Exhibit 99.1

GFI Group Inc. Announces Second Quarter 2012 Results;

Declares Quarterly Cash Dividend

·                  GAAP Total Revenues: $237.7 Million; Non-GAAP Total Revenues: $230.7 Million

·                  GAAP Net Revenues: $202.8 Million; Non-GAAP Net Revenues: $195.8 Million

·                  GAAP Net Income: $5.3 Million or $0.04 per Diluted Share

·                  Non-GAAP Net Income: $2.7 Million or $0.02 per Diluted Share

·                  Cash Earnings: $22.8 Million or $0.19 per Diluted Share

·                  Quarterly Cash Dividend Declared of $0.05 per Share

New York,  July 26, 2012 — GFI Group Inc. (NYSE: GFIG), a leading provider of wholesale brokerage services, clearing services, electronic execution and trading support products for global financial markets, reported today its financial results for the second quarter ended June 30, 2012.

Highlights

·                  GAAP net revenues were $202.8 million for the second quarter of 2012, a decrease of 3.6% from $210.3 million in the second quarter of 2011.  On a non-GAAP basis, net revenues decreased 7.6% to $195.8 million in the second quarter of 2012, from $212.0 million in the second quarter of 2011.

·                  Brokerage revenues for the second quarter of 2012 declined 8.2% to $175.4 million compared with $191.0 million in the second quarter of 2011.

·                  Revenues from trading software, analytics and market data products for the second quarter of 2012 were $20.5 million, up 11.2% from the second quarter of 2011.

·                  Compensation and employee benefits expense in the second quarter of 2012 was 66.9% and 68.8% of net revenues on a GAAP and non-GAAP basis, respectively. This compares with 69.8% and 69.3% of net revenues on a GAAP and non-GAAP basis, respectively, in the second quarter of 2011.

·                  Non-compensation expenses were 29.4% of net revenues on a GAAP basis and 28.9% on a non-GAAP basis in the second quarter of 2012.  This compares with 26.4% of net revenues on a GAAP basis and 25.2% on a non-GAAP basis in the second quarter of 2011.

·                  Net income for the second quarter of 2012 was $5.3 million on a GAAP basis, or $0.04 per diluted share, compared with $6.2 million, or $0.05 per diluted share, in the second quarter of 2011.  On a non-GAAP basis, net income was $2.7 million, or $0.02 per diluted share, for the second quarter of 2012, compared with $8.7 million, or $0.07 per diluted share, in the second quarter of 2011.

·                  Cash earnings for the three month period ended June 30, 2012 were $22.8 million, or $0.19 per diluted share, compared with $28.8 million, or $0.23 per diluted share, for the same period in 2011.

·                  For the six months ended June 30, 2012, GAAP net revenues were $429.5 million, down 1.9%, compared with $437.7 million for the same period in 2011.  Net income on a GAAP basis for the first half of 2012 was $10.1 million, or $0.08 per diluted share, compared to $12.9 million, or $0.10 per diluted share, in the first half of 2011.  On a non-GAAP basis, net revenues for the six months ended June 30, 2012 were $422.3 million, down 5.4%, compared with $446.5 million in the same period in 2011, while net income for the first half of 2012 was $11.1 million, or $0.09 per diluted share, compared with $22.4 million, or $0.18 per diluted share, in 2011.

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Michael Gooch, Chairman and Chief Executive Officer of GFI, commented: “Trading volumes remained very subdued across asset classes and regions due to the sluggish global economy, regulatory, political and market uncertainty and the ongoing European sovereign debt crisis.  Despite the slow trading environment and lower brokerage revenues, an increasing amount of our brokerage activities were supported by proprietary electronic trading capabilities.  GFI’s subscription-based software, analytics and market data revenues continued to outpace prior year results with Trayport’s software revenues for the first half of 2012 up 20.8% over the same period in 2011.

“We remain focused on cautiously expanding GFI’s geographic, product and technology footprint and building profitable and technology enhanced businesses. We announced earlier this week a joint venture initiative in China with Thompson Reuters and SDIC Trust Co., Ltd, and plan on opening new offices in Latin America in the coming months.

“We continue to reduce GFI’s cost structure in response to market conditions as GFI’s non-GAAP compensation expense declined as a percentage of net revenue.  However, the combination of lower brokerage revenues and additional interest expense from GFI’s debt offering in July of 2011 offset the reduction in compensation expense, as non-compensation expense increased by $3.1 million on a non-GAAP basis.  Our cost reduction efforts yielded $11 million in cost savings in the first half of 2012 and we expect to save an additional $15 million in the second half of 2012 for a total of $26 million in 2012.  Moreover, we have set a goal of achieving an additional $24 million in cost savings in 2013.

“Looking at July activity to date, preliminary total revenues are tracking down approximately 9% compared with total revenues for the same month last year.  We believe that GFI’s July performance is in line with the lower volumes and revenues reported in the broader over-the-counter and exchange markets.

Mr. Gooch concluded:  “We are pleased to declare a quarterly cash dividend of $0.05 per share to GFI shareholders.”

