Princeton, NJ – May 4, 2016 – MIAX Options Exchange today announced that over 22.2 million contracts were executed on MIAX Options in April 2016, equating to an average daily volume (ADV) of over 1.06 million contracts. The over 22.2 million contracts executed represents a 4.6% increase from the over 21.2 million contracts executed in March 2016 and a 1.8% increase from the approximately 21.9 million contracts executed in April 2015. Since its launch in December 2012, a total of over half a billion contracts have now been executed on MIAX Options.

MIAX Options’ year-to-date total as of April 2016 of over 82.3 million contracts represents a 10.3% increase over MIAX Options’ total volume of approximately 74.6 million contracts achieved during the same time period in 2015. MIAX Options’ April equity options market share of 7.41% represents a 1.6% increase from the 7.29% achieved in April 2015 and a 7.5% increase from the 6.89% achieved in March 2016. For the entire U.S. equity options industry, April’s ADV was over 14.31 million contracts, or a 0.1% increase from April 2015’s ADV of over 14.30 million contracts.

Other achievements include:

• During March 2016, MIAX Options ranked #1 out of all U.S. equity options exchanges in percentage of time at the National Best Bid/Offer (NBBO) in aggregate across all option classes. This marked the eighth month in a row that MIAX Options achieved this distinction.

• During March 2016, MIAX Options ranked #1 out of all U.S. equity options exchanges in percentage of time at the NBBO in aggregate across all Penny Pilot option classes. This marked the seventh month in a row that MIAX Options achieved this distinction. Statistics for both all option classes and Penny Pilot option classes were provided by the TABB Group.

For further information regarding the MIAX Options Exchange, please visit www.MIAXOptions.com or contact MIAX Trading Operations at TradingOperations@MIAXOptions.com.

Corporate Communications Contact:

Dominique Prunetti-Miller

(609) 897-1465

dprunetti@miami-holdings.com

About MIAX Options and MIH

MIAX Options is a fully electronic options trading exchange. MIAX Options has assembled a team with deep rooted experience in developing, operating and trading on options exchanges. Its trading platform has been developed in-house and designed from the ground up for the unique functional and performance demands of derivatives trading. MIAX Options now lists and trades options on over 2,400 multi-listed classes. MIAX Options’ unparalleled system throughput is approximately 38 million quotes per second. The average latency for a single quote on MIAX Options is approximately 16.21 microseconds for a full round trip. At the 99th percentile, the latency on MIAX Options is approximately 23.90 microseconds. At the 99.9th percentile, the latency on MIAX Options is approximately 53.71 microseconds. The executive offices and technology development center as well as the National Operations Center for the MIAX Options are located in Princeton, New Jersey.

MIAX Options, Miami International Technologies, LLC (MIAX Technologies), MIAX Global, LLC (MIAX Global) and MIAX PEARL, LLC (MIAX PEARL) are wholly-owned subsidiaries of Miami International Holdings, Inc. (MIH). MIAX Technologies is MIH’s technology subsidiary for the sale and/or license of MIAX trading technology. MIAX Global focuses on merger, acquisition and joint venture activities of MIH. MIAX Global also provides technology and other services outside of North America, with its initial concentration being on Europe and Latin America. MIAX PEARL will be MIH’s second fully electronic options trading exchange and will leverage MIAX’s industry leading technology and infrastructure to employ a price-time allocation model. MIAX PEARL is expected to launch in the fourth quarter of 2016, pending approval from the SEC.

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 Options (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; 3 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.