Princeton, NJ, – May 4, 2012 – Miami International Securities Exchange, LLC (“MIAX”) announces the expansion of its headquarters located at 7 Roszel Road in Princeton, New Jersey by approximately 12,700 square feet and the extension of its lease term until at least 2020. With the expansion, MIAX now occupies a total of approximately 27,000 square feet of Class A space at its Princeton headquarters. This additional space is being utilized to house MIAX’s technology development center and recently completed, state-of-the-art National Operations Center (the “NOC”) for the MIAX Options Exchange, a fully-electronic options exchange planning to commence operations in late September 2012, subject to SEC approval.

“We are very excited to announce our Princeton office expansion and lease amendment,” said Thomas P. Gallagher, MIAX’s Executive Chairman. “This additional square footage has enabled us to expand our technology development operations and complete the build-out of our NOC. With our lease term now extended through 2020, we look forward to providing a significant number of employment opportunities and ancillary business to the State of New Jersey for many years to come.” Mr. Gallagher added, “Being headquartered in Princeton, New Jersey places us in close proximity to both Philadelphia and New York City and allows us direct access to the financial services industries, software developers and engineers that are located in these cities.”

With the completion of the office expansion and the NOC, MIAX will use the facility to centralize all command and control operations for the MIAX Options Exchange. The NOC supports 22 individual workstations and in excess of 100 display devices to allow staff to monitor and control the various systems hosted at five geographically diverse data centers. In addition, the Exchange’s customer service support team will also reside in the facility.

“The design of the NOC reflects the cumulative experience of the MIAX customer service and technology operational support teams that will occupy the facility, as it was specifically designed to improve the customer experience by providing an environment that promotes better communication between the various MIAX teams,” said Doug Schafer, Executive Vice President and Chief Information Officer at MIAX. “Through the use of an open space design and strategic placement of workstations and display devices, the NOC will facilitate information sharing amongst the various MIAX team members and timely non-verbal communication of important alerts, data, and system status.”

Currently, the MIAX executive offices, technology development center and NOC are all located in Princeton, New Jersey. Additional executive offices, as well as a multi-purpose training, meeting and conference center will be located in a state-of-the-art facility in Miami, Florida.

For further information regarding the MIAX Options Exchange including key milestone dates, member on-boarding and technology requirements please visit www.MIAXOptions.com or contact MIAX Trading Operations at TradingOperations@MIAXOptions.com.

About Miami International Securities Exchange, LLC

Miami International Securities Exchange, LLC (MIAX) is a wholly-owned subsidiary of Miami International Holdings, Inc. (MIH). MIAX has assembled a team with deep rooted experience in developing, operating and trading on options exchanges. The initial focus of MIH is to leverage management’s expertise and relationships in the equity options space to launch the MIAX Options Exchange. MIAX intends to launch the MIAX Equities Exchange once the MIAX Options Exchange is operational and plans to pursue Latin American equity listings. The launch of the MIAX Options Exchange and the MIAX Equities Exchange is subject to SEC approval. The vision for the MIAX Equities Exchange is to become a marketplace that enables access to the Latin American markets, a place where global Hispanic entrepreneurs can seek capital and growth opportunities, and an exchange where Latin American companies will want to be listed. MIAX believes that Miami is the ideal location for taking advantage of the rapidly developing business opportunities emanating from the Americas and that Latin American companies will be interested in listing on the MIAX because of its presence in Miami

The MIAX Futures Exchange is also planned as a follow-on initiative. The launch of the MIAX Futures Exchange is subject to CFTC approval.

Corporate Communications Contact:
Dominique Prunetti-Miller
609-897-1465
dprunetti@miami-holdings.com

Disclaimer and Cautionary Note Regarding Forward-Looking Statements
The press release shall not constitute an offer to sell or a solicitation of an offer to purchase any securities of MIH, and shall not constitute an offer, solicitation or sale in any state or jurisdiction in which such offer; solicitation or sale would be unlawful. This press release may contain forward-looking statements, including forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. Such forward-looking statements include, but are not limited to, statements concerning the plans, objectives, expectations and intentions and other statements that are not historical or current facts of MIH, together with its subsidiaries, including MIAX (the “Company”). Forward-looking statements include, but are not limited to, statements about the possible or assumed future results of operations of the Company; the competitive position of the Company; potential growth opportunities available to the Company; the expectation with respect to securities, options and future markets and general economic conditions; the effects of competition on the Company’s business; and the impact of future legislation and regulatory changes on the Company’s business. Forward-looking statements are based on the Company’s current expectations and involve risks and uncertainties that could cause actual results to differ materially from those expressed or implied in such forward-looking statements.