Miami International Securities Exchange Announces Mock Trading Testing

PRINCETON, New Jersey, Aug. 16, 2012 /PRNewswire/ -- Miami International Securities Exchange, LLC ("MIAX") announced today that in preparation for the launch of its Options Trading Platform, MIAX is planning industry mock trading testing on the following dates:

• Saturday 9/8/12 – 9:00 am – 1:00 pm ET
• Saturday 9/15/12 – 9:00 am – 1:00 pm ET
• Saturday 9/22/12 – 9:00 am – 1:00 pm ET

Additional dates will be added on an as-needed basis. The industry mock trading testing will support the following:

• Open firm participation via each of MIAX's technical interfaces:
  • MIAX Express Interface (MEI) for Market Maker quoting
  • FIX Order Interface (FOI) for orders
  • Top of Market (ToM) market data feed
  • Clearing Trade Drop (CTD) for trade drops
• MIAX --> OPRA Trade and Quote Reporting (NOTE: OPRA participation has been coordinated for all Mock Trading Sessions)
  • Data generated from the testing will utilize the new OPRA Participant ID code "M" which will be disseminated via OPRA's Production channels.
• MIAX --> Away Exchange Order Routing via participating exchanges and/or via simulation

To arrange participation in the mock trading tests, please contact MIAX Trading Operations at TradingOperations@MIAXOptions.com.

The MIAX executive offices and technology development center are located in Princeton, New Jersey. The National Operations Center for the MIAX Options Exchange will be housed at the Princeton facility. 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. The MIAX Options Exchange, which will be a fully-electronic options exchange, is planning to commence operations in October 2012, subject to SEC approval.

For further information regarding the MIAX Options Exchange, including key milestone dates, recent developments, member onboarding, and technology onboarding, including specifications and requirements, please visit www.MIAXOptions.com or contact MIAX Trading Operations at TradingOperations@MIAXOptions.com. For a copy of the Notice of Filing of the MIAX's Form 1 Application and the complete text of the MIAX Options Exchange's rule set, please visit the SEC's website at www.sec.gov.

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.

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.