the investment (i.e., operating profit generated from the acquired entity, as compared to the purchase price paid) without taking into consideration any charges for allocations made for accounting purposes. Further, because the purchase price for an acquisition necessarily reflects the accounting value assigned to intangible assets, when analyzing the operating performance of an acquisition in subsequent periods, the Company’s management excludes the GAAP impact of acquired intangible assets on its financial results. GFI believes that such an approach is useful in understanding the long-term return provided by an acquisition and that investors benefit from a supplemental non-GAAP financial measure that excludes the accounting expense associated with acquired intangible assets.

A reconciliation of these non-GAAP financial measures to GAAP is included in the financial tables attached to this release.

Conference Call

GFI has scheduled an investor conference call to discuss its second quarter results at 8:30 a.m. (Eastern Time) on Friday, July 26, 2013. Those wishing to listen to the live conference call via telephone should dial 1-800-860-2442 in North America and +1-412-858-4600 outside of North America, and ask for “GFI”.

A live audio web cast of the conference call will be available on the Investor Relations section of GFI’s Website. For web cast registration information, please visit: http://www.gfigroup.com. Following the conference call, an archived recording will be available.

Supplementary Financial Information

GFI has posted details of its historical monthly brokerage revenues on the Investor Relations page of its web site under the heading Supplementary Financial Information. The Company currently plans to post this information quarterly in conjunction with its announcement of earnings, but does not undertake a responsibility to continue to provide or update such information.

About GFI Group Inc.

GFI Group Inc. (NYSE: “GFIG”) is a leading provider of wholesale brokerage services, clearing services, electronic execution and trading support products for global financial markets. GFI Group Inc. provides brokerage services, market data, trading platform and analytics software products to institutional clients in markets for a range of fixed income, financial, equity and commodity instruments.

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Headquartered in New York, GFI was founded in 1987 and employs more than 2,000 people with additional offices in London, Paris, Nyon, Hong Kong, Seoul, Singapore, Manila, Tokyo, Sydney, Cape Town, Santiago, Bogota, Buenos Aires, Lima, Mexico City, Dubai, Dublin, Tel Aviv, and Sugar Land (TX). GFI Group Inc. provides services and products to over 2,600 institutional clients, including leading investment and commercial banks, corporations, insurance companies and hedge funds. Its brands include GFISM, GFInet®, CreditMatch®, GFI ForexMatch®, EnergyMatch®, FENICS®, Starsupply®, Amerex®, Trayport® and Kyte®.

Forward-looking Statement

Certain matters discussed in this press release contain forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. When used in this press release, the words “anticipate,” “believe,” “estimate,” “may,” “might,” “intend,” “expect” and similar expressions identify such forward-looking statements. Actual results, performance or achievements could differ materially from those contemplated, expressed or implied by the forward-looking statements contained herein. These forward-looking statements are based largely on the expectations of GFI Group Inc. (the “Company”) and are subject to a number of risks and uncertainties. These include, but are not limited to, risks and uncertainties associated with: economic, political and market factors affecting trading volumes; securities prices or demand for the Company’s brokerage services; competition from current and new competitors; the Company’s ability to attract and retain key personnel, including highly-qualified brokerage personnel; the Company’s ability to identify and develop new products and markets; changes in laws and regulations governing the Company’s business and operations or permissible activities; the Company’s ability to manage its international operations; financial difficulties experienced by the Company’s customers or key participants in the markets in which the Company focuses its brokerage services; the Company’s ability to keep up with technological changes; uncertainties relating to litigation and the Company’s ability to assess and integrate acquisition prospects. Further information about factors that could affect the Company’s financial and other results is included in the Company’s filings with the Securities and Exchange Commission. The Company does not undertake to publicly update or revise any forward-looking statements, whether as a result of new information, future events or otherwise.

Investor Relations Contacts:

Christopher Giancarlo

Executive Vice President

investorinfo@gfigroup.com

Chris Ann Casaburri Grimmett

Investor Relations Manager

212-968-4167

chris.grimmett@gfigroup.com

Media Contact:

Patricia Gutierrez

Vice President - Public Relations

212-968-2964

patricia.gutierrez@gfigroup.com

- FINANCIAL TABLES FOLLOW -

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GFI Group Inc. and Subsidiaries

Consolidated Statements of Operations (unaudited)

(In thousands except share and per share data)

GFI Group Inc. and Subsidiaries

Consolidated Statements of Operations (unaudited)

As a Percentage of Net Revenues

GFI Group Inc. and Subsidiaries

Selected Financial Data (unaudited)

(Dollars in thousands except per share data)

(1)                                 Total assets include receivables from brokers, dealers and clearing organizations of $722.3 million and $252.7 million at June 30, 2013 and December 31, 2012, respectively. These receivables primarily represent securities transactions entered into in connection with our matched principal business which have not settled as of their stated settlement dates, as well as balances with clearing organizations. These receivables are substantially offset by corresponding payables to brokers, dealers and clearing organizations and to clearing customers, for these unsettled transactions.

(2)                                 Brokerage personnel headcount includes brokers, traders, trainees and clerks.

(3)                                 Broker productivity is calculated as brokerage revenues divided by average monthly brokerage personnel headcount for the quarter.

GFI Group Inc. and Subsidiaries

Reconciliation of GAAP to Non-GAAP Financial Measures (unaudited)

(In thousands except share and per share data)

GFI Group Inc.

Adjusted EBITDA