Revenues

Net revenues were $202.8 million and $195.8 million on a GAAP and non-GAAP basis, respectively, in the second quarter of 2012, as compared with $210.3 million and $212.0 million on a GAAP and non-GAAP basis, respectively, in the second quarter of 2011. Non-GAAP net revenues in the second quarter of 2012 excluded a $1.6 million mark-to-market gain on forward hedges of future foreign currency revenues, a $5.2 million mark-to-market gain on a future purchase commitment, and a $0.2 million mark-to-market gain on equity warrants held.

Brokerage revenues in the second quarter of 2012 were $175.4 million compared with $191.0 million in the second quarter of 2011. Revenues from commodity products increased 6.6%, and fixed income, equity and financial product revenues were down 17.4%, 17.1% and 3.3%, respectively, compared with the second quarter of 2011.  By geographic region, brokerage revenues for the second quarter of 2012 declined 9.4% in EMEA, 10.6% in Asia-Pacific and 5.9% in the Americas, as compared with the same quarter of 2011.

Revenues from trading software, analytics and market data products for the second quarter of 2012 were $20.5 million, up 11.2% from the second quarter of 2011.

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Expenses

For the second quarter of 2012, compensation and employee benefits expense was $135.7 million on a GAAP basis and $134.7 million on a non-GAAP basis. This compares with $146.8 million on a GAAP and non-GAAP basis in the second quarter of 2011.  Compensation and employee benefits expense was 66.9% and 68.8% of net revenues on a GAAP and non-GAAP basis, respectively, in the second quarter of 2012 compared with 69.8% and 69.3% of net revenues on a GAAP and non-GAAP basis, respectively, in the second quarter of 2011.

On a GAAP basis, non-compensation expenses for the second quarter of 2012 were $59.5 million, or 29.4% of net revenues, compared with $55.6 million, or 26.4% of net revenues, in the second quarter of 2011.  On a non-GAAP basis, non-compensation expenses for the second quarter of 2012 were $56.6 million, or 28.9% of net revenues, compared with $53.5 million, or 25.2% of net revenues, in the second quarter of 2011.  The higher non-compensation expenses year over year were primarily due to increased interest expenses relating to GFI’s $250 million senior note offering completed in July of 2011.

The effective tax rate for the first six months of 2012 was 33.0% on a GAAP basis, and 36.0% on a non-GAAP basis, as compared with 26.0% and 28.5% on a GAAP and non-GAAP basis, respectively, in the first six months of 2011.  For calendar year 2011, GFI’s effective tax rate was 39.0% on a non-GAAP basis.

Earnings

Net income on a GAAP basis for the second quarter of 2012 was $5.3 million, or $0.04 per diluted share, compared with net income of $6.2 million, or $0.05 per diluted share, in the second quarter of 2011.  On a non-GAAP basis, net income for the second quarter of 2012 was $2.7 million, or $0.02 per diluted share, compared with $8.7 million, or $0.07 per diluted share, for the second quarter of 2011.

Six Month Results

Net revenues for the six months ended June 30, 2012 were $429.5 million on a GAAP basis, compared to net revenues of $437.7 million for the six months ended June 30, 2011.  Net income was $10.1 million on a GAAP basis, or $0.08 per diluted share, for the six months ended June 30, 2012 compared with net income of $12.9 million, or $0.10 per diluted share, for the same period in 2011.  On a non-GAAP basis, net revenues for the six months ended June 30, 2012 were $422.3 million compared to $446.5 million for the same period in 2011.  Non-GAAP net income was $11.1 million, or $0.09 per diluted share, for the six months ended June 30, 2012 compared with net income of $22.4 million, or $0.18 per diluted share, for the first six months of 2011.

Dividend Declaration

The Board of Directors of GFI has declared a quarterly cash dividend of $0.05 per share payable on August 31, 2012 to shareholders of record as of August 17, 2012.

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 net

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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.

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 27, 2012. 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.

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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.

Headquartered in New York, GFI was founded in 1987 and employs more than 2,100 people with additional offices in London, Paris, Nyon, Hong Kong, Seoul, Singapore, Sydney, Cape Town, Santiago, Bogota, Buenos Aires, Dubai, Dublin, Tel Aviv, Los Angeles 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.

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Investor Relations Contacts:

Christopher Giancarlo

Executive Vice President

investorinfo@gfigroup.com

Chris Ann Casaburri

Investor Relations Manager

212-968-4167

chris.casaburri@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)

(1)                                  In the Company’s earnings release for the first quarter of 2012, the Company reported cash held at clearing organizations, net of customer cash as $60.0 million. This amount was determined not to be correct after revising certain estimates. At March 31, 2012, the Company’s revised estimate of cash held at clearing organizations, net of customer cash was $50.9 million.

(2)                                  Total assets include receivables from brokers, dealers and clearing organizations of $713.7 million and $217.9 million at June 30, 2012 and December 31, 2011, 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, as well as to clearing customers, for these unsettled transactions.

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

(4)                                  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