Princeton, NJ – October 31, 2012 – MIAX Options Exchange ("MIAX") announced today that in preparation for the launch of its Options Trading Platform, MIAX is planning additional industry mock trading testing for November on the following dates:

• Saturday 11/10/12  9:00 a.m.  1:00 p.m. ET
• Saturday 11/17/12  9:00 a.m.  1:00 p.m. ET

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 commencement of the MIAX Options Exchange, which will be a fully-electronic options exchange, is 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. The launch of the MIAX Options Exchange is subject to SEC approval.

Corporate Communications Contact:
Oly Wirtz
609-897-1478
owirtz@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 Miami International Holdings, Inc. (“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